Revision as of 16:45, 18 March 2015

PolaChess

The PolaChess tournament is the ongoing PolaFlow chess tournament. It is a Round-robin, 15 minutes time, 0 increment tournament played during coffee time. Both a PolÆlO rating and centipawns are computed. The person in charge is Juan Pablo.

PolÆlO

An Elo is computed, with a $K=32$ constant and with 5 provisional ratings for players not part of the PolaChess pool (we assumed established ratings for everybody who joined the tournament at $t=0$, which is not a problem as their ratings will converge but we need to take into account occasional games as provided by visitors). Specifically, the $K$ factor is scaled by $3/\big(4(5-i)\big)$ (i.e., down) for the established player and by $3-(i-1)/2$ (i.e., up) for his opponent for the first $i<5$ games of the new player, after which point $K=32$ again. Explicitly, the $K$ constants for the new player go:

96, 80, 64, 48, and 32 thereafter

while it goes, for the established player:

6, 8, 12, 24, and 32 thereafter

Games

Carlos (1000) vs Camilo (1000)

13 February (2015)

[Event "Casual game"] [Site "http://lichess.org/5N56IGY7"] [Date "2015.02.13"] [White "Carlos Sanchez Munoz"] [Black "Camilo Lopez Carreno"] [Result "1-0"] [WhiteElo "1000"] [BlackElo "1000"] [PlyCount "55"] [Variant "Standard"] [TimeControl "10-0"] [ECO "B01"] [Opening "Scandinavian Defense, General"] [Annotator "lichess.org"] 1. e4 d5 { Scandinavian Defense, General } 2. Nc3?! { (0.55 > -0.20) Inaccuracy. The best move was exd5. } (2. exd5 Nf6 3. d4 Nxd5 4. c4 Nf6 5. Nf3 Bf5 6. Be2 e6) 2... e5?! { (-0.20 > 0.71) Inaccuracy. The best move was d4. } (2... d4 3. Nce2 c5 4. Ng3 Nc6 5. Bb5 Qa5 6. a4 Nf6 7. Nf3) 3. Nf3?! { (0.71 > -0.18) Inaccuracy. The best move was exd5. } (3. exd5 Nf6 4. Nf3 Nxd5 5. Nxe5 Nxc3 6. bxc3 Nd7 7. Qe2) 3... Bc5? { (-0.18 > 0.94) Mistake. The best move was d4. } (3... d4 4. Ne2 Nc6 5. c3 Nf6 6. d3 dxc3 7. Nxc3 Bg4 8. Be2 Bc5 9. O-O Bxf3 10. Bxf3 O-O 11. Be3 Nd4 12. Bxd4 Qxd4) 4. Bb5+? { (0.94 > -0.06) Mistake. The best move was exd5. } (4. exd5 Qe7 5. d3 Nf6 6. Be2 Nbd7 7. O-O O-O 8. d4 exd4 9. Nxd4 Nb6 10. Bg5 Rd8 11. Bxf6 Qxf6) 4... c6 5. Ba4 Na6? { (-0.36 > 1.18) Mistake. The best move was a5. } (5... a5 6. d4 exd4 7. Nxd4 dxe4 8. Be3 Bb4 9. O-O Nf6 10. f3 exf3 11. Qxf3 Bg4 12. Qf2 O-O 13. h3 Bd7) 6. d3?! { (1.18 > 0.31) Inaccuracy. The best move was exd5. } (6. exd5 Ne7 7. dxc6 O-O 8. O-O Nxc6 9. Bxc6 bxc6 10. Nxe5 f6 11. Nxc6 Qb6 12. Qf3) 6... Nf6 7. Bg5?! { (0.40 > -0.14) Inaccuracy. The best move was exd5. } (7. exd5 Nxd5 8. Nxd5 Qxd5 9. Bb3 Qd6 10. Ng5 Qf6 11. O-O O-O 12. Qh5 h6 13. Ne4 Qf5 14. Qh4 Be6 15. Be3 Bxb3 16. axb3) 7... h6? { (-0.14 > 0.89) Mistake. The best move was d4. } (7... d4 8. Ne2 h6 9. Bh4 Bg4 10. O-O Bxf3 11. gxf3 O-O 12. Bg3 Bd6 13. c3 dxc3 14. bxc3 Nc5) 8. Bh4? { (0.89 > -0.46) Mistake. The best move was Bxf6. } (8. Bxf6 Qxf6 9. exd5 Bf5 10. O-O O-O 11. Qe2 Bd4 12. dxc6 bxc6 13. Ne4 Bxe4 14. Qxe4 Nc5 15. Qxc6 Rac8 16. Qxf6 gxf6 17. Bb3 Nxb3) 8... g5?! { (-0.46 > 0.43) Inaccuracy. The best move was Qa5. } (8... Qa5 9. Bxf6 gxf6 10. exd5 Bb4 11. Bb3 Bxc3+ 12. bxc3 Qxc3+ 13. Nd2 cxd5 14. Bxd5 Nb4 15. Bb3 Bg4 16. f3 Be6 17. O-O Bxb3 18. axb3) 9. Bg3 g4?! { (0.67 > 1.62) Inaccuracy. The best move was d4. } (9... d4 10. Ne2 Bd6 11. c3 dxc3 12. bxc3 Nc5 13. Bc2 Qe7 14. d4 Ncxe4 15. dxe5 Nxg3 16. exd6 Qxe2+ 17. Qxe2+ Nxe2 18. Kxe2 Nd5) 10. Nxe5 dxe4 11. Nxc6 Qd7?? { (1.31 > 8.89) Blunder. The best move was bxc6. } (11... bxc6 12. Bxc6+ Bd7 13. Bxa8 Qxa8 14. O-O O-O 15. Qd2 e3 16. fxe3 Nd5 17. d4 Be7 18. e4 Bg5 19. Qe2 Nxc3 20. bxc3 Qc6 21. d5) 12. Nxa7? { (8.89 > 7.14) Mistake. The best move was Ne5. } (12. Ne5 Qxa4 13. Nxa4 Be6 14. dxe4 Rc8 15. Bh4 Be7 16. O-O Nb4 17. Nc3 Rc5 18. Bxf6 Bxf6 19. Qd6 Rxe5 20. Qxb4) 12... Rxa7? { (7.14 > 8.41) Mistake. The best move was Qxa4. } (12... Qxa4 13. Nxa4 Rxa7 14. Be5 Be7 15. Bd4 Ra8 16. Nb6 Rb8 17. Nd5 Nxd5 18. Bxh8 Be6 19. dxe4 Nf4 20. g3 Rd8 21. Qc1 Bb4+ 22. Bc3) 13. Bxd7+ Bxd7 14. Be5 Nd5? { (8.44 > 12.95) Mistake. The best move was Be7. } (14... Be7 15. Nxe4 Nxe4 16. Bxh8 Ng5 17. O-O Be6 18. Re1 Nc7 19. Bd4 Ra8 20. c4 Bb4 21. Bc3 Bxc3 22. bxc3 Kf8 23. Qb3) 15. Bxh8 Nf4 16. g3 Ng2+ 17. Kf1 e3 18. Kxg2 exf2 19. Qe2+ Kf8 20. Rhf1 Bc6+ 21. Ne4 Bd4 22. c3 Bb6 23. b4 f5 24. h3 h5 25. d4 Kg8 26. Qxf2 fxe4?! { (12.50 > Mate in 2) Checkmate is now unavoidable. The best move was Bxe4+. } (26... Bxe4+ 27. Kh2 Kxh8 28. Qd2 Bc7 29. Qh6+ Kg8 30. Qxh5 gxh3 31. b5 Kg7 32. Qg5+ Kh7 33. Kxh3 Nb4 34. cxb4 Ra8 35. Rxf5 Bxf5+ 36. Qxf5+) 27. Qf8+ Kh7 28. Qg7# { Black is checkmated } 1-0

Fabrice (1000) vs David (1000)

16 February (2015)

[Event "Casual game"] [Site "http://lichess.org/2PTJI0le"] [Date "2015.02.16"] [White "Fabrice"] [Black "David"] [Result "1-0"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "47"] [Variant "Standard"] [TimeControl "-"] [ECO "B00"] [Opening "Owen Defense, General"] [Annotator "lichess.org"] 1. e4 b6 { Owen Defense, General } 2. d4 Bb7 3. d5 Nf6 4. Nc3 c5? { (0.20 > 1.71) Mistake. The best move was e6. } (4... e6 5. a3 exd5 6. exd5 Bd6 7. Bc4 O-O 8. Nge2 c6 9. O-O Qc7 10. g3 cxd5) 5. Nf3?! { (1.71 > 0.89) Inaccuracy. The best move was e5. } (5. e5 Ng8 6. Nf3 a6 7. Ne4 f5 8. Ng3 g6 9. c4 Bg7 10. Bd3 Nh6 11. O-O O-O 12. Bf4 Nf7 13. b3) 5... h5? { (0.89 > 3.06) Mistake. The best move was e6. } (5... e6 6. Bf4 a6 7. Be2) 6. Bg5? { (3.06 > 1.54) Mistake. The best move was e5. } (6. e5 Ng4 7. e6 Qc7 8. exf7+ Kxf7 9. Bc4 Qd6 10. Nb5 Qf6 11. O-O Ne5 12. Nxe5+ Qxe5 13. Qf3+) 6... e6? { (1.54 > 3.96) Mistake. The best move was d6. } (6... d6 7. e5 dxe5 8. Bb5+ Nbd7 9. Nxe5 a6 10. Bc6 Bxc6 11. Nxc6 Qc7 12. O-O Ng4 13. g3 Nge5 14. Re1 Nxc6 15. dxc6 Qxc6) 7. e5 Bxd5? { (3.80 > 4.82) Mistake. The best move was a6. } (7... a6 8. a4 Be7 9. d6 Bf8 10. Be2 Nc6 11. O-O h4 12. h3 Nb4 13. Nxh4 Nbd5 14. Nxd5 Bxd5 15. Re1 a5 16. exf6 gxf6) 8. Nxd5 exd5 9. exf6 gxf6 10. Qxd5 Qe7+? { (4.87 > 7.00) Mistake. The best move was fxg5. } (10... fxg5 11. Bc4 Qe7+ 12. Kf1 Nc6 13. Re1 f6 14. Bb5 O-O-O 15. Rxe7 Bxe7 16. Bxc6 dxc6 17. Qxc6+ Kb8 18. g3 h4 19. Qe6 h3 20. a3) 11. Be3? { (7.00 > 4.30) Mistake. The best move was Kd2. } (11. Kd2 fxg5 12. Re1 Nc6 13. Rxe7+ Bxe7 14. Nxg5 Rh6 15. Nxf7 Rf6 16. Qxh5 Rxf2+ 17. Kc1 Rxf7 18. Bc4 O-O-O 19. Bxf7 Bd6 20. Bd5 Nd4) 11... Bh6?? { (4.30 > 9.63) Blunder. The best move was Nc6. } (11... Nc6 12. O-O-O Qe6 13. Bc4 Qxd5 14. Rxd5 Ne7 15. Rdd1 O-O-O 16. Bxf7 Nf5 17. Bf4) 12. Qxa8 Bxe3 13. Qxb8+ Qd8 14. Qxd8+ Kxd8 15. fxe3 Re8 16. Kf2 d5 17. Rd1 d4 18. Bc4 Ke7 19. Rhe1 Rg8 20. exd4+ Kf8 21. dxc5 f5?! { (19.63 > Mate in 8) Checkmate is now unavoidable. The best move was Rg4. } (21... Rg4 22. cxb6 axb6 23. Rd8+ Kg7 24. Nd4 b5 25. Bxb5 Kh6 26. Ree8 f5 27. Nxf5+ Kg5 28. Ne7 f5 29. Rg8+ Kf6 30. Nd5+ Kf7 31. Rxg4) 22. Nh4?! { (Mate in 8 > 26.96) Lost forced checkmate sequence. The best move was Rd7. } (22. Rd7 Kg7 23. Rxf7+ Kg6 24. Nh4+ Kg5 25. Rxf5+ Kh6 26. Re6+ Kh7 27. Re7+ Kh6 28. Bxg8 bxc5 29. Rh7#) 22... f4?! { (26.96 > Mate in 6) Checkmate is now unavoidable. The best move was Rg4. } (22... Rg4 23. Rd8+ Kg7 24. Nxf5+ Kh7 25. Bd3 Rf4+ 26. Ke3 Ra4 27. c6 Ra5 28. c7 Rc5 29. c8=Q Rxc8 30. Rxc8 b5 31. Bxb5 a5) 23. Nf5 h4 24. Rd8# { Black is checkmated } 1-0

Carlos (1016) vs Stefan (1000)

17 February (2015) (photo)

[Event "Casual game"] [Site "http://lichess.org/ij0BBhlk"] [Date "2015.02.17"] [White "Carlos"] [Black "Stefan"] [Result "1-0"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "37"] [Variant "Standard"] [TimeControl "-"] [ECO "C41"] [Opening "Philidor Defense, General"] [Annotator "lichess.org"] 1. e4 e5 2. Nf3 d6 { Philidor Defense, General } 3. Nc3 c6 4. Bc4 b5 5. Bb3 h6 6. a3?! { (0.85 > 0.23) Inaccuracy. The best move was Nxb5. } (6. Nxb5 Nf6 7. Nc3 Nbd7 8. O-O Be7 9. Re1 O-O 10. h3 Ba6 11. d3 Qa5 12. Bd2 Rab8) 6... Nf6 7. d4 Qa5? { (0.31 > 2.50) Mistake. The best move was Nbd7. } (7... Nbd7 8. Be3 Be7 9. dxe5 Nxe5 10. Nxe5 dxe5 11. Qxd8+ Bxd8 12. f3 Bb6 13. Bxb6 axb6) 8. Bd2? { (2.50 > 0.54) Mistake. The best move was dxe5. } (8. dxe5 b4 9. exf6 bxc3 10. O-O Nd7 11. Qd4 Nxf6 12. e5 dxe5 13. Nxe5 Be6 14. Bxe6 fxe6 15. Re1 Rd8) 8... b4? { (0.54 > 2.65) Mistake. The best move was Qc7. } (8... Qc7 9. Be3 Be7 10. O-O Nbd7) 9. axb4 Qxb4?! { (2.48 > 3.32) Inaccuracy. The best move was Qc7. } (9... Qc7 10. b5 Bb7 11. bxc6 Nxc6 12. Ba4 exd4 13. Nxd4 Qb6 14. Be3 Qxb2 15. Ncb5 Rc8) 10. Nd5? { (3.32 > 1.71) Mistake. The best move was dxe5. } (10. dxe5 Nfd7 11. e6 fxe6 12. Bxe6 Nb6 13. Bxc8 Nxc8 14. O-O Be7 15. Nh4 Bxh4) 10... Qb7 11. Nb4? { (1.67 > 0.11) Mistake. The best move was Nxf6+. } (11. Nxf6+ gxf6 12. O-O Be6 13. c4 Na6 14. d5 Bd7 15. Bc2 cxd5 16. exd5 Rb8 17. b3 Bg7 18. h3) 11... c5? { (0.11 > 1.77) Mistake. The best move was Nxe4. } (11... Nxe4 12. dxe5 d5 13. Nd3 Nd7 14. Nd4 Ndc5 15. Ba5 Nxd3+ 16. Qxd3 Nc5 17. Qc3 Be7 18. O-O O-O 19. Ra3 Bd7 20. f3 Rab8 21. f4) 12. Nd5?! { (1.77 > 0.95) Inaccuracy. The best move was dxe5. } (12. dxe5 Qxe4+ 13. Qe2 Qxe2+ 14. Kxe2 cxb4 15. exf6 Nc6 16. Bd5 Bb7 17. Rhe1 Kd7 18. Bxb4 Nd4+ 19. Nxd4 Bxd5 20. f3 gxf6 21. Ra5 Bb7) 12... Nxe4? { (0.95 > 3.90) Mistake. The best move was cxd4. } (12... cxd4 13. Nxf6+ gxf6 14. Bd5 Nc6 15. c3 dxc3 16. Bxc3 Be6 17. Qa4 Rc8 18. Rc1 Qd7 19. Bxe5 Bxd5 20. exd5 dxe5 21. dxc6 Qc7 22. O-O) 13. dxe5? { (3.90 > 1.93) Mistake. The best move was Ba5. } (13. Ba5 Na6 14. dxe5 Be7 15. Qe2 Bf5 16. Qxa6 Qxa6 17. Nc7+ Kf8 18. Nxa6 Ng5 19. Bc7 Nxf3+ 20. gxf3 dxe5 21. Bxe5 c4 22. Bxc4 Bxc2) 13... dxe5?! { (1.93 > 2.68) Inaccuracy. The best move was Nxd2. } (13... Nxd2 14. Qxd2 Be6 15. exd6 Bxd6 16. O-O Nd7 17. Nf6+ gxf6 18. Qxd6 Bxb3 19. cxb3 O-O-O 20. Nd4 Qb6 21. Qc6+ Qxc6 22. Nxc6 Rdf8 23. Rxa7) 14. Nxe5 Be6? { (2.76 > 3.92) Mistake. The best move was Bd6. } (14... Bd6 15. Qe2 Bf5 16. Nf6+ Ke7 17. Nxe4 Qxe4 18. Qxe4 Bxe4 19. Nxf7 Re8 20. Nxd6 Kxd6 21. Bf4+ Ke7 22. O-O-O Nc6) 15. Ba4+ Bd7 16. Ba5 Na6?? { (4.00 > Mate in 9) Checkmate is now unavoidable. The best move was Bd6. } (16... Bd6 17. Nxd7 Nxd7 18. Nc7+ Ke7 19. Nxa8 Rxa8 20. O-O Ndf6 21. f3 Ng5 22. Re1+ Ne6 23. Bc3 Rd8) 17. Qf3?! { (Mate in 9 > 11.81) Lost forced checkmate sequence. The best move was Nc7+. } (17. Nc7+ Qxc7 18. Bxd7+ Ke7 19. Bxc7 Nb4 20. Ba4 Nd3+ 21. Qxd3 Rd8 22. Bxd8+ Ke6 23. Qxe4 f5 24. Bd7+ Kd6 25. Rd1#) 17... f5?! { (11.81 > Mate in 2) Checkmate is now unavoidable. The best move was Qxd5. } (17... Qxd5 18. Bxd7+ Ke7 19. Qf5 Nb4 20. Bxb4 Nf6 21. Bc6 Qe6 22. Bxc5+ Kd8 23. Qxe6 fxe6 24. Bxf8 Rxf8 25. Bxa8 Kc7 26. Rxa7+ Kb6 27. Ra3) 18. Qh5+ g6 19. Qxg6# { Black is checkmated } 1-0

Pablo (1000) vs Fabrice (1016)

18 February (2015)

[Event "Casual game"] [Site "http://lichess.org/sbbMcWWP"] [Date "2015.02.18"] [White "Pablo"] [Black "Fabrice"] [Result "0-1"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "62"] [Variant "Standard"] [TimeControl "-"] [ECO "B00"] [Opening "Nimzowitsch Defense, French Connection"] [Annotator "lichess.org"] 1. e4 Nc6 2. Nc3 e6 { Nimzowitsch Defense, French Connection } 3. Bb5 a6 4. Ba4 d5 5. Nf3 d4 6. Nb1?! { (0.32 > -0.28) Inaccuracy. The best move was Bxc6+. } (6. Bxc6+ bxc6 7. Ne2 c5 8. d3 Ne7 9. c3 Nc6 10. O-O dxc3 11. bxc3 Be7 12. Bf4 O-O 13. Rb1 f6 14. e5 Bd7 15. exf6 Bxf6) 6... Bd7 7. d3 Bb4+ 8. c3 dxc3 9. Nxc3 Qf6?! { (0.37 > 1.25) Inaccuracy. The best move was Nf6. } (9... Nf6 10. a3 Bd6 11. d4 b5 12. Bb3 e5 13. dxe5 Nxe5 14. Bf4 Nxf3+ 15. Qxf3 Bg4 16. Qg3 Bxf4 17. Qxf4 O-O 18. f3) 10. Be3? { (1.25 > -0.17) Mistake. The best move was d4. } (10. d4 Qd8 11. O-O Nf6 12. Bc2 Ne7 13. a3 Bxc3 14. bxc3) 10... O-O-O? { (-0.17 > 1.06) Mistake. The best move was Bxc3+. } (10... Bxc3+ 11. bxc3 Qxc3+ 12. Ke2 Nge7 13. Qb3 Qxb3 14. Bxb3 O-O 15. Bf4 Rac8 16. Rhc1 h6 17. Rab1 Rfd8 18. a4 Kh7 19. h3 Ng6 20. Bd2) 11. O-O Ne5 12. Qb3? { (0.98 > -0.92) Mistake. The best move was Nxe5. } (12. Nxe5 Qxe5 13. Bb3 Bc6 14. d4 Bxc3 15. dxe5 Rxd1 16. Raxd1 Bxb2 17. Bd4 Bxd4 18. Rxd4 Ne7 19. f4 Rd8 20. Rxd8+ Kxd8 21. f5 Bxe4) 12... Nxf3+ 13. Kh1? { (-0.87 > -3.58) Mistake. The best move was gxf3. } (13. gxf3 Bd6 14. f4 Bxf4 15. Rac1 b5 16. Bxb5 axb5 17. Nxb5 Qg5+ 18. Kh1 Bxb5 19. Bxf4 Qxf4 20. Qxb5 Ne7 21. f3 Rd4 22. a4 Kd8) 13... Nxh2? { (-3.58 > -1.87) Mistake. The best move was Bd6. } (13... Bd6 14. Bxd7+ Rxd7 15. h3 Ne7 16. Qd1 Nd4 17. f4 Bc5 18. Na4 Ba7 19. a3 Kb8 20. Rc1 Nec6 21. b4 Qg6 22. Nc3 f5 23. Rf2) 14. Kxh2 Bd6+ 15. g3 Qh4+? { (-2.08 > -0.12) Mistake. The best move was Bxa4. } (15... Bxa4 16. Nxa4 h5 17. Kg2 h4 18. Rh1 Ne7 19. Qc3 Be5 20. d4 Bxd4 21. Bxd4 Qxd4) 16. Kg2 Qf6 17. Rh1 e5? { (-0.08 > 1.20) Mistake. The best move was Bxa4. } (17... Bxa4 18. Nxa4 Nh6 19. f3 Qe5 20. Bf2 b5 21. Nc3 Bc5 22. Ne2 Bxf2 23. Kxf2 f5) 18. Nd5? { (1.20 > -0.31) Mistake. The best move was Bxd7+. } (18. Bxd7+ Rxd7 19. Nd5 Qe6 20. Rac1 Kb8 21. Rc6 Kc8 22. Rhc1 Ne7 23. Rxd6 Qxd6 24. Nb6+ Kb8 25. Nxd7+ Qxd7 26. Qxf7 Rd8 27. Qxg7 Nc6) 18... Bxa4 19. Qxa4 Qe6 20. Qa5?! { (0.00 > -0.64) Inaccuracy. The best move was b4. } (20. b4 Ne7 21. Nc3 c6 22. Rhc1 Kb8 23. b5 cxb5 24. Nxb5 Nd5 25. Ba7+ Ka8 26. Bc5 Bxc5 27. Rxc5 Nf4+ 28. gxf4 Qg4+ 29. Kf1 Qh3+) 20... Nf6?! { (-0.64 > 0.32) Inaccuracy. The best move was Ne7. } (20... Ne7 21. Rac1 Nxd5 22. exd5 Qd7 23. Rc6 Rdg8 24. Rc3 Qb5 25. Qxb5 axb5 26. Bc5 Kd7 27. Bxd6 Kxd6 28. Rhc1 Rc8 29. Rc5 c6 30. dxc6) 21. Rac1? { (0.32 > -0.75) Mistake. The best move was Bg5. } (21. Bg5 Nxd5 22. exd5 Qd7 23. Bxd8 Qxd8 24. Rac1 Kb8 25. Rh5 Qg8 26. Qa4 g6 27. Rhh1 f5 28. Qc4 Qf7 29. a3 h5 30. Qb3 Ka7) 21... Nxd5 22. exd5 Qd7 23. Rh5? { (-0.55 > -1.56) Mistake. The best move was Rc6. } (23. Rc6 Rde8 24. Rc3 Qb5 25. Qxb5 axb5 26. Rb3 b4 27. Bd2 Rd8 28. Rh4 h5 29. Bxb4 Bxb4 30. Rhxb4 b6 31. Rc3 Kb7) 23... f5 24. Ba7 f4 25. Qxc7+?? { (-1.78 > -11.82) Blunder. The best move was Qe1. } (25. Qe1 Qf7 26. Rh3 Qxd5+ 27. Qe4 Qxe4+ 28. dxe4 fxg3 29. Rxg3 g6 30. Be3 Rhf8 31. Rh3 Rf7 32. a3 Be7 33. Rch1) 25... Bxc7 26. Rhh1 Qxd5+ 27. Kh2 e4 28. Rc4 Rd6 29. a4?! { (-18.12 > Mate in 10) Checkmate is now unavoidable. The best move was Rhc1. } (29. Rhc1 fxg3+ 30. fxg3 Rc6 31. Rxc6 bxc6 32. d4) 29... Rh6+ 30. Kg2 exd3+ 31. Kg1 Qxh1# { White is checkmated } 0-1

Santiago (1000) vs Carlos (1031)

[Event "Casual game"] [Site "http://lichess.org/xwfAqw6C"] [Date "2015.02.19"] [White "Carlos"] [Black "Santiago"] [Result "1-0"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "25"] [Variant "Standard"] [TimeControl "-"] [ECO "C40"] [Opening "King Pawn Game, Damiano Defense"] [Annotator "lichess.org"] 1. e4 e5 2. Nf3 f6?! { King Pawn Game, Damiano Defense (0.24 > 1.13) Inaccuracy. The best move was Nc6. } (2... Nc6 3. Bb5 Nf6 4. O-O Nxe4) 3. Nc3 Bc5 4. Bb5?! { (1.00 > 0.43) Inaccuracy. The best move was d4. } (4. d4 exd4 5. Nxd4 Bxd4 6. Qxd4 Ne7 7. Bc4) 4... Nc6 5. d3 Nb4?! { (0.13 > 0.84) Inaccuracy. The best move was Nge7. } (5... Nge7 6. a3 O-O 7. O-O d6 8. Bc4+ Kh8 9. b4 Bb6 10. Bb2 Bg4 11. h3 Bh5 12. Nd5 Nd4 13. Bxd4 Bxd4 14. c3 Bxf3 15. Qxf3) 6. a3 c6? { (0.92 > 3.23) Mistake. The best move was Nc6. } (6... Nc6 7. Bc4 Nge7 8. b4 Bb6 9. O-O d6 10. Be3 Bxe3 11. fxe3 h5 12. d4 exd4 13. exd4 Bg4 14. b5 Na5 15. Be2 O-O 16. Nd2) 7. Ba4? { (3.23 > 1.60) Mistake. The best move was axb4. } (7. axb4 Bxb4 8. Ba4 Ne7 9. O-O O-O 10. d4 d6 11. Bb3+ Kh8 12. Be3 Bg4 13. h3 Bxc3 14. bxc3 Bxf3 15. Qxf3 d5 16. dxe5 fxe5) 7... b5? { (1.60 > 3.48) Mistake. The best move was Na6. } (7... Na6 8. b4 Be7 9. d4 d6 10. O-O Nc7 11. Be3 a5 12. b5 cxb5 13. Nxb5 Bd7 14. Qd3 Nxb5 15. Bxb5 Nh6 16. Rfb1) 8. Bb3?! { (3.48 > 2.85) Inaccuracy. The best move was axb4. } (8. axb4 Bxb4 9. Bb3 d5 10. O-O Ne7 11. exd5 Bxc3 12. d6 Qxd6 13. bxc3 a5 14. d4 a4 15. Ba3 Qd7 16. Ba2 Nd5 17. dxe5 Nxc3) 8... Nh6? { (2.85 > 5.55) Mistake. The best move was Na6. } (8... Na6 9. Nxe5 fxe5 10. Qh5+ Ke7 11. Qg5+ Nf6 12. Qxg7+ Kd6 13. Bg5 Qf8 14. Bxf6 Qxg7 15. Bxg7 Rd8 16. Rf1 Bb7 17. f4 exf4) 9. d4? { (5.55 > 3.58) Mistake. The best move was axb4. } (9. axb4 Bxb4 10. Bxh6 gxh6 11. Nxe5 Qe7 12. Qh5+ Kf8 13. Nf3 Qg7 14. O-O a5 15. Rfe1 Qg6 16. Qh4 d6 17. e5 d5 18. Nd4 Rg8) 9... exd4?! { (3.58 > 4.28) Inaccuracy. The best move was Nxc2+. } (9... Nxc2+ 10. Bxc2 exd4 11. Nxd4 Nf7 12. O-O O-O 13. b4 Bb6 14. Bb3 Kh8 15. Nf5) 10. Nxd4? { (4.28 > 2.15) Mistake. The best move was axb4. } (10. axb4 Bxb4 11. Nxd4 Nf7 12. Nxb5 Bb7 13. Nd4 O-O 14. O-O Kh8 15. Re1 g6 16. Be3 Qe7 17. f3 Rfe8 18. Bf4 Ne5 19. Qd2) 10... d6?? { (2.15 > 6.21) Blunder. The best move was Bxd4. } (10... Bxd4 11. Qxd4 Na6 12. Nxb5 Qa5+ 13. Nc3 Qe5 14. Qxe5+ fxe5 15. Ba2 Nc7 16. Be3 Ne6 17. h3 Nf7 18. O-O-O Ba6 19. Bxe6 dxe6 20. Bc5) 11. Bxh6 gxh6 12. Qh5+? { (6.37 > 5.01) Mistake. The best move was axb4. } (12. axb4 Bxd4 13. Qxd4 a6 14. O-O Rf8 15. Rfd1 Bb7 16. Be6 Qe7 17. Qxd6) 12... Kf8?? { (5.01 > Mate in 1) Checkmate is now unavoidable. The best move was Kd7. } (12... Kd7 13. O-O-O Kc7 14. axb4 Bxd4 15. Rxd4 Qe7 16. Rhd1 Rd8 17. Kb1 Be6 18. Bxe6 Qxe6 19. f3 Rd7 20. Qxh6 Rg8 21. Qd2 Rdd8 22. g4) 13. Qf7# { Black is checkmated } 1-0

Camilo (984) vs Stefan (985)

[Event "Casual game"] [Site "http://lichess.org/W4I7zKh1"] [Date "2015.02.20"] [White "Camilo"] [Black "Stefan"] [Result "0-1"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "62"] [Variant "Standard"] [TimeControl "-"] [ECO "C41"] [Opening "Philidor Defense, General"] [Annotator "lichess.org"] 1. e4 e5 2. Nf3 d6 { Philidor Defense, General } 3. Nc3 a6 4. b4 b5?! { (0.10 > 0.97) Inaccuracy. The best move was Nc6. } (4... Nc6 5. b5 axb5 6. Bxb5 Nf6 7. d4 exd4 8. Nxd4 Bd7 9. O-O Be7 10. Nf5 O-O 11. Rb1 Bxf5 12. exf5 d5 13. Be3 Re8 14. Re1) 5. d3?! { (0.97 > 0.11) Inaccuracy. The best move was a4. } (5. a4 bxa4 6. Rxa4 Nd7 7. d4 Ngf6) 5... Nc6 6. Bg5 f6 7. Bh4 Nxb4 8. a3 Nc6 9. Nd5 Bg4 10. Be2 Bxf3?! { (-0.39 > 0.13) Inaccuracy. The best move was Nge7. } (10... Nge7 11. h3 Bd7 12. c4 bxc4 13. dxc4 Ng6 14. Bg3 Be7 15. Rb1 O-O 16. O-O Qc8 17. Nxe7+ Ngxe7 18. Qc2 Be6 19. Rfd1 Kh8 20. Qc3) 11. gxf3? { (0.13 > -0.94) Mistake. The best move was Bxf3. } (11. Bxf3 Nd4 12. Bh5+ g6 13. c3 c6 14. cxd4 cxd5 15. O-O Bg7 16. Bg4 h5 17. Be6 g5 18. Bxg8 Rxg8 19. Qxh5+ Kf8 20. Bg3 Rh8) 11... Nd4 12. c4?! { (-1.07 > -1.87) Inaccuracy. The best move was c3. } (12. c3 Nxe2 13. Kxe2 c6 14. Ne3 h5 15. h3 g5 16. Bg3 h4 17. Bh2 Ne7 18. a4 Bg7 19. axb5 axb5 20. Rxa8 Qxa8 21. Qb3) 12... c6 13. Nc3? { (-1.60 > -3.00) Mistake. The best move was Nb4. } (13. Nb4 Ne7 14. Bg3 c5 15. Nc2 Nec6 16. Nxd4 Nxd4 17. f4 Qa5+ 18. Kf1 Be7 19. Kg2 Qc3 20. f5 O-O 21. Rf1 bxc4 22. dxc4 Qb2) 13... Be7?! { (-3.00 > -2.02) Inaccuracy. The best move was Qa5. } (13... Qa5 14. Qc1 Nb3 15. Qb2 Nxa1) 14. a4? { (-2.02 > -3.18) Mistake. The best move was f4. } (14. f4 Qa5 15. Rc1 Qxa3 16. Nb1 Qb4+ 17. Nd2 g5 18. fxg5 fxg5 19. Bg3 Nf6 20. O-O O-O 21. Nf3 Nxe2+ 22. Qxe2 g4) 14... Qa5 15. Rc1 bxa4? { (-2.97 > -1.77) Mistake. The best move was f5. } (15... f5 16. Bxe7 Nxe7 17. exf5 Nexf5 18. f4 b4 19. Ne4 exf4 20. O-O O-O 21. Rb1 Rab8 22. Nd2 Qd8 23. Bg4 Qg5 24. Ne4 Qg6 25. Kh1) 16. f4? { (-1.77 > -3.00) Mistake. The best move was Qxa4. } (16. Qxa4 Qxa4 17. Nxa4 f5 18. Bxe7 Nxe7 19. c5 d5 20. Rb1 Kf7 21. Kd2 Ra7 22. Nb6 Rd8 23. Rhg1 a5 24. exd5 Nxd5 25. Nxd5) 16... Nb3 17. O-O Nxc1 18. Bg4?? { (-2.83 > -7.57) Blunder. The best move was Qxc1. } (18. Qxc1 exf4 19. f3 a3 20. Be1 Qb6+ 21. Rf2 Qb2 22. Qd1 a2) 18... Qxc3 19. Bh3? { (-7.70 > -11.31) Mistake. The best move was Qxc1. } (19. Qxc1 Qxc1 20. Rxc1 exf4 21. Bd1 a3 22. d4 g5 23. Ba4 Rc8 24. Ra1 gxh4 25. d5 Nh6 26. Bxc6+ Kf7 27. Rxa3 Rhg8+ 28. Kf1 Ng4) 19... Nxd3 20. Qg4 Kf8 21. Qd7 Qxc4 22. Be6 Qxe4 23. Rb1 Qg6+ 24. Kf1 Nc5 25. Qc7 Qxb1+ 26. Kg2 Qg6+ 27. Kf3?! { (-28.89 > Mate in 8) Checkmate is now unavoidable. The best move was Bg3. } (27. Bg3 Nxe6 28. Qb7 Nxf4+ 29. Kg1 Kf7 30. h3 Ne2+ 31. Kh2 Nxg3 32. Qxc6 Qe4 33. Qc1 Ne2 34. Qf1 d5 35. Qe1 Bb4 36. Qf1 Bc5) 27... Nxe6?! { (Mate in 8 > -72.52) Lost forced checkmate sequence. The best move was Qe4+. } (27... Qe4+ 28. Kg3 exf4+ 29. Kh3 Nxe6 30. Qxc6 Qxc6 31. Bg3 Ng5+ 32. Kh4 Qg2 33. Kg4 h5+ 34. Kxf4 Qf3#) 28. Qb7?! { (-72.52 > Mate in 3) Checkmate is now unavoidable. The best move was Bg3. } (28. Bg3 Nxc7 29. Kg2 exf4 30. Kg1 fxg3 31. fxg3 Qb1+ 32. Kg2 a3 33. g4 a2 34. Kh3 Qf1+ 35. Kg3 a1=Q) 28... e4+?! { (Mate in 3 > -28.28) Lost forced checkmate sequence. The best move was Qd3+. } (28... Qd3+ 29. Kg2 Nxf4+ 30. Kg1 Qd1#) 29. Ke3 Qe8 30. Kxe4 Nc5+ 31. Kd4 Nxb7 { White resigns } 0-1

David (984) vs Carlos (1046)

23 February (2015) — Blunderful.

[Event "Casual game"] [Site "http://lichess.org/TiWpnFAh"] [Date "2015.02.23"] [White "David"] [Black "Carlos"] [Result "1-0"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "31"] [Variant "Standard"] [TimeControl "-"] [ECO "C47"] [Opening "Four Knights Game, Scotch Variation"] [Annotator "lichess.org"] 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 { Four Knights Game, Scotch Variation } d6 5. Bb5 Bd7 6. Ng5? { (0.43 > -0.60) Mistake. The best move was d5. } (6. d5 Nb8 7. Bc4 Be7 8. O-O O-O 9. a3 c6 10. Nxe5) 6... Nxd4 7. Qh5?? { (-0.60 > -11.24) Blunder. The best move was Bc4. } (7. Bc4 Ne6 8. Nxe6 Bxe6 9. Bxe6 fxe6 10. O-O Be7 11. Qd3 O-O 12. Rd1 c6 13. Qh3 Qd7 14. Qg3 Rad8 15. Be3 Nh5 16. Qg4 Nf4) 7... g6?? { (-11.24 > -1.15) Blunder. The best move was Nxh5. } (7... Nxh5 8. Bc4 Ne6 9. Nxe6 fxe6 10. Be3 Be7 11. O-O O-O 12. Rad1 Bg5 13. Bxg5 Qxg5 14. a4 Nf6 15. a5 b6 16. a6 h6 17. g3) 8. Qh4?? { (-1.15 > -6.31) Blunder. The best move was Bxd7+. } (8. Bxd7+ Qxd7 9. Qd1 Qg4 10. Nd5 Qxd1+ 11. Kxd1 Nxd5 12. exd5 Nf5 13. Bd2 h6 14. Ne4 Be7 15. c3 Kd7 16. Ke2 h5 17. f3 Nh4) 8... Nxc2+ 9. Kd1 Nxa1 10. Nd5?? { (-5.99 > -10.79) Blunder. The best move was Bc4. } (10. Bc4 d5 11. exd5 Bg7 12. Nf3 Bf5 13. Re1 Nd7 14. Ne4 Qxh4 15. Nxh4 Bxe4 16. Rxe4 O-O-O 17. Bg5) 10... Nxe4?? { (-10.79 > -4.60) Blunder. The best move was Bxb5. } (10... Bxb5 11. Nxf7 Kxf7 12. Bg5 Be7 13. Bxf6 Bxf6 14. Qxf6+ Qxf6 15. Nxf6 Kxf6 16. Kd2) 11. Qxe4? { (-4.60 > -5.67) Mistake. The best move was Bxd7+. } (11. Bxd7+ Qxd7 12. Nxe4 Qa4+ 13. b3 Qxa2 14. Nef6+ Kd8 15. Ne4+ Kc8 16. Nd2 Qc2+ 17. Ke2 Qc6 18. Qf6 Nxb3 19. Nxb3 Qxd5 20. Qxh8 Qc4+) 11... Bxb5 12. Qb4? { (-5.29 > -8.07) Mistake. The best move was Qf3. } (12. Qf3 f5 13. Ne6 Qh4 14. Bf4 Bc6 15. Nexc7+ Kf7 16. Nxa8 Qxf4 17. Qxf4 exf4 18. Nac7 Bg7 19. Re1 Be5 20. Kd2 Bxb2) 12... c6? { (-8.07 > -6.62) Mistake. The best move was Bc6. } (12... Bc6 13. Qc4 h6 14. Nf3 Bg7 15. b3 Qd7 16. Bb2 b5 17. Qd3 O-O 18. Bxa1 e4 19. Qxe4 Bxd5 20. Qxd5 Bxa1 21. Qd3 Qg4 22. Re1) 13. Qe4?? { (-6.62 > -12.62) Blunder. The best move was Ne4. } (13. Ne4 f6 14. Ndxf6+ Kf7 15. Qc3 h6 16. Ng4 Qc8 17. f3 h5 18. Nh6+ Kg7 19. b3 Qe6) 13... cxd5 14. Qxd5 Ba4+ 15. b3 Nxb3?? { (-11.51 > Mate in 1) Checkmate is now unavoidable. The best move was Qc7. } (15... Qc7 16. bxa4 Qc2+ 17. Ke1 Qxc1+ 18. Ke2 Qxg5) 16. Qxf7# { Black is checkmated } 1-0

Stefan (1001) vs Pablo (985)

[Event "Casual game"] [Site "http://lichess.org/x6EBJ9Vy"] [Date "2015.02.24"] [White "Stefan"] [Black "Pablo"] [Result "1-0"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "57"] [Variant "Standard"] [TimeControl "-"] [ECO "D00"] [Opening "Queen Pawn Game, Veresov Attack"] [Annotator "lichess.org"] 1. d4 d5 2. Nc3 { Queen Pawn Game, Veresov Attack } Nf6 3. e3 Nc6 4. Bb5 a6 5. Bxc6+ bxc6 6. h3 Ne4?! { (-0.29 > 0.26) Inaccuracy. The best move was e6. } (6... e6 7. Nf3 c5 8. O-O cxd4 9. exd4 Bd6 10. Ne2 O-O 11. Bf4 Rb8 12. b3 Bb7 13. Ne5 c5 14. dxc5) 7. Nxe4 dxe4 8. c3 e6 9. Ne2 Be7 10. O-O O-O 11. Ng3 Bg5?! { (0.11 > 1.10) Inaccuracy. The best move was f5. } (11... f5 12. b3 Bb7 13. Bb2 c5 14. Ba3 cxd4 15. Bxe7 Qxe7 16. cxd4 c5 17. dxc5 Qxc5 18. Qd7 Qc8 19. Rfd1 Rd8 20. Qa4 a5 21. Rxd8+) 12. Nxe4 Qd5 13. f3 f5? { (1.24 > 2.59) Mistake. The best move was Be7. } (13... Be7 14. b3 Bb7 15. c4 Qf5 16. Bb2 c5 17. Nxc5 Bxc5 18. dxc5 Qxc5 19. Qd4 Qxd4 20. Bxd4 f6 21. Rad1 Rfd8 22. Kf2 Kf7 23. Bc3) 14. Nxg5 h6 15. Nxe6?! { (2.64 > 1.89) Inaccuracy. The best move was e4. } (15. e4 Qd8 16. h4 hxg5 17. Bxg5 Qd7 18. Re1 fxe4 19. Rxe4 Qd6 20. b3 Bd7 21. c4 Rf5 22. Qe2 c5 23. Rd1 Rb8 24. dxc5 Qxc5+) 15... Qxe6 16. Bd2 a5 17. f4?! { (1.72 > 0.93) Inaccuracy. The best move was b3. } (17. b3 Qd6 18. Qc1 c5 19. Qa3 a4 20. c4 f4 21. Qxc5 Qxc5 22. dxc5 Rd8 23. Rad1 Rd3 24. exf4 axb3 25. axb3 Rxb3) 17... Rb8?! { (0.93 > 1.76) Inaccuracy. The best move was Ba6. } (17... Ba6 18. Re1 c5 19. b3 c4 20. Qf3) 18. b3 Ba6 19. c4 Qe4 20. Bxa5 Rfe8? { (2.24 > 3.85) Mistake. The best move was Qxe3+. } (20... Qxe3+ 21. Kh2 Rbd8 22. Bxc7 Rxd4 23. Qh5 Qe8 24. Qf3 Bb7 25. Rad1 Rxd1 26. Rxd1 Qf7 27. Bd6 Rc8 28. a4 c5 29. Qf2 Qd7) 21. Bd2? { (3.85 > 2.60) Mistake. The best move was Bxc7. } (21. Bxc7 Rb7 22. Be5 Qxe3+ 23. Kh2 Rf7 24. Rf3 Qe4 25. Qd2 c5 26. Re1 Qa8 27. d5 Qd8 28. Rfe3 Ree7 29. Kg1 Bb7 30. a4 Rd7) 21... g5? { (2.60 > 4.33) Mistake. The best move was Qd3. } (21... Qd3 22. Re1 Ra8 23. Qe2 Qxe2 24. Rxe2 Bb7 25. a4 c5 26. dxc5 Red8 27. Bc3 Rd3 28. Rc1) 22. Qh5 gxf4?? { (4.20 > 11.72) Blunder. The best move was Re7. } (22... Re7 23. fxg5 hxg5 24. Qg6+ Rg7 25. Qxf5 Re8 26. Qc5 Qg6 27. a4 Qd6 28. Rf5 g4 29. h4 Bc8 30. Rg5 g3 31. Rf1 Qxc5 32. Rxc5) 23. Rxf4?? { (11.72 > 6.34) Blunder. The best move was Qg6+. } (23. Qg6+ Kf8 24. Rxf4 Qe6 25. Rxf5+ Ke7 26. Re5 Bc8 27. Qxh6 Rb7) 23... Qc2?? { (6.34 > 16.05) Blunder. The best move was Qe7. } (23... Qe7 24. Rxf5 Rf8 25. Ra5 Bc8 26. Qxh6 Rf5 27. Rxf5 Bxf5 28. Rf1 Bh7 29. Rf4 Kh8 30. Bc3 Qxe3+ 31. Kh2 Qxc3) 24. Qg6+ Kf8 25. Rxf5+ Ke7?! { (15.87 > Mate in 5) Checkmate is now unavoidable. The best move was Qxf5. } (25... Qxf5 26. Qxf5+ Kg7 27. Qd7+ Kh8 28. Qxc6 Kg7 29. Qxa6 Rb6 30. Qa4 Re7 31. Rf1 Rf6 32. Rxf6 Kxf6 33. Qc6+ Kg7 34. e4 h5 35. e5) 26. Re5+?! { (Mate in 5 > 18.98) Lost forced checkmate sequence. The best move was Rf7+. } (26. Rf7+ Kd8 27. Qxc6 Qb1+ 28. Rxb1 Re7 29. Rf8+ Re8 30. Rxe8#) 26... Kd8?! { (18.98 > Mate in 1) Checkmate is now unavoidable. The best move was Kd7. } (26... Kd7 27. Qxc2 Rxe5 28. dxe5 Kc8 29. Qg6 Kb7 30. Rf1 Rc8 31. Ba5 h5 32. Qxh5 Rg8 33. e6 Rg3 34. Rf7 Rg8 35. Rxc7+ Ka8 36. e7) 27. Qxc2?! { (Mate in 1 > 17.51) Lost forced checkmate sequence. The best move was Qxe8#. } (27. Qxe8#) 27... Kd7?! { (17.51 > Mate in 7) Checkmate is now unavoidable. The best move was Rxe5. } (27... Rxe5 28. dxe5 Kc8 29. Qh7 Kb7 30. Ba5 Rc8 31. Qxh6 Kb8 32. Qxc6 Bb7 33. Bxc7+ Rxc7 34. Qd6 Be4 35. e6 Kb7) 28. Qf5+ Kd6 29. c5# { Black is checkmated } 1-0

Santiago (985) vs David (1003)

[Event "Casual game"] [Site "http://lichess.org/TLnM5j3P"] [Date "2015.02.25"] [White "Santiago"] [Black "David"] [Result "0-1"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "56"] [Variant "Standard"] [TimeControl "-"] [ECO "D00"] [Opening "Queen Pawn Game, General"] [Annotator "lichess.org"] 1. d4 d5 { Queen Pawn Game, General } 2. e3 Nc6 3. Nc3 Nf6 4. Nge2 Bg4 5. f3 Bh5?! { (0.19 > 0.82) Inaccuracy. The best move was Bf5. } (5... Bf5 6. g4 Bg6 7. a3 e6 8. g5 Nh5 9. e4 h6 10. h4 Bd6 11. exd5 exd5 12. f4) 6. Nf4 e6 7. e4?! { (0.91 > 0.22) Inaccuracy. The best move was h4. } (7. h4 h6 8. g4 Bg6 9. Nxg6 fxg6 10. Qd3 Bd6 11. Qxg6+ Kf8 12. Ne2 e5 13. dxe5 Nxe5) 7... dxe4 8. fxe4?? { (0.08 > -9.96) Blunder. The best move was Bb5. } (8. Bb5 Bg6 9. fxe4 Bxe4 10. Nxe4 Nxe4 11. O-O a6 12. Bxc6+ bxc6 13. c3 Qd7 14. Qc2 Nf6 15. Nd3 Qd5 16. Ne5 Bd6 17. Bf4) 8... Bxd1 9. Kxd1 Nxd4? { (-10.25 > -8.74) Mistake. The best move was Qxd4+. } (9... Qxd4+ 10. Bd3 Ng4 11. Rf1 Nxh2 12. Re1 Ng4 13. Bd2 Nce5 14. Kc1 O-O-O 15. Kb1 g5 16. Nfe2 Qf2 17. Rg1 Nxd3 18. cxd3 Rxd3 19. Bxg5) 10. Be3? { (-8.74 > -11.45) Mistake. The best move was Bd2. } (10. Bd2 Ng4 11. Kc1 Bd6 12. Bc4 Ne5 13. Bf1 O-O 14. a4 Bb4 15. Be3 a6 16. h3) 10... Nb3+ 11. Bd3 Nxa1 12. Nb5 Ng4 13. Ke2 Bc5 14. Rxa1 Nxe3 15. b4 Bb6 16. g4 Qf6 17. e5 Qxf4 18. Kd2?! { (-24.24 > Mate in 8) Checkmate is now unavoidable. The best move was Nxc7+. } (18. Nxc7+ Bxc7 19. a4 Nxg4 20. Rf1 Qxh2+ 21. Ke1) 18... Nf1+?! { (Mate in 8 > -29.51) Lost forced checkmate sequence. The best move was Nd5+. } (18... Nd5+ 19. Kd1 Qxg4+ 20. Ke1 Qg1+ 21. Ke2 Qf2+ 22. Kd1 Be3 23. Nxc7+ Nxc7 24. Bb5+ Nxb5 25. c3 Nxc3#) 19. Ke2?! { (-29.51 > Mate in 2) Checkmate is now unavoidable. The best move was Kc3. } (19. Kc3 Qxe5+ 20. Kb3 Qxa1 21. Bxf1 Qxf1 22. Nc3 a5 23. b5) 19... Nxh2?! { (Mate in 2 > -26.81) Lost forced checkmate sequence. The best move was Qf2+. } (19... Qf2+ 20. Kd1 Qd2#) 20. g5?! { (-26.81 > Mate in 5) Checkmate is now unavoidable. The best move was Nxc7+. } (20. Nxc7+ Bxc7 21. Kd1 Nf3 22. Ke2 Nxe5 23. Bb5+ Ke7 24. g5 Qxb4 25. a4 Qe4+ 26. Kd2 Qd4+ 27. Ke2 Qxa1 28. g6 hxg6 29. Kf2 Rh2+) 20... Qxe5+?! { (Mate in 5 > Mate in 9) Not the best checkmate sequence. The best move was Qe3+. } (20... Qe3+ 21. Kd1 Nf3 22. Nxc7+ Bxc7 23. Bb5+ Ke7 24. Bd3 Qe1#) 21. Kd2 Qxa1?! { (Mate in 2 > -28.79) Lost forced checkmate sequence. The best move was Nf3+. } (21... Nf3+ 22. Kc1 Qxa1#) 22. g6?! { (-28.79 > Mate in 7) Checkmate is now unavoidable. The best move was Nc3. } (22. Nc3 Be3+ 23. Kxe3 Qxc3 24. Kf4 Qxb4+ 25. Kg3 Qd6+ 26. Kg2 Ng4 27. Bb5+ Ke7 28. Kf3 Ne5+ 29. Ke2 Rad8 30. Bd3) 22... fxg6 23. c3 O-O-O 24. c4 Nf1+?! { (Mate in 3 > Mate in 4) Not the best checkmate sequence. The best move was Qb2+. } (24... Qb2+ 25. Kd1 Rxd3+ 26. Ke1 Bf2#) 25. Ke2 Be3?! { (Mate in 4 > Mate in 5) Not the best checkmate sequence. The best move was Qxa2+. } (25... Qxa2+ 26. Bc2 Qxc2+ 27. Kf3 Qf2+ 28. Ke4 Qe3#) 26. c5 Rhf8?! { (Mate in 4 > Mate in 4) Not the best checkmate sequence. The best move was Qxa2+. } (26... Qxa2+ 27. Bc2 Qxc2+ 28. Kf3 Qf2+ 29. Ke4 Qf4#) 27. Nxa7+ Kb8 28. c6 Rf2# { White is checkmated } 0-1

Pablo (970) vs David (1018)

[Event "Casual game"] [Site "http://lichess.org/Y14Nmy1r"] [Date "2015.02.26"] [White "Pablo"] [Black "David"] [Result "0-1"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "52"] [Variant "Standard"] [TimeControl "-"] [ECO "D06"] [Opening "Queen's Gambit Declined, Marshall Defense"] [Annotator "lichess.org"] 1. d4 d5 2. c4 Nf6 { Queen's Gambit Declined, Marshall Defense } 3. Nf3 dxc4 4. e3 Bg4 5. Bxc4 Nc6 6. Nc3 a6 7. O-O e6 8. Qa4? { (0.50 > -1.28) Mistake. The best move was h3. } (8. h3 Bh5 9. Bd2 Be7 10. a3 Bg6 11. Nh4 Be4 12. Nxe4 Nxe4 13. Nf3 O-O 14. Rc1 Nxd2 15. Nxd2 Qd7 16. Qf3) 8... b5 9. Qb3? { (-1.30 > -2.43) Mistake. The best move was Nxb5. } (9. Nxb5 axb5 10. Qxb5 Bxf3 11. gxf3 Qd6 12. Bd2 Be7 13. Bb3 Rb8 14. Qc4 O-O 15. Rac1 Rb6 16. Rfd1 Ra8 17. Ba4 Na5 18. Qxc7 Rxb2) 9... bxc4 10. Qxc4 Na5? { (-2.34 > -0.95) Mistake. The best move was Bxf3. } (10... Bxf3 11. gxf3 Qd7 12. Bd2 e5 13. d5 Nb4 14. Rac1 c6 15. dxc6 Qxd2 16. c7 Rc8) 11. Qa4+ Nc6?? { (-1.22 > 4.53) Blunder. The best move was c6. } (11... c6 12. Ne5 Qb6 13. f3 Bf5 14. e4 Bd6 15. Kh1 Bg6 16. Nxg6 hxg6 17. e5 Nh5 18. Ne4 Bb4 19. a3 Be7 20. b4 Nc4 21. g4) 12. Ne5? { (4.53 > 2.57) Mistake. The best move was Qxc6+. } (12. Qxc6+ Nd7 13. Ne5 Rb8 14. Nxg4 Rb6 15. Qc4 c5 16. Rd1 cxd4 17. Rxd4 Be7 18. Ne5 Bd6 19. Nf3 Qc7 20. Qxc7 Bxc7 21. b3 Ne5) 12... Bb4? { (2.57 > 4.26) Mistake. The best move was Qd6. } (12... Qd6 13. e4 Be7 14. Nxc6 Qd7 15. f3 Bh5 16. b3 a5 17. Qc4 O-O 18. Bf4 Bg6 19. Nb5 Ne8 20. Rac1 Bb4 21. Ne5 Qd8 22. Qe2) 13. Nxc6 Qd7 14. e4?? { (4.31 > 0.14) Blunder. The best move was Nxb4. } (14. Nxb4 Qxa4 15. Nxa4 a5 16. Nc2 Be2 17. Re1 Bb5 18. b3 O-O 19. Na3 Bxa4 20. bxa4 Rfb8 21. Nb5 c6 22. Nd6 Rb4 23. Bd2 Rb2) 14... Bxc3 15. bxc3 Nxe4? { (-0.06 > 1.16) Mistake. The best move was Be2. } (15... Be2 16. Qc2 Bxf1 17. Ne5 Qd6 18. Kxf1 O-O 19. a4 Rfb8 20. f3 Qb6 21. Nc4 Qb3 22. Qd3 Nd7 23. Bf4 Qb7 24. g3 a5 25. Kg2) 16. Ba3? { (1.16 > 0.11) Mistake. The best move was f3. } (16. f3 Bf5 17. fxe4 Bxe4 18. Rxf7 Bxc6 19. Rxd7 Bxa4 20. Rxg7 O-O-O 21. Bh6 Bb5 22. Rf7 Bc4 23. Bg7 Rhg8 24. Be5 Rd7 25. Rf6 Rdd8) 16... Nxc3? { (0.11 > 1.15) Mistake. The best move was Be2. } (16... Be2 17. d5 exd5 18. Rfe1 Bb5 19. Rxe4+ dxe4 20. Qxe4+ Qe6 21. Ne5 Rd8 22. Re1 f6 23. Ng6 Qxe4 24. Rxe4+ Kf7 25. Nxh8+ Kg8 26. h3) 17. Rfc1?? { (1.15 > -9.87) Blunder. The best move was Qb4. } (17. Qb4 Nb5 18. Ne5 Qd6 19. Qxb5+ axb5 20. Bxd6 Be2 21. Bxc7 Bxf1 22. Kxf1 f6 23. Nd3 Ra3 24. Nc5 Kf7 25. Rb1 Rxa2 26. Rxb5 Rha8) 17... Nxa4 18. Rab1 Bf5 19. Ne5 Qxd4 20. Rb7 Qxe5 21. h3 Nc3 22. Bb2 Qf4 23. Rxc3 O-O 24. Rcxc7 g6 25. Ba3 Rfd8 26. Rxf7?! { (-15.87 > Mate in 1) Checkmate is now unavoidable. The best move was Rc1. } (26. Rc1 Rd2 27. Rf1 Bd3 28. Rb4 Qf5 29. Rd4 Rxa2 30. Rd8+) 26... Rd1# { White is checkmated } 0-1

David (1032) vs Fabrice (1031)

[Event "Casual game"] [Site "http://lichess.org/dC7yaO1u"] [Date "2015.03.02"] [White "David"] [Black "Fabrice"] [Result "0-1"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "66"] [Variant "Standard"] [TimeControl "15 min"] [ECO "D00"] [Opening "Queen Pawn Game, Veresov Attack"] [Annotator "lichess.org"] 1. d4 d5 2. Nc3 { Queen Pawn Game, Veresov Attack } Nf6 3. e4 e6 4. Bg5 h6 5. Bh4?! { (0.58 > -0.23) Inaccuracy. The best move was Bxf6. } (5. Bxf6 gxf6 6. exd5 exd5 7. Bd3 Be6 8. Nge2 Nc6 9. O-O Rg8 10. Qc1 Qd6 11. a3 a6 12. Qe3 Be7 13. Nf4 Rg4 14. Nce2 f5) 5... Bb4 6. a3?! { (0.05 > -0.62) Inaccuracy. The best move was e5. } (6. e5 g5 7. Bg3 Ne4 8. Ne2 c5 9. a3 Bxc3+ 10. Nxc3 cxd4 11. Nxe4 dxe4 12. h4 Rg8 13. hxg5 hxg5 14. Qe2 Qa5+ 15. b4 Qc7) 6... Be7?! { (-0.62 > 0.27) Inaccuracy. The best move was Bxc3+. } (6... Bxc3+ 7. bxc3 g5 8. e5 gxh4 9. exf6 Qxf6 10. Qh5 Qg5 11. Qf3 c5 12. Nh3 Qg7 13. dxc5 Nd7 14. Qe3 O-O 15. Nf4 Nf6 16. Be2) 7. Nf3?! { (0.27 > -0.48) Inaccuracy. The best move was e5. } (7. e5 Nfd7 8. Bxe7 Qxe7 9. f4 a6 10. b4 Nc6 11. Be2 b5 12. Nf3 Bb7 13. O-O Nb6 14. g3 O-O 15. Kg2 Rad8 16. Bd3 Rfe8) 7... Ng4? { (-0.48 > 1.06) Mistake. The best move was Nxe4. } (7... Nxe4 8. Bxe7 Qxe7 9. Nxe4 dxe4 10. Nd2 f5 11. Bc4 O-O 12. O-O a6 13. a4 c5 14. dxc5 Qxc5 15. Re1 Nc6 16. c3 Qe5 17. Qb3) 8. Ne5? { (1.06 > 0.04) Mistake. The best move was Bxe7. } (8. Bxe7 Qxe7 9. e5 h5 10. Bd3 Nc6 11. O-O Bd7 12. Qd2 O-O-O 13. b4 a6 14. b5 axb5 15. Nxb5 Kb8 16. h3 Nh6 17. c4 dxc4) 8... Nxe5 9. dxe5? { (0.10 > -2.27) Mistake. The best move was Bxe7. } (9. Bxe7 Qxe7 10. dxe5 O-O 11. f4 Rd8 12. Bd3 d4 13. Ne2 c5 14. O-O Nc6 15. c3 b6 16. cxd4 Nxd4 17. Nxd4 Rxd4) 9... d4? { (-2.27 > 0.22) Mistake. The best move was Bxh4. } (9... Bxh4 10. exd5 O-O 11. g3 Be7 12. f4 exd5 13. Qxd5 c6 14. Qe4 g6 15. Bd3 Na6 16. O-O-O Nc5 17. Qf3 Nxd3+ 18. Rxd3 Qb6 19. Ne4) 10. Nb5? { (0.22 > -2.73) Mistake. The best move was Bxe7. } (10. Bxe7 Kxe7 11. Nb1 b6 12. Nd2 Bb7 13. f4 Nd7 14. Bc4 Kf8 15. O-O Kg8 16. Qf3 Kh7 17. Rad1 c5 18. Qg4 Rc8 19. c3 Re8) 10... Bxh4 11. g3 Qd7? { (-2.73 > -0.19) Mistake. The best move was a6. } (11... a6 12. Nxd4 Be7 13. f4 O-O 14. Nb3 Nd7 15. Qd3 c5 16. Rd1 b5 17. c4 Rb8 18. Be2 Qb6 19. Nd2 Rd8 20. Qc2 b4 21. O-O) 12. Qg4? { (-0.19 > -2.24) Mistake. The best move was gxh4. } (12. gxh4 Nc6 13. c3 O-O 14. Nxd4 Nxe5 15. Qh5 Ng6 16. O-O-O e5 17. Nf5 Qc6 18. Bd3 Bxf5 19. Qxf5 Qc5 20. h5 Nf4 21. Rhg1 Qxf2) 12... Bg5 13. f4? { (-1.79 > -2.86) Mistake. The best move was h4. } (13. h4 Bd2+ 14. Kxd2 O-O 15. a4 a6 16. Na3 Qxa4 17. Kc1 Nd7 18. f4 Nc5 19. Be2 Qc6 20. Nc4 Bd7 21. Rd1 b5 22. Nd2 Nxe4) 13... Qc6?? { (-2.86 > 0.34) Blunder. The best move was a6. } (13... a6 14. fxg5 h5 15. Qf4 axb5 16. Rd1 b4 17. axb4 Ra2 18. c3 Rxb2 19. Be2 c5 20. Qf2 Nc6 21. O-O cxb4 22. cxd4 Rxe2 23. Qxe2) 14. O-O-O? { (0.34 > -0.99) Mistake. The best move was fxg5. } (14. fxg5 Qb6 15. gxh6 gxh6 16. Qg7 Rf8 17. O-O-O Nc6 18. c3 dxc3 19. Nxc3 Bd7 20. Bb5 O-O-O 21. Rhf1 a6 22. Bxc6 Qe3+ 23. Kb1 Bxc6) 14... Be7 15. Qxg7 Rf8 16. Nxd4 Qxe4?! { (-0.74 > -0.17) Inaccuracy. The best move was Qb6. } (16... Qb6 17. f5 Bc5 18. Bb5+ c6 19. Nxe6 Bxe6 20. fxe6 cxb5 21. exf7+ Rxf7 22. Qg4 Be3+ 23. Kb1 Na6) 17. Rg1? { (-0.17 > -1.36) Mistake. The best move was Bc4. } (17. Bc4 Qg6 18. Qxg6 fxg6 19. Nxe6 Bxe6 20. Bxe6 Nc6 21. Rd5 Rd8 22. Rhd1 Rxd5 23. Rxd5 Nd8 24. Bc8 b6 25. Bg4 h5 26. Bf3 Ne6) 17... Qe3+? { (-1.36 > 0.76) Mistake. The best move was Nc6. } (17... Nc6 18. Bb5 Bd7 19. Nxc6 Bxc6 20. Bxc6+ bxc6 21. Qxh6 Qe3+ 22. Kb1 Qb6) 18. Kb1 Qxg1? { (0.89 > 2.87) Mistake. The best move was Qe4. } (18... Qe4 19. Bg2 Qg6 20. Qxg6 fxg6 21. Nxe6 Bxe6 22. Bxb7 Bc5 23. Rg2 Bg4 24. Rd3 g5 25. Bxa8 gxf4) 19. Bb5+ c6 20. Rxg1 cxb5 21. Nxb5 Nc6? { (2.79 > 5.24) Mistake. The best move was Kd8. } (21... Kd8 22. Rd1+ Bd7 23. Qxh6 Nc6 24. Qg7 a6 25. Nd6 Kc7 26. Nxf7 Rg8 27. Qh7 Raf8 28. Nd6 Bc8 29. Qd3 Kb8 30. Qe3 Bxd6 31. Rxd6) 22. Qxh6?! { (5.24 > 4.60) Inaccuracy. The best move was Rd1. } (22. Rd1 Bd7 23. Nc7+ Kd8 24. Nxa8 Kc8 25. b4 Nd8 26. Qxh6 Bc6 27. h4 Bb5) 22... Kd8 23. Rd1+ Bd7 24. Nd6? { (4.68 > 2.80) Mistake. The best move was f5. } (24. f5 Kc8 25. f6 Bc5 26. b4 Nxb4 27. axb4 Bxb5 28. bxc5) 24... Kc7 25. Qh5? { (2.81 > 1.31) Mistake. The best move was Nb5+. } (25. Nb5+ Kc8 26. Qg7 a6 27. Nd6+ Kc7 28. Nxf7 Rg8 29. Qh7 Raf8 30. Qd3) 25... Rh8? { (1.31 > 2.41) Mistake. The best move was Rad8. } (25... Rad8 26. b4 Bxd6 27. exd6+ Kb8 28. Qc5 f6 29. b5 b6 30. Qc3 Na5 31. Qc7+ Ka8 32. a4 Nb7 33. h4 e5 34. h5 Rh8) 26. Nb5+ Kc8?? { (1.94 > 9.12) Blunder. The best move was Kb6. } (26... Kb6 27. Qe2 a6 28. Rxd7 axb5 29. h4 Rad8 30. Rxd8 Bxd8 31. h5 Ne7 32. Qh2 Kc6 33. h6 Rh7 34. g4 Nd5 35. g5 Bb6 36. Qe2) 27. Qxf7?? { (9.12 > 3.91) Blunder. The best move was Qxh8+. } (27. Qxh8+ Nd8 28. c4 a6 29. Nd6+ Kc7 30. Nxf7 Rb8 31. Nd6 Nc6 32. Qh7 Rd8 33. c5 Bxd6 34. Rxd6 Kc8 35. h4 Na5 36. h5 Nc4) 27... Rxh2?? { (3.91 > 7.95) Blunder. The best move was a6. } (27... a6 28. Nd4 Rf8 29. Qg7 Re8 30. Nxe6 Bxe6 31. Qg6 Kc7 32. Qxe6) 28. Qg8+? { (7.95 > 6.17) Mistake. The best move was Nd4. } (28. Nd4 b5 29. Nxc6 Bxc6 30. Qxe6+ Kb7 31. Qxe7+ Kb6 32. Rd6 Rc8 33. e6 Rc7 34. Qd8 Kb7 35. e7 Re2 36. Rxc6 Rxc6 37. e8=Q Rxe8) 28... Bd8 29. Nd6+ Kc7 30. Nf7?? { (5.82 > 2.45) Blunder. The best move was Qf7. } (30. Qf7 Be7 31. Nb5+ Kc8 32. Nd4) 30... Ne7? { (2.45 > 5.18) Mistake. The best move was Rb8. } (30... Rb8 31. Qg6 Be7 32. f5 exf5 33. e6 Be8 34. Qxf5 b6 35. g4 Kb7 36. g5 Rc8 37. Qf4 Rg2 38. Qf3 Rxg5 39. Nxg5 Bxg5 40. b4) 31. Qf8 Rg2?? { (5.16 > 8.70) Blunder. The best move was Rh7. } (31... Rh7 32. g4 Rc8 33. f5 exf5 34. Ng5 Rh2 35. Qf6 Nc6 36. Qd6+ Kb6 37. Qxd7 Rc7 38. Qxf5 Bxg5 39. Qxg5 Re2 40. Rd6 Rh7 41. e6) 32. Rd6?? { (8.70 > 4.29) Blunder. The best move was Nxd8. } (32. Nxd8 Rxd8 33. Qxe7 Re2 34. Qc5+ Kb8 35. Qd6+ Kc8) 32... Rg1+ 33. Ka2 Rxg3 { White resigns } 0-1

Fabrice (1047) vs Stefan (1016)

The end was not recorded as it was too fast for the transcript (Pablo). Apparently an illegal move was made with a rook. The game ended in checkmate in a race to flag for time.

[Event "Casual game"] [Site "http://lichess.org/hbyKAEDK"] [Date "2015.03.03"] [White "Fabrice"] [Black "Stefan"] [Result "1-0"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "102"] [Variant "Standard"] [TimeControl "-"] [ECO "C41"] [Opening "Philidor Defense, General"] [Annotator "lichess.org"] 1. e4 e5 2. Nf3 d6 { Philidor Defense, General } 3. Bc4 h6 4. Nc3 c6 5. d3?! { (0.57 > 0.07) Inaccuracy. The best move was d4. } (5. d4 Qc7 6. a4 Nf6 7. O-O Be7 8. h3 O-O 9. Be3 Nbd7 10. a5 b5 11. axb6 Nxb6 12. Bb3 Bb7 13. Re1 Rfd8) 5... b5 6. Bb3 Nf6 7. a3 Bb7 8. Qe2 a5 9. Be3 b4 10. Na2?! { (0.54 > -0.25) Inaccuracy. The best move was axb4. } (10. axb4 axb4 11. Rxa8 Bxa8 12. Na2 Qa5 13. c3 bxc3 14. Nxc3 Nbd7 15. O-O Be7 16. d4 Qb4) 10... bxa3 11. bxa3 d5 12. O-O? { (0.11 > -1.36) Mistake. The best move was Nc3. } (12. Nc3 Bd6 13. exd5 cxd5 14. Ba4+ Nbd7 15. Rb1 Qc8 16. Nb5 Bb8 17. Nh4) 12... dxe4?? { (-1.36 > 3.54) Blunder. The best move was a4. } (12... a4 13. Bxa4 Rxa4 14. Rfb1 Qc8 15. Nxe5 Bxa3 16. Nc3 Ra6 17. exd5 O-O 18. Rb3 Bd6 19. Rxa6 Bxa6 20. Nc4 Bxc4 21. dxc4 Nbd7 22. Rb1) 13. dxe4? { (3.54 > 0.61) Mistake. The best move was Nxe5. } (13. Nxe5 Qe7 14. Nxf7 Rh7 15. Bf4 Qc5 16. Bxb8 a4 17. Bc4 g5 18. Nc3 Rxf7 19. Bg3 Re7 20. Nxe4 O-O-O 21. Rab1 Nxe4) 13... Ba6 14. c4?! { (0.71 > 0.17) Inaccuracy. The best move was Bc4. } (14. Bc4 Bxc4 15. Qxc4 Nbd7 16. Rfd1 Qc8 17. Nc3 Ng4) 14... Bxa3?! { (0.17 > 0.74) Inaccuracy. The best move was Nbd7. } (14... Nbd7 15. Nc3 Qc7 16. Na4 Nxe4 17. Bb6 Nxb6 18. Qxe4 Nd7 19. Rfe1 Bd6 20. c5) 15. Nxe5 O-O 16. Rfd1 Qc7 17. Bf4?! { (0.53 > -0.16) Inaccuracy. The best move was Bd4. } (17. Bd4 Re8 18. Ng4 Nbd7 19. Nxf6+ Nxf6 20. Bxf6 gxf6 21. Qg4+ Kh8 22. Qh4 Bf8 23. Nc3 Qe5) 17... Qb7? { (-0.16 > 1.27) Mistake. The best move was Bd6. } (17... Bd6 18. Qb2 Nbd7 19. Rxd6 Qxd6 20. Ng6 Qe6 21. Nxf8 Rxf8 22. Nc3 Bxc4 23. Bc2 Ra8) 18. Qf3 Nbd7 19. Bxh6?? { (0.97 > -3.58) Blunder. The best move was Nxd7. } (19. Nxd7 Nxd7 20. Rab1 Be7 21. Ba4 Qc8 22. e5 Bxc4 23. Nc3 Nc5) 19... Nxe5 20. Qg3 Ng6 21. h4?? { (-3.48 > -6.55) Blunder. The best move was c5. } (21. c5 Kh7 22. Bc1 Nxe4 23. Qh3+ Kg8 24. Bxa3 Nf4 25. Qe3 Ne2+ 26. Kh1 Qxb3 27. Qxe4) 21... Nxe4 22. Qg4? { (-6.14 > -8.93) Mistake. The best move was Qf3. } (22. Qf3 Nxf2 23. Qxf2 Qxb3 24. Be3 Rad8 25. Bd4 c5) 22... Rfe8? { (-8.93 > -6.27) Mistake. The best move was Nxf2. } (22... Nxf2 23. Kxf2 Bc5+ 24. Be3 Bxe3+ 25. Kxe3 Qxb3+ 26. Kf2 Bxc4 27. Kg1 Rfd8 28. Re1 Qb6+ 29. Kh1 Rd4 30. Re4 Qb2 31. Rae1 Rxe4 32. Qxe4) 23. c5?? { (-6.27 > -10.41) Blunder. The best move was Bc2. } (23. Bc2 Nxf2 24. Qd4 Bb2 25. Qxf2 Bxa1 26. Rxa1 gxh6 27. h5 Ne5 28. Qf5 Qa7+ 29. Kh1 Qe3 30. Qh7+ Kf8) 23... Nxc5?? { (-10.41 > -4.67) Blunder. The best move was Qxb3. } (23... Qxb3 24. Be3 Qc2 25. Re1 Bb2 26. Rac1 Bxc1 27. Nxc1 Nxf2 28. Qf3 Ne4 29. Qd1 Qxd1 30. Rxd1 Nxh4 31. Bf4 Nf5 32. Re1 a4) 24. Qxg6 Ne6?? { (-4.79 > -1.01) Blunder. The best move was Bb2. } (24... Bb2 25. Bxf7+ Qxf7 26. Qxf7+ Kxf7 27. Rab1 Rab8 28. Bf4 Bd3 29. Rbc1 Bxc1 30. Bxb8 Bb2 31. Bd6 Be2 32. Rd2 Nd3 33. Bc5 Nxc5 34. Rxb2) 25. Bxe6 fxe6? { (-1.34 > -0.09) Mistake. The best move was Bb2. } (25... Bb2 26. Rab1 Rxe6 27. Qc2 gxh6 28. Rxb2 Re2 29. Qxe2 Bxe2 30. Rxb7 Bxd1 31. f3 a4 32. Kf2 a3 33. Ke3 Kg7 34. Kd2 Ba4 35. Nc3) 26. Rab1?! { (-0.09 > -0.72) Inaccuracy. The best move was Nc3. } (26. Nc3 Bb4 27. Ne4 Qf7 28. Qg3 Rf8 29. Be3 Be2 30. Rdc1 Bd3 31. Ng5 Qf6 32. Nf3 Rad8) 26... Qc7 27. Nc3 Bb4 28. Ne4 Rad8?? { (-0.13 > 7.14) Blunder. The best move was Qf7. } (28... Qf7 29. Qg3 Rf8 30. Rb3 Be2 31. Rc1 Rad8 32. Rxc6 Rd7 33. Be3 Rb7 34. Bc5 Bxc5) 29. Nf6+ Kf8 30. Nh7+ Kg8 31. Re1?? { (7.58 > -2.54) Blunder. The best move was Nf6+. } (31. Nf6+ Kf8 32. Qh7 Qf7 33. Qh8+ Ke7 34. Nxe8 Rxd1+ 35. Rxd1 gxh6 36. Nc7 Bd6 37. Nxa6 Qf4 38. Qg7+ Ke8 39. g3 Qe5 40. Qb7 a4) 31... Bxe1? { (-2.54 > 0.00) Mistake. The best move was Qf7. } (31... Qf7 32. Qxf7+ Kxf7 33. Bf4 Bd3 34. Ng5+ Kg6 35. Ra1 Bxe1 36. Rxe1 Rd5 37. Be5 a4 38. f4 a3 39. g4 a2 40. h5+ Kh6 41. Kf2) 32. Rxe1? { (0.00 > -2.27) Mistake. The best move was Nf6+. } (32. Nf6+ Kf8 33. Nh7+ Kg8) 32... Bc4? { (-2.27 > 0.34) Mistake. The best move was Qf7. } (32... Qf7 33. Qxf7+ Kxf7 34. Be3 a4 35. Ng5+ Kg6 36. Ra1 Bb5 37. g4 Rd3 38. Kg2 e5 39. h5+ Kf6 40. Ne4+ Kf7 41. Nc5 Rd5 42. Ra3) 33. Bg5 Bd3?? { (0.00 > 3.29) Blunder. The best move was Qf7. } (33... Qf7 34. Nf6+ Kf8 35. Nh7+ Kg8) 34. Nf6+ Kf8 35. Nh7+ Kg8 36. Nf6+ Kf8 37. Nxe8 Bxg6 38. Nxc7 Rd6 39. Nxe6+ Kf7 40. Nf4 Bf5 41. f3 a4 42. Ra1? { (4.03 > 2.85) Mistake. The best move was Re7+. } (42. Re7+ Kg8 43. Ra7 Rd4 44. g4 Bd7 45. Ng6 c5 46. Be3 Rd1+ 47. Kf2 Bb5 48. Bxc5 Kh7 49. h5 Kg8 50. Ne7+ Kh7 51. Ke3 Rd3+) 42... Bc2 43. Ne2 c5 44. f4? { (2.96 > 1.78) Mistake. The best move was Be3. } (44. Be3 c4 45. Nd4 Bb3 46. Kf2 Rd8 47. Ke2 Rc8 48. Kd2 c3+ 49. Kd3 g6 50. Nxb3 axb3 51. Ra7+ Ke6 52. Ra6+ Kd5 53. Rxg6 c2) 44... c4?! { (1.78 > 2.52) Inaccuracy. The best move was Rd1+. } (44... Rd1+ 45. Rxd1 Bxd1 46. Nc1 Bg4 47. Kf2 a3 48. Bd8 Ke6 49. Ke3 Bf5 50. Bc7 g6 51. Kd2 Kd5 52. Kc3 Be6 53. g3 Ke4 54. Be5) 45. h5?! { (2.52 > 1.70) Inaccuracy. The best move was Nc3. } (45. Nc3 Kg6 46. f5+ Kxf5 47. Nxa4 Ke5 48. Nc3 Rd7 49. Ra5+ Kd4 50. Ne2+ Ke4 51. Rc5 Bd3 52. Nf4 Rf7 53. Nxd3 cxd3 54. h5 Rb7) 45... c3? { (1.70 > 3.25) Mistake. The best move was Rd1+. } (45... Rd1+ 46. Rxd1 Bxd1 47. Nc3 a3 48. f5 Bxh5 49. Kf2 Bg4 50. Bc1 Bxf5 51. Ke3 a2 52. Nxa2 Be6 53. Nc3 Ke7 54. Kd4 Kd7 55. Nb5) 46. Nxc3 Rd4 47. Ne4?? { (3.34 > 0.06) Blunder. The best move was Kf2. } (47. Kf2 Rd2+ 48. Kf1 Bb3 49. Rxa4 Bxa4 50. Nxa4 Rd4 51. Nc3 Rd2 52. Ne2 g6 53. h6 Kg8 54. g4 Rd3 55. Kf2 Kh7) 47... Rd3? { (0.06 > 2.65) Mistake. The best move was Bxe4. } (47... Bxe4 48. Kf2 Bf5 49. h6 gxh6 50. Bxh6 Bd7 51. Ke3 Rb4 52. Bg5 Rb3+ 53. Kd4 a3 54. Bd8 Rb4+ 55. Kc3 Rxf4 56. Rxa3 Ra4 57. Rxa4) 48. h6 gxh6 49. Bxh6 Rf3?? { (2.48 > 48.89) Blunder. The best move was Rd1+. } (49... Rd1+ 50. Rxd1 Bxd1 51. f5 Bc2 52. Ng3 a3 53. Bc1 a2 54. Bb2 Bb3 55. Kf2 Bd5 56. Ne2 Bc4 57. Nc3 Kf6) 50. g4?? { (48.89 > 0.67) Blunder. The best move was gxf3. } (50. gxf3 Bb3 51. Bg5 Kf8 52. Nc5 Bf7 53. Rxa4 Bh5 54. Kf2 Kf7 55. Ra7+ Kg8) 50... Rh3?? { (0.67 > 9.51) Blunder. The best move was Kg6. } (50... Kg6 51. Bg5 Bxe4 52. Rxa4 Bb7 53. Bh4 Bc8 54. f5+ Bxf5 55. Ra6+ Kg7 56. gxf5 Rxf5 57. Kg2 Kf7 58. Kg3 Rf1 59. Bg5 Rb1 60. Kf3) 51. Nd6+?? { (9.51 > 3.01) Blunder. The best move was Ng5+. } (51. Ng5+ Kg6 52. Nxh3 Kxh6 53. Kf2 Bb3 54. Ng5 Kg7 55. Ke3 Kh6 56. Ne4 Be6 57. f5 Bd7 58. Nc5 Bb5 59. Ne6 Kh7 60. g5 Kg8) 51... Kg6? { Black resigns (3.01 > 4.16) Mistake. The best move was Ke6. } (51... Ke6 52. Nb5 Kd5 53. Bg5 Rb3 54. Na3 Bh7 55. Rd1+ Ke4 56. Nc4 Rb4 57. Rc1 Bg8 58. Re1+ Kd4 59. Na5 Kc3 60. Nc6 Rb6 61. Re3+) 1-0

David (1016) vs Stefan (1001)

[Event "Casual game"] [Site "http://lichess.org/AFpor5zI"] [Date "2015.03.04"] [White "David"] [Black "Stefan"] [Result "0-1"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "74"] [Variant "Standard"] [TimeControl "-"] [ECO "B50"] [Opening "Sicilian Defense, Modern Variations"] [Annotator "lichess.org"] 1. e4 c5 2. Nf3 d6 { Sicilian Defense, Modern Variations } 3. d4 h6? { (0.25 > 1.27) Mistake. The best move was cxd4. } (3... cxd4 4. Nxd4 Nc6 5. Bb5 Bd7 6. Nc3) 4. d5?! { (1.27 > 0.69) Inaccuracy. The best move was dxc5. } (4. dxc5 Nc6 5. Nc3 Nf6 6. cxd6 exd6 7. Be2 Be7 8. O-O O-O 9. Bf4 Be6 10. a3 a6 11. Nd4 Nxd4 12. Qxd4) 4... Nf6 5. Bb5+ Bd7 6. Bxd7+ Nbxd7 7. Nc3 a6 8. O-O b5 9. a3 Nb6?! { (0.08 > 0.66) Inaccuracy. The best move was g5. } (9... g5 10. Be3 Ng4 11. Bd2 Bg7 12. h3 Ngf6 13. Be3 O-O 14. Nd2 Qb8 15. f4 gxf4 16. Bxf4 b4 17. Ne2 Nh5 18. axb4 Qxb4) 10. Re1 b4?! { (0.83 > 1.68) Inaccuracy. The best move was Qc7. } (10... Qc7 11. Bf4 Nh5 12. Bd2 g5 13. Ne5 dxe5 14. Qxh5 Bg7 15. b3 Nd7 16. Qe2 O-O 17. f3 Nf6 18. Be3 Rfd8) 11. axb4 cxb4 12. Ne2?! { (1.77 > 1.05) Inaccuracy. The best move was Na4. } (12. Na4 Nbd7 13. Nd4 a5 14. c3 g6 15. Nc6 Qc7 16. Be3 h5 17. f3 bxc3 18. Nxc3 Bh6 19. Bxh6 Rxh6 20. Qd2 Qb6+ 21. Kh1) 12... Nxe4 13. Qd4 Nf6 14. Qxb4?! { (1.15 > 0.32) Inaccuracy. The best move was c4. } (14. c4 bxc3 15. Nxc3 Qc7 16. Be3 Nfd7 17. Nd2 Rg8 18. Qd3 g5 19. Bd4 Ne5 20. Bxe5 dxe5 21. Rxa6 Rxa6 22. Qxa6 Bg7 23. Qb5+ Kf8) 14... Nfxd5 15. Qc4?? { (0.65 > -10.15) Blunder. The best move was Qb3. } (15. Qb3 e6 16. Nfd4 e5 17. Nc6 Qc7 18. Ned4 g6 19. Rxa6 Rxa6 20. Qb5 Nd7 21. Qxa6 N5b6 22. Bd2 Bg7 23. c4 O-O) 15... Nxc4 16. Ned4 Qb6 17. Nf5 e6 18. Be3 Ncxe3 19. fxe3 exf5 20. Rad1 Nf6 21. Rd4 Be7 22. e4 fxe4 23. Kf1 exf3 24. gxf3 Qxd4 25. c3 Qd3+ 26. Kf2 Qc2+?! { (Mate in 8 > -31.65) Lost forced checkmate sequence. The best move was Qd2+. } (26... Qd2+ 27. Kf1 Nd5 28. Re2 Ne3+ 29. Rxe3 Qxe3 30. Kg2 Bh4 31. h3 Qf2+ 32. Kh1 Bg3 33. c4 Qh2#) 27. Re2 Qb3 28. h3 Ra7 29. Ke3?! { (-28.37 > Mate in 8) Checkmate is now unavoidable. The best move was h4. } (29. h4 Qc4 30. Rd2 Qxh4+ 31. Ke2 Qg3 32. Rd3 Qg2+ 33. Kd1 Qxb2 34. c4 Rb7 35. Rd2 Qb3+ 36. Ke2 Qxc4+ 37. Kf2 Qh4+ 38. Kf1) 29... O-O?! { (Mate in 8 > -30.29) Lost forced checkmate sequence. The best move was Nd5+. } (29... Nd5+ 30. Kf2 Nf4 31. c4 Nxe2 32. Kxe2 Rb7 33. Kf2 Bh4+ 34. Kg2 Qxb2+ 35. Kg1 Qf2+ 36. Kh1 Rb1#) 30. f4?! { (-30.29 > Mate in 7) Checkmate is now unavoidable. The best move was Kf2. } (30. Kf2 Qc4 31. Rd2 Qf4 32. Ke2 Rc8 33. Rc2 Qh2+ 34. Kd3 Qxh3 35. Rf2 Qf5+ 36. Ke2 Qb1 37. f4 Ne4 38. Ke3 Nxf2 39. Kxf2 Qxb2+) 30... d5 31. Kd3 Qc4+ 32. Kd2 Ne4+ 33. Ke3 Bc5+ 34. Kf3 Qd3+ 35. Re3 Qxe3+ 36. Kg4 g6 37. f5 Qg3# { White is checkmated } 0-1

Fabrice (1062) vs Carlos (1027)

[Event "Casual game"] [Site "http://lichess.org/BBpRuF6o"] [Date "2015.03.05"] [White "laussy"] [Black "Anonymous"] [Result "1-0"] [WhiteElo "1335"] [BlackElo "?"] [PlyCount "77"] [Variant "Standard"] [TimeControl "600+0"] [ECO "C55"] [Opening "Italian Game, Two Knights Defense"] [Annotator "lichess.org"] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 { Italian Game, Two Knights Defense } 4. Nc3 Bb4 5. a3 Ba5 6. b4 Bb6 7. d3 d6 8. Bg5 h6 9. Bh4 g5 10. Bg3 Bg4 11. Nb5?! { (0.04 > -0.79) Inaccuracy. The best move was h4. } (11. h4 Nh5 12. Nd5 f6 13. Bb5 Nxg3 14. fxg3 a6 15. Nxb6 cxb6 16. Bc4 b5 17. Bd5 Qb6 18. hxg5 fxg5 19. Qd2) 11... Nd4 12. Nbxd4 exd4?! { (-0.33 > 0.38) Inaccuracy. The best move was Bxd4. } (12... Bxd4 13. Rb1 Bc3+ 14. Kf1 c6 15. h3 Bh5 16. Rb3 Bd4 17. c3 Bb6 18. h4 g4 19. Nd2 O-O 20. Rb2 d5 21. Bb3 Re8 22. Qe2) 13. h3 Bh5 14. Bh2 g4?! { (0.36 > 0.94) Inaccuracy. The best move was O-O. } (14... O-O 15. g4 Bg6 16. O-O a5 17. Re1 axb4 18. axb4 Rxa1 19. Qxa1 d5 20. exd5 Nxd5 21. Qb2 Nc3 22. Be5 c6) 15. hxg4 Bxg4 16. Bg3 Qe7 17. Bh4 d5? { (0.96 > 3.10) Mistake. The best move was O-O-O. } (17... O-O-O 18. Qc1 Rdg8 19. Qf4 Rg6 20. O-O-O Re8 21. Rde1 Bxf3 22. gxf3 a6 23. Kb2 Reg8 24. Bg3 h5 25. e5 dxe5 26. Qxe5) 18. Bxd5?! { (3.10 > 2.36) Inaccuracy. The best move was e5. } (18. e5 dxc4 19. Bxf6 Qf8 20. dxc4 c5 21. bxc5 Bxc5 22. Qd3 Rg8 23. Nxd4 a6 24. Rb1 Rb8) 18... Nxd5?? { (2.36 > 5.50) Blunder. The best move was c6. } (18... c6 19. e5 Bxf3 20. Qxf3 Qxe5+ 21. Kf1 Nxd5 22. Re1 Qxe1+ 23. Kxe1 Rg8 24. Bg3 Rg6 25. Bf4 a5 26. Bxh6 axb4 27. Bg5) 19. Bxe7 Nxe7 20. Qd2 O-O-O 21. O-O? { (5.59 > 3.92) Mistake. The best move was Ne5. } (21. Ne5 Be6 22. Rxh6 Rdf8 23. Qg5) 21... Rhg8? { (3.92 > 5.20) Mistake. The best move was Bxf3. } (21... Bxf3 22. Qf4 Bxe4 23. dxe4 Kb8 24. a4 d3 25. cxd3 Ng6 26. Qxf7 Rhg8 27. a5 Bd4 28. Rac1 Rg7 29. Qf5 Nh4 30. Qh3) 22. Ne5 h5 23. Nxg4?! { (5.35 > 4.79) Inaccuracy. The best move was Nxf7. } (23. Nxf7 Rdf8 24. Nh6 Rg6 25. Nxg4 hxg4 26. Qe2 Re8 27. f4 gxf3 28. Qxf3 Kb8 29. Qh5 Reg8 30. Rf2 Nc8 31. Qh2 Rg3 32. Raf1 c6) 23... Rxg4 24. a4 a5? { (4.85 > 6.06) Mistake. The best move was Rdg8. } (24... Rdg8 25. f3 Rxg2+ 26. Qxg2 c6 27. Qxg8+ Nxg8 28. Kf2 Nf6 29. Kg3 Bc7+ 30. f4 Kd7 31. Rh1 Ke6 32. Rab1 Bd6) 25. bxa5 Ba7?! { (6.27 > 6.93) Inaccuracy. The best move was Rdg8. } (25... Rdg8 26. g3 Bc5 27. a6 bxa6 28. Qa5 R4g5 29. Qxa6+ Kd7 30. Qc4 h4 31. a5 hxg3 32. f4 Rh5 33. Qxf7 Rh6 34. Kg2 Rh2+ 35. Kf3) 26. Rab1?! { (6.93 > 6.25) Inaccuracy. The best move was Rfb1. } (26. Rfb1 Rdg8 27. g3 Nc6 28. Qh6 R4g6 29. Qxh5 Nd8 30. Qh3+ Re6 31. Rb5 Kb8 32. Rab1 Ka8 33. Qf5 Rh8 34. R5b2 Rg8) 26... Rdg8 27. f3 Rg3?! { (6.47 > 6.99) Inaccuracy. The best move was Rxg2+. } (27... Rxg2+ 28. Qxg2 Rxg2+ 29. Kxg2 Ng6 30. f4 Bc5 31. f5 Ne5 32. Rh1 c6 33. Rb2 Be7 34. Rhb1 Bd8 35. Rxb7 Bxa5 36. Rb8+ Kc7 37. Rh8) 28. Rf2 h4? { (7.00 > 9.84) Mistake. The best move was Nc6. } (28... Nc6 29. Qf4 Nd8 30. a6 b6 31. Qf5+ Kb8 32. Qxh5 R3g5 33. Qh7 Rf8 34. Rb5 Rc5) 29. Qb4 b6?! { (9.49 > 12.40) Inaccuracy. The best move was Nc6. } (29... Nc6 30. Qxb7+ Kd7 31. Rb5 R3g6 32. Rf5 R8g7 33. Rd5+ Rd6 34. Rxd6+ Kxd6 35. Qb5 Rg6 36. f4 Ke7) 30. Qxe7 h3 31. Qxf7 Rh8 32. Qf5+ Kb7 33. axb6 Bxb6 34. a5 hxg2 35. Rxg2 Rhg8 36. Qd5+ Kc8 37. Qxg8+ Rxg8 38. Rxg8+ Kd7 39. axb6 { Black resigns } 1-0

Pablo (956) vs Camilo (968)

Camilo wins on time. Interestingly, 24. Qd6+?! is not a blunder (only a mistake). The next move, however, is a proper queen panick moment.

[Event "Casual game"] [Site "http://lichess.org/sq7m5Ur2"] [Date "2015.03.06"] [White "Pablo"] [Black "Camilo"] [Result "1-0"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "60"] [Variant "Standard"] [TimeControl "-"] [ECO "D30"] [Opening "Queen's Gambit Declined, General"] [Annotator "lichess.org"] 1. d4 d5 2. c4 e6 { Queen's Gambit Declined, General } 3. e3 Nc6 4. Bd3 Na5 5. Nf3?! { (0.62 > -0.12) Inaccuracy. The best move was cxd5. } (5. cxd5 exd5 6. Nf3 Nf6 7. O-O Bd6 8. Nc3 O-O 9. Bd2 b6 10. Rc1 Nc4 11. Nxd5 Nxb2 12. Nxf6+ Qxf6 13. Bxh7+ Kxh7 14. Qc2+ Qg6) 5... Bb4+?! { (-0.12 > 0.83) Inaccuracy. The best move was Nxc4. } (5... Nxc4 6. O-O Nf6 7. Nc3 Be7 8. b3 Nd6 9. Ne5 O-O 10. Ba3 Bd7 11. Qf3 a6 12. Qg3 Kh8 13. Rac1 Nfe4 14. Nxe4 Nxe4 15. Bxe7) 6. Bd2 Qd6?? { (0.89 > 4.22) Blunder. The best move was Nc6. } (6... Nc6 7. Bxb4 Nxb4 8. Qa4+ Nc6 9. O-O Ne7 10. a3 O-O 11. Rc1 a6 12. Nc3 b6 13. cxd5 exd5 14. b4 Bb7 15. Qc2 h6 16. Qb3) 7. O-O?? { (4.22 > 1.06) Blunder. The best move was c5. } (7. c5 Bxd2+ 8. Qxd2 Qd8 9. Qxa5 Ne7 10. O-O O-O 11. Qc3 Bd7 12. Qc2 h6 13. Nc3 a6 14. b4 f6 15. Rfc1 Bc6 16. a4 Qe8) 7... h6?? { (1.06 > 4.92) Blunder. The best move was dxc4. } (7... dxc4 8. Qa4+ Nc6 9. Be4 Ne7 10. a3 Bxd2 11. Nbxd2 Qd8 12. Qxc4 Bd7 13. Qc2 f5 14. Bd3 O-O 15. Rac1 Nd5 16. b4 a6 17. Nc4) 8. e4?? { (4.92 > 1.10) Blunder. The best move was c5. } (8. c5 Qd8 9. Bxb4 Nc6 10. Bc3 Nf6 11. Nbd2 Bd7 12. b4 a6 13. a4 Ne7 14. Ne5 O-O 15. b5 axb5 16. axb5 Rxa1 17. Qxa1 Ne4) 8... g5?? { (1.10 > 4.70) Blunder. The best move was dxc4. } (8... dxc4 9. Qa4+ Bd7 10. Qxb4 Qxb4 11. Bxb4 Nc6 12. Bxc4 Nxb4 13. Nc3 O-O-O 14. a3 Nc6 15. Rfe1 Nce7 16. Ne5 Be8 17. d5 exd5 18. exd5) 9. c5 Bxc5? { (4.67 > 7.11) Mistake. The best move was Qd8. } (9... Qd8 10. Bxb4 dxe4 11. Bxe4 Nf6 12. Nbd2 Nc6 13. Bxc6+ bxc6 14. Ne5 O-O 15. Bc3 Ba6 16. Re1 Qd5 17. b3 Nd7) 10. dxc5 Qxc5 11. Ne5? { (7.10 > 4.45) Mistake. The best move was Bc3. } (11. Bc3 f6 12. b4 Qd6 13. e5 Qe7 14. exf6 Nxf6 15. Bg6+ Kf8 16. bxa5 c5 17. Ne5 d4 18. Bb2 b6 19. Nd2 Ba6) 11... f6?? { (4.45 > 12.38) Blunder. The best move was Nc6. } (11... Nc6 12. Nxc6 bxc6 13. exd5 cxd5 14. Bc3 f6 15. Nd2 Bd7 16. Nb3 Qd6 17. Qh5+ Kf8 18. Bd4 e5) 12. Qh5+ Kd8 13. Nf7+ Ke7 14. Nxh8 Nb3 15. Be3 Nd4 16. Nc3 f5 17. Qf7+ Kd6 18. Na4 Qc6?! { (23.74 > Mate in 4) Checkmate is now unavoidable. The best move was Qc2. } (18... Qc2 19. Bxc2 Nxc2 20. Rac1 Ne7 21. Bc5+ Ke5 22. Qxe7 Kf4 23. Qxc7+ e5 24. f3 d4 25. Rxc2 Be6 26. Ng6+ Ke3 27. exf5) 19. Bxd4?! { (Mate in 4 > 22.59) Lost forced checkmate sequence. The best move was e5+. } (19. e5+ Kxe5 20. Ng6+ Kd6 21. Qf8+ Kd7 22. Ne5#) 19... Ne7?! { (22.59 > Mate in 7) Checkmate is now unavoidable. The best move was dxe4. } (19... dxe4 20. Bc5+ Kd5 21. Bc2 Kc4 22. Ng6 Kb5 23. Ne5 b6 24. Nxc6 Kxc6 25. Qxg8 Kb7 26. Qe8 Rb8 27. Bd4 Ka8 28. Be5 Ba6 29. Qc6+) 20. e5+ Kd7 21. Rac1 Qxa4 22. Bc5 b6 23. Qxe7+ Kc6 24. Qd6+? { (Mate in 3 > 8.83) Lost forced checkmate sequence. The best move was Bb4+. } (24. Bb4+ Qc2 25. Rxc2+ Kb7 26. Qxc7#) 24... Kb7? { (8.83 > 11.63) Mistake. The best move was cxd6. } (24... cxd6 25. Bxd6+ Kd7 26. b3 Qa5 27. Rc7+ Ke8 28. b4 Qa4 29. Rf7 Bb7 30. Rxb7 Qc6 31. Re7+ Kd8 32. Rxe6 Qb7 33. Bxf5) 25. Qd7?? { (11.63 > -2.86) Blunder. The best move was Qe7. } (25. Qe7 Qd7 26. Ba3 Qxe7 27. Bxe7 c5 28. Nf7 Bd7 29. h3 g4 30. hxg4 fxg4 31. Nxh6 Re8 32. Bf6) 25... Bxd7 26. b3 Qa3?? { (-2.76 > 7.35) Blunder. The best move was Qa5. } (26... Qa5 27. Bd6 cxd6 28. exd6 Rc8 29. Nf7 Qa3 30. Rxc8 Kxc8 31. Re1 Kb8 32. g3 Qxa2 33. Rc1 Qd2 34. Rc7 Qxd3 35. Rxd7 Qb1+ 36. Kg2) 27. Bxa3 Rxh8 28. Rc3?! { (7.34 > 6.65) Inaccuracy. The best move was Be7. } (28. Be7 c5 29. f3 Re8 30. Bf6 Rc8 31. g4 Rg8 32. gxf5 exf5 33. Kf2 Kc6 34. f4 gxf4 35. Kf3 Be6 36. Rg1 Rxg1 37. Rxg1 c4) 28... f4?! { (6.65 > 7.64) Inaccuracy. The best move was c5. } (28... c5 29. Bb2 a6 30. a4 Rc8 31. Rb1 d4 32. Rcc1 Bc6 33. f3 Bd5 34. Ba3 g4 35. Kf2 Rg8 36. b4 gxf3 37. gxf3) 29. Rfc1?! { (7.64 > 6.83) Inaccuracy. The best move was Be7. } (29. Be7 f3 30. gxf3 c5 31. Rcc1 Rg8 32. Kg2 Be8 33. Kg3 Bg6 34. Be2 Bh5 35. Bd6 Kc6 36. Rg1 Rg7 37. Bf8 Rh7 38. Rgd1 Rh8) 29... Kc8?? { (6.83 > Mate in 6) Checkmate is now unavoidable. The best move was c5. } (29... c5 30. f3 Rg8 31. R3c2 Be8 32. Kf2 a6 33. Rd2 Bg6 34. Bf1 h5 35. Bb2 g4 36. g3 fxg3+ 37. hxg3 gxf3 38. Bh3 Re8 39. Kxf3) 30. Rxc7+ Kd8 { Black resigns } 0-1

Stefan (1018) vs Fabrice (1076)

The end was not recorded as it was too fast for the transcript (Pablo). The game ended in checkmate shortly after the last position shown.

[Event "Casual game"] [Site "http://lichess.org/AWK0DTVU"] [Date "2015.03.09"] [White "Stefan"] [Black "Fabrice"] [Result "0-1"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "124"] [Variant "Standard"] [TimeControl "-"] [ECO "D06"] [Opening "Queen's Gambit Declined, Marshall Defense"] [Annotator "lichess.org"] 1. d4 d5 2. c4 Nf6 { Queen's Gambit Declined, Marshall Defense } 3. c5?! { (0.28 > -0.53) Inaccuracy. The best move was cxd5. } (3. cxd5 c6 4. dxc6 Nxc6 5. Nf3 e5 6. e3 exd4 7. Nxd4 Bb4+) 3... e6 4. h3 Nc6?! { (-0.68 > -0.16) Inaccuracy. The best move was b6. } (4... b6 5. cxb6 axb6 6. Nf3 Bd6 7. e3 O-O 8. Nc3 Bb7 9. Bd2 Nbd7 10. Be2 c5 11. O-O Ne4 12. Bb5 Ndf6 13. a3) 5. e3 Be7 6. Nf3 Ne4 7. a3 f6 8. Bd3 Bd7 9. Bxe4?! { (0.50 > -0.13) Inaccuracy. The best move was b4. } (9. b4 O-O 10. Bb2 Qe8 11. Nc3 Qg6 12. O-O a6 13. Qc2 f5 14. Ne2 Rad8 15. Nf4 Qh6 16. b5 axb5 17. Bxb5 g5) 9... dxe4 10. Nfd2 f5 11. g4?! { (-0.04 > -0.79) Inaccuracy. The best move was Nc3. } (11. Nc3 a6 12. O-O O-O 13. b4 b5 14. Qb3 a5 15. Rb1 Rb8 16. Qd1 axb4 17. axb4 Kh8 18. Qe2 Bf6) 11... Bg5 12. gxf5 exf5 13. Nc3 Qe7? { (-0.79 > 0.69) Mistake. The best move was b6. } (13... b6 14. b4 bxc5 15. bxc5 Rb8 16. h4 Bf6 17. h5 O-O 18. h6 g6 19. Rb1 Rxb1 20. Ndxb1 Be8 21. Nd2 Bf7 22. Qa4 Qd7 23. Nc4) 14. h4?! { (0.69 > -0.16) Inaccuracy. The best move was Nd5. } (14. Nd5 Qd8 15. Nxc7+ Qxc7 16. Qh5+ g6 17. Qxg5 b6 18. b4 bxc5 19. bxc5 O-O 20. Nc4 Be6 21. Nd6 Rab8 22. Bd2 Na5 23. O-O Nc4) 14... Bxh4? { (-0.16 > 2.25) Mistake. The best move was Bf6. } (14... Bf6 15. Nd5 Qd8 16. Qb3 b6 17. Qc4 b5 18. Qa2 a5 19. Nf4 Ne7 20. h5 a4 21. Rg1 Qc8 22. b4 axb3 23. Qxb3 Bc6) 15. Nd5? { (2.25 > -0.06) Mistake. The best move was Qh5+. } (15. Qh5+ g6 16. Qxh4 Qxh4 17. Rxh4 h5 18. f4 O-O-O 19. b4 Kb8 20. Bb2 Ne7 21. Kf2 Be6 22. b5 Rhf8 23. Rhh1 Rh8 24. Rag1 h4) 15... Qd8? { (-0.06 > 2.13) Mistake. The best move was Qg5. } (15... Qg5 16. Rxh4 Qxh4 17. Nxc7+ Ke7 18. Nxa8 Rxa8 19. Qb3 Rd8 20. Qxb7 f4 21. Nf1 Kf8 22. Bd2 Qf6 23. d5) 16. Qh5+ g6 17. Qxh4 Be6 18. Qxd8+ Rxd8? { (2.89 > 3.96) Mistake. The best move was Kxd8. } (18... Kxd8 19. Nf4 Bf7 20. d5 Ne7 21. b4 h5 22. Bb2 Re8 23. Rd1 Nxd5 24. Nxd5 Bxd5 25. Nxe4 Rxe4 26. Rxd5+ Ke7 27. Ke2 Rc4 28. Kd3) 19. Nf4? { (3.96 > 2.43) Mistake. The best move was Nxc7+. } (19. Nxc7+ Kd7 20. Nxe6 Kxe6 21. b4 h5 22. Bb2 Kd5 23. Ke2 h4 24. f3 exf3+ 25. Nxf3 h3 26. Ng5 h2 27. Nf7 Rh3 28. Nxd8 Nxd8) 19... Bf7 20. b3 O-O 21. d5?! { (2.36 > 1.57) Inaccuracy. The best move was Bb2. } (21. Bb2 Ne7 22. Ke2 Nd5 23. Nxd5 Bxd5 24. Rh6 Kg7 25. Rah1 Rh8 26. Nc4 b5 27. Ne5 Bxb3 28. d5 Bxd5) 21... Ne5 22. Bb2 Nd3+ 23. Nxd3 exd3 24. O-O-O Bxd5 25. Rhe1 Rfe8 26. Bd4 Kf7 27. Kb2 g5 28. f3 Re6 29. e4 Rde8? { (1.42 > 4.26) Mistake. The best move was Bc6. } (29... Bc6 30. Kc3 fxe4 31. Nxe4 Kg6 32. Rxd3 Rde8 33. Rg1 h6 34. Re3 Bd5 35. Rg4 Kf5 36. Rg2 Kg6 37. Rg1 Bc6 38. Kd3 Bb5+ 39. Kd2) 30. e5? { (4.26 > 1.31) Mistake. The best move was Rh1. } (30. Rh1 fxe4 31. Rxh7+ Kg6 32. Rg7+ Kf5 33. fxe4+ Rxe4 34. Nxe4 Rxe4 35. Rxd3 c6 36. Rxb7 g4 37. Rxa7 g3 38. Rxg3 Rxd4 39. a4 Rb4) 30... Rh6 31. Nf1? { (1.43 > 0.23) Mistake. The best move was Re3. } (31. Re3 g4 32. fxg4 fxg4 33. Ne4 Ke6 34. Kc3 Bxe4 35. Rxe4 Rg8 36. Kxd3 Rh3+ 37. Re3 Rxe3+ 38. Kxe3 g3 39. Rg1 g2 40. Kf3 Rd8) 31... Bxf3 32. Rxd3 Be4 33. Rd2 Rh3 34. Re3?! { (-0.06 > -0.67) Inaccuracy. The best move was Ne3. } (34. Ne3 h5 35. Nd1 Bc6 36. Nf2 Rg3 37. Nd3 h4 38. e6+ Rxe6 39. Ne5+ Kf8 40. Bf2 Rh3 41. Rd8+ Ke7) 34... Rh1? { (-0.67 > 1.72) Mistake. The best move was Rxe3. } (34... Rxe3 35. Nxe3 h5 36. Rh2 Kg6 37. Nc4 f4 38. Kc3 Bd5 39. Rf2 h4 40. Kd3 h3 41. c6 Bxc6) 35. Re1? { (1.72 > -0.71) Mistake. The best move was Ng3. } (35. Ng3 f4 36. Rxe4 fxg3 37. Rg4 h5 38. Rxg3 g4 39. c6 bxc6 40. Bxa7 Rxe5 41. a4 Rd5 42. Rf2+ Ke6 43. Bb8 Re1) 35... Re6?! { (-0.71 > -0.20) Inaccuracy. The best move was h5. } (35... h5 36. Rf2 Ke6 37. c6 bxc6 38. Re3 h4 39. Nd2 Bd5 40. Nf3 Bxf3) 36. Rde2 Bd3 37. Rf2 Reh6? { (-0.12 > 1.23) Mistake. The best move was f4. } (37... f4 38. Rd1 Bf5 39. Bc3 h5 40. Rd7+ Re7 41. Rd8 Re8 42. Rd5 Kg6 43. Rd4) 38. Rxf5+?? { (1.23 > -4.58) Blunder. The best move was Rf3. } (38. Rf3 R6h3 39. Rxh3 Rxh3 40. e6+ Ke7 41. c6 bxc6 42. Bf6+) 38... Bxf5 39. Ng3?? { (-4.55 > -10.63) Blunder. The best move was Rc1. } (39. Rc1 Bd3 40. Nd2 Rxc1 41. Kxc1 g4 42. b4 Rh1+ 43. Kb2 Ke6 44. a4 Rh3 45. c6 b6 46. b5) 39... Be6?? { (-10.63 > 1.19) Blunder. The best move was Rxe1. } (39... Rxe1 40. Nxf5 Rh3 41. a4 Ke6 42. Ng7+ Kd5 43. Nf5 Re2+ 44. Ka3 Rf3 45. c6 b6 46. Ng7 Kxd4 47. Ne6+ Kxe5 48. Nxg5 Rd3 49. a5) 40. Re2?? { (1.19 > -4.43) Blunder. The best move was Nxh1. } (40. Nxh1 Rh3 41. Be3 g4 42. Nf2 Rf3 43. Kc3 h5 44. Kd4 b6 45. Ne4 Kg6 46. b4 h4 47. Rh1 h3 48. Ng5 bxc5+) 40... R1h3 41. Rf2+ Kg6?! { (-4.44 > -3.91) Inaccuracy. The best move was Ke8. } (41... Ke8 42. Rf3 R6h4 43. Bc3 Rh2+ 44. Kb1 Bxb3 45. Nf1 R2h3 46. Ng3 Rf4 47. Re3 Kd7 48. Bb4 Bc4 49. c6+) 42. Rg2? { (-3.91 > -5.73) Mistake. The best move was Rf6+. } (42. Rf6+ Kg7 43. Rf3 Rh2+ 44. Kc3 R6h3 45. Re3 g4 46. a4 h5 47. c6 b6 48. Rd3 h4 49. Nh5+ Kf7 50. Be3) 42... R6h4 43. Bc3 Rg4 44. Be1 h5 45. Rf2 Rgxg3? { (-6.63 > -3.77) Mistake. The best move was Rf4. } (45... Rf4 46. Rg2 h4 47. Ne2 Rxb3+ 48. Kc2 Rc4+ 49. Kxb3 Rg4+ 50. Kc3 Rxg2) 46. Rf6+ Kg7 47. Bxg3 Bxb3?! { (-3.48 > -2.62) Inaccuracy. The best move was Rxg3. } (47... Rxg3 48. Rxe6 h4 49. Re7+ Kg6 50. Rxc7 h3 51. Rc8 Re3 52. Rg8+ Kf5 53. e6 Rxe6) 48. Be1 Bd5 49. Bc3 Kg8? { (-3.01 > -0.60) Mistake. The best move was g4. } (49... g4 50. e6 Rxc3 51. Rf7+ Kg6 52. Kxc3 g3 53. Rf1 Bxe6 54. Kd4 h4 55. Ke5 Bd7 56. Kf4 g2 57. Re1 Kf6 58. Kf3 h3) 50. e6 Re3 51. Rg6+ Kf8 52. Bf6? { (-0.29 > -2.46) Mistake. The best move was c6. } (52. c6 a5 53. Bxa5 Rb3+ 54. Kc2 g4 55. Rg5 bxc6 56. Bb4+ Rxb4 57. axb4 Ke7 58. Kd3 Kxe6 59. Ke3 Kf6 60. Rxh5 g3 61. Rh6+ Kg5) 52... Rxe6?! { (-2.46 > -1.86) Inaccuracy. The best move was g4. } (52... g4 53. Rg5 Rxe6 54. Bd4 Re2+ 55. Kc1 Bf7 56. Bg7+ Ke7 57. Re5+ Rxe5 58. Bxe5 h4 59. Bf4 Ke6 60. Bg5 h3 61. Bf4 c6 62. Kd2) 53. Bg7+ Kf7 54. Rxg5 h4 55. Bc3? { (-1.84 > -3.09) Mistake. The best move was Bd4. } (55. Bd4 Re2+) 55... h3? { (-3.09 > -0.23) Mistake. The best move was Re2+. } (55... Re2+ 56. Kc1 Be4 57. Kd1 Ra2 58. Re5 Bg6 59. Re1 h3 60. Rf1+ Ke7 61. Rh1 Bf5 62. Be5 c6 63. Rh2 Rxa3 64. Bb8 a5 65. Rb2) 56. Rxd5 h2 57. Rd1 Re2+ 58. Bd2?? { (-0.26 > -6.88) Blunder. The best move was Kb3. } (58. Kb3 Ke6 59. Kc4 Re4+ 60. Bd4 Rh4 61. Rh1 b6 62. a4 bxc5 63. Kxc5 a6 64. Bf2 Rh3 65. Kd4 Kf5 66. Be1 Kf4 67. Bd2+ Kf3) 58... Rxd2+ 59. Rxd2 h1=Q 60. Rf2+ Ke7 61. Re2+ Kd7 62. Rd2+ Kc6 { White resigns } 0-1

Santiago (970) vs Camilo (983)

Shortest game so far, which left us time to play a king of the hill variation (which Camilo won, against Fabrice, by checkmate on a too daring king).

[Event "Casual game"] [Site "http://lichess.org/qUdBR5TC"] [Date "2015.03.10"] [White "Santiago"] [Black "Camilo"] [Result "1-0"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "11"] [Variant "Standard"] [TimeControl "-"] [ECO "B00"] [Opening "St. George Defense, General"] [Annotator "lichess.org"] 1. e4 a6 { St. George Defense, General } 2. Qf3?! { (0.54 > -0.31) Inaccuracy. The best move was d4. } (2. d4 e6 3. Nf3 d5 4. Nc3 Bb4 5. exd5 exd5 6. a3 Bxc3+ 7. bxc3 Nc6 8. Bd3 Qe7+ 9. Qe2 Qxe2+ 10. Kxe2) 2... g6?! { (-0.31 > 0.28) Inaccuracy. The best move was Nc6. } (2... Nc6 3. Qg3 e6 4. Nf3 d5 5. d3 dxe4 6. dxe4 Nb4 7. Na3 Nf6 8. Qh4) 3. Bc4 Nf6 4. Nc3 Bh6? { (-0.04 > 1.27) Mistake. The best move was Nc6. } (4... Nc6 5. d3 Ne5 6. Qe3 Nxc4 7. dxc4 d6 8. Nge2 Bg7 9. f3 e5 10. O-O O-O 11. a4 Be6 12. b3 Re8 13. Nd5 c6 14. Nxf6+) 5. e5 Nh5?? { (1.36 > Mate in 1) Checkmate is now unavoidable. The best move was d5. } (5... d5 6. Nxd5 Nxd5 7. Bxd5 O-O 8. Bxb7 Bxb7 9. Qxb7 Nd7 10. Nf3 Bg7 11. d4 c5 12. c3 Qc8 13. Qxc8 Rfxc8 14. b3 cxd4 15. cxd4) 6. Qxf7# { Black is checkmated } 1-0

Santiago (987) vs Pablo (941)

In a raging fury against our Colombian community, Santiago proceeds to calmly walk his way back up the ladder of the tournament, methodically resisting the attacks of White who, in their traditional style, succumb to their own pressure and split out to surrender their queen on an otherwise leading position. The shat queen moment—this move of the game where Juan Pablo becomes chess-blind and positions his dame in front of a pawn, bishop or right below the roofs of a knight—occurred here on the (Friday the) 13th move. It was then just a matter of carefully moving the heavy Black artillery left around, with little but enough time left to enforce checkmate. Playing with psychology on his side, Santiago allowed himself the occasional glance through the window, à la Bobby, which was a nice touch.

[Event "Casual game"] [Site "http://lichess.org/vy7l3JxH"] [Date "2015.03.11"] [White "Pablo"] [Black "Santiago"] [Result "0-1"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "66"] [Variant "Standard"] [TimeControl "-"] [ECO "D20"] [Opening "Queen's Gambit Accepted, Old Variation"] [Annotator "lichess.org"] 1. d4 d5 2. c4 dxc4 3. e3 { Queen's Gambit Accepted, Old Variation } Nc6 4. Bxc4 Nf6 5. Nf3 e6 6. Nc3 Nb4 7. Ne5?! { (1.12 > 0.61) Inaccuracy. The best move was e4. } (7. e4 Be7 8. a3 Nc6 9. O-O O-O 10. b4 a6 11. Be3 Ng4 12. Bf4 b5) 7... c6 8. O-O b5 9. Bb3 Nfd5? { (1.15 > 2.16) Mistake. The best move was a6. } (9... a6 10. e4 c5 11. a3 Qxd4 12. Bf4 Nbd5 13. Qxd4 cxd4 14. Nxd5 exd5 15. exd5 Nh5) 10. Qf3 f6? { (2.01 > 4.08) Mistake. The best move was Qf6. } (10... Qf6 11. Qe2 Bb7 12. Nxb5 Qe7 13. Na3 f6 14. Nec4 Ba6 15. Bd2 Rd8 16. Nc2 Qf7) 11. e4?? { (4.08 > 0.86) Blunder. The best move was Qh5+. } (11. Qh5+ g6 12. Nxg6 hxg6 13. Qxh8 f5 14. a4 bxa4 15. Nxa4 Na6 16. Qh3 Qe7 17. Nc3 Nab4 18. e4 fxe4 19. Qg3 Qf7 20. Bg5 Ba6) 11... Nb6?? { (0.86 > 4.72) Blunder. The best move was Nxc3. } (11... Nxc3 12. bxc3 fxe5 13. Qh5+ g6 14. Qxe5 Rg8 15. cxb4 Bd6 16. Qg5 Qxg5 17. Bxg5 Bxb4 18. Rfc1 Bd7 19. d5 cxd5 20. exd5 e5 21. a4) 12. Nd3?? { (4.72 > 1.06) Blunder. The best move was Qh5+. } (12. Qh5+ g6 13. Nxg6 hxg6 14. Qxh8 Qe7 15. a4 Nd3 16. axb5 c5 17. Bh6 c4 18. Bd1 Bb7 19. b3 cxb3 20. Bxb3 Rc8 21. Qg8 Rxc3) 12... f5? { (1.06 > 4.03) Mistake. The best move was Nxd3. } (12... Nxd3 13. Qxd3 Bd6 14. a4 b4 15. Ne2 a5 16. Bf4 O-O 17. Qg3 Bxf4 18. Nxf4 Qe7 19. Rfc1 Bd7 20. Nd3 f5 21. Ne5 fxe4 22. Bc2) 13. e5?? { (4.03 > 0.60) Blunder. The best move was exf5. } (13. exf5 Nxd3 14. fxe6 Qc7 15. Qxd3 Bb7 16. Qf5 g6 17. Qf7+ Qxf7 18. exf7+ Kd7 19. Re1 Nd5 20. Bd2 Bd6 21. Bxd5 cxd5 22. Nxb5 Be7) 13... Qxd4?! { (0.60 > 1.43) Inaccuracy. The best move was Nxd3. } (13... Nxd3 14. Qxd3 Be7 15. a4 b4 16. a5 Nd5 17. Ne2 Bd7 18. Bd2 O-O 19. Rfc1 g5 20. Ng3 Rc8 21. Nh5 Kh8 22. Nf6 Bxf6 23. Bxd5) 14. Qxc6+?? { (1.43 > -8.44) Blunder. The best move was Nf4. } (14. Nf4 Qxe5 15. Qd1 N6d5 16. Ncxd5 exd5) 14... Nxc6 15. Rd1?! { (-8.32 > -8.84) Inaccuracy. The best move was Be3. } (15. Be3 Qd7 16. Nf4 Nd8 17. Rfd1 Qc6 18. Rac1 Bb7 19. a4 bxa4 20. Ncd5) 15... b4? { (-8.84 > -7.64) Mistake. The best move was Qd7. } (15... Qd7 16. Nf4 Qc7 17. Bxe6 Qxe5 18. Bb3 b4 19. Nfd5 Nxd5 20. Nxd5 Nd4 21. f4 Qe4 22. Nc7+ Kd8 23. Nxa8) 16. Be3 Qd7 17. Nc5 Qe7?! { (-8.15 > -7.23) Inaccuracy. The best move was Qc7. } (17... Qc7 18. Nb5 Qxe5 19. Rac1 a6 20. Nd4 Na5 21. Ndxe6 Nxb3 22. axb3 Bxe6 23. Bd4 Qb8 24. Nxe6 Nd5 25. Bxg7 Bxg7 26. Rxd5 Kf7 27. Re1) 18. Nxe6? { (-7.23 > -11.75) Mistake. The best move was Nb5. } (18. Nb5 Nxe5 19. Nxe6 Bxe6 20. Bxe6 Qb7 21. Bf4 a6 22. Bxf5 axb5 23. Re1 Bd6 24. Bxe5 Bxe5 25. Rxe5+ Kf7 26. Be4 Qd7 27. Bxa8 Rxa8) 18... Bxe6 19. Ba4 bxc3 20. bxc3 Qc7 21. Rd2 Nxa4 22. h3 Nxc3 23. Rd3 Ne2+ 24. Kh1 Qxe5 25. g3?! { (-24.58 > Mate in 7) Checkmate is now unavoidable. The best move was Re1. } (25. Re1 Bc4 26. Rd2 f4 27. Rdxe2 Bxe2 28. Bxf4 Qxf4 29. Rxe2+ Be7 30. Re6) 25... Qxa1+ 26. Kg2 Qg1+ 27. Kf3 Ne5+?! { (Mate in 5 > Mate in 6) Not the best checkmate sequence. The best move was Qf1. } (27... Qf1 28. Rd8+ Rxd8 29. Bd4 Nexd4+ 30. Ke3 Qe2+ 31. Kf4 Qd2#) 28. Kxe2 Bc4 29. Kd2 Bb4+ 30. Kc2 Bxd3+ 31. Kb3 Qb1+ 32. Ka4 Rb8?! { (Mate in 2 > Mate in 2) Not the best checkmate sequence. The best move was a6. } (32... a6 33. a3 Bc2#) 33. Bxa7 Bb5# { White is checkmated } 0-1

Camilo (966) vs David (999)

A game of tension, of tension going too far. First 10 moves or so have been slowly, carefully considered by both sides and getting the pot to almost boiling point. Then David blunders his queen away, 11. Bd3?? Even then, to strike mercilessly, Camilo took his time, and brought the heavy knight falling with all the weight of an actual horse on the square that meant defeat for our French contender. But there's nothing that you can do to vex David's attitude. He regarded this move as mere trifle, displaced his king and carried on with a face of steel. Time was still equal. But with time passing and nothing to loose, it was easy for Black to arrogantly pretend they could still play, and with the face of conquest, advance a minuscule little pawn towards recovering the wasted queen. White started to play faster (which is good) and with too much confidence (which is not), with some irrational fixation on delivering check. See 22. Qc4+?, letting the knight go away. At this point, or not too far, a girl who popped out of nowhere tried to get under the table to reach something below Camilo's bench. Upon inquiry, and thankfully, it turned out to be only for a coin that rolled all the way from the vending machine to our competitor. We had to pay the girl to go away. Too late. On 26th move, the blunder of the day changed the game's fate. In a mate-in-5 position, when everybody started to relax and think about the coin below the bench, Camilo spin out of control: first sacrifice of a bishop, 26. Bxa6+? then throwing the queen in its wake, 27 Qxa6+?? The move was stopped in mid-air, in a frozen time and space with only a resounding "too late, too late" from David, detonating in a cafetaria getting a moment's interest into an apparent scandal. Then in time trouble, psychologically ruined, pursuing illusory checkmates through pointless checks, only defeat could follow for White, who lost on time.

[Event "Casual game"] [Site "http://lichess.org/IqngdbuX"] [Date "2015.03.12"] [White "Camilo"] [Black "David"] [Result "0-1"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "82"] [Variant "Standard"] [TimeControl "-"] [ECO "B23"] [Opening "Sicilian Defense, Closed Variation"] [Annotator "lichess.org"] 1. e4 c5 2. Nc3 { Sicilian Defense, Closed Variation } d6 3. Nf3 e5 4. h3 Nc6 5. Bc4 Na5 6. b3 h5 7. g3 g6 8. Nh4 Qe7 9. Nd5 Qd7 10. Qf3 b5? { (0.25 > 2.00) Mistake. The best move was Nxc4. } (10... Nxc4 11. bxc4 b6 12. a4 Bb7 13. d3 Rc8 14. Kf1 Bxd5 15. cxd5 Be7 16. Bd2 Qd8 17. Kg2 Bxh4 18. gxh4 Qxh4 19. a5 Nf6 20. axb6) 11. Bd3? { (2.00 > 0.69) Mistake. The best move was Bxb5. } (11. Bxb5 Nc6 12. d3 Qb7 13. Bg5 Be6 14. Ba4 Bh6 15. Bf6 Rh7 16. c3 Qd7 17. b4 cxb4 18. Nxb4 Rc8 19. Nxc6 Rxc6 20. O-O Nxf6) 11... Ne7?? { (0.69 > 8.92) Blunder. The best move was Rb8. } (11... Rb8 12. a4 bxa4 13. Rxa4 Nc6 14. Bc4 Nd4 15. Qd1 Bg7 16. c3 Ne6 17. Qf3 Ng5 18. Qe3 Ne6 19. f4 Nc7 20. Nf3 Nxd5 21. exd5) 12. Nf6+ Kd8 13. Nxd7 Bxd7 14. Qf6? { (9.13 > 7.81) Mistake. The best move was Qxf7. } (14. Qxf7 Kc7 15. f4 Nac6 16. Bxb5 Be8 17. Qc4 a6 18. Bxc6 Nxc6 19. Bb2 Bg7 20. Nf3 Rf8 21. Ng5 Bd7 22. Nf7 Nb4 23. O-O-O Rac8) 14... Rh6? { (7.81 > 8.95) Mistake. The best move was Rg8. } (14... Rg8 15. a4 bxa4 16. Qxd6 Ke8 17. Qxe5 Bg7 18. Qxc5 Bxa1 19. Qxa5 Bf6 20. bxa4 Rb8 21. Bc4 Rc8 22. d3 Nc6 23. Qd5 Be6 24. Qb5) 15. Qxf7 Kc7 16. b4? { (9.17 > 8.03) Mistake. The best move was f4. } (16. f4 exf4 17. gxf4 Re8 18. a4 bxa4 19. Bb2 Nb7 20. e5 Nd8 21. Qc4 Nf5) 16... cxb4 17. a3?! { (8.03 > 7.24) Inaccuracy. The best move was Bxb5. } (17. Bxb5 Bxb5 18. d4 Rh8 19. dxe5 dxe5 20. Qf6 Rg8 21. Qxe5+ Kb6 22. Be3+ Ka6 23. c4) 17... g5 18. Nf5 Bxf5?? { (6.67 > 12.07) Blunder. The best move was Be6. } (18... Be6 19. Nxh6 Bxf7 20. Nxf7 b3 21. Rb1 Nec6 22. Nxg5 Be7 23. h4 bxc2 24. Rxb5 Rc8 25. Bxc2 Nd4 26. Rb2 Nc4 27. Ra2 Na5 28. d3) 19. exf5 b3 20. Bxb5 bxc2 21. d3 Nb3 22. Qc4+ Nc5 23. O-O?! { (10.38 > 9.16) Inaccuracy. The best move was Bxg5. } (23. Bxg5 Rb8 24. f6 Nc6 25. Qf7+ Nd7 26. Bxc6 Kxc6 27. Ra2 Rb1+ 28. Ke2 Rxh1) 23... Nxf5?! { (9.16 > 9.99) Inaccuracy. The best move was a6. } (23... a6 24. Ba4 Nxf5 25. Bxg5 Rh7 26. Bxc2 Nd4 27. f4 Nxc2 28. Qxc2 Rg7 29. Rab1 Kd7) 24. Bd2 a6 25. Ba5+ Kc8?! { (14.70 > Mate in 5) Checkmate is now unavoidable. The best move was Kb8. } (25... Kb8 26. Qf7 Be7 27. Bd7 Ka7 28. Bxf5 Rb8 29. Qxe7+ Rb7 30. Qxg5 Rh8) 26. Bxa6+? { (Mate in 5 > 8.41) Lost forced checkmate sequence. The best move was Qf7. } (26. Qf7 Ne7 27. Qxf8+ Kb7 28. Qxe7+ Nd7 29. Qxd7+ Kb8 30. Qc7#) 26... Rxa6 27. Qxa6+?? { (8.32 > -2.74) Blunder. The best move was Qf7. } (27. Qf7 Rxa5 28. Qxf8+ Kc7 29. Qxf5 Ne6 30. Qf7+ Kb6 31. a4 Ra7 32. a5+ Rxa5 33. Qe7 Rxa1 34. Qxd6+ Kb5) 27... Nxa6 28. Rac1 Nd4 29. Bc3? { (-3.21 > -4.85) Mistake. The best move was Rxc2+. } (29. Rxc2+ Nxc2 30. Rc1 Nc5 31. Rxc2 Kd7 32. Rc3 Bg7 33. Rc1 Rf6 34. Bb6 Kc6 35. Bd8 Rf3 36. a4 Rxd3 37. Bxg5 Kd5 38. a5 e4) 29... Nc5?? { (-4.85 > -1.00) Blunder. The best move was Ne2+. } (29... Ne2+ 30. Kg2 Nxc1 31. Rxc1 d5 32. Bxe5 Rc6 33. Bb2 g4 34. hxg4 hxg4 35. d4 Bh6 36. Rh1 c1=B 37. Bxc1 Bxc1 38. Rh8+ Kb7 39. Rh4) 30. Rfe1?? { (-1.00 > -4.26) Blunder. The best move was Bxd4. } (30. Bxd4 exd4 31. Rxc2 Kd7 32. a4 Bg7 33. a5 Nxd3 34. a6 Rh8 35. Ra2 Ra8 36. a7 Nc5 37. f4 gxf4 38. Kg2 Kc6 39. gxf4 d3) 30... Nxd3 31. Rxc2?? { (-4.32 > -8.34) Blunder. The best move was Bxd4. } (31. Bxd4 Nxe1 32. Kf1 exd4 33. Kxe1 h4 34. Rxc2+ Kd7 35. g4 Rf6 36. Ke2 d5 37. a4 d3+ 38. Kxd3 Rf3+ 39. Ke2 Rxh3 40. Ra2 Bc5) 31... Nxe1 32. Rb2 Ndf3+?! { (-8.44 > -7.48) Inaccuracy. The best move was Nef3+. } (32... Nef3+ 33. Kg2 d5 34. a4 Rc6 35. Bxd4 Nxd4 36. Ra2 Ra6 37. f3 Bb4 38. Ra1 Kd7 39. Ra2) 33. Kh1? { (-7.48 > -8.77) Mistake. The best move was Kf1. } (33. Kf1 Nd3 34. Rb5 e4 35. Ra5 Be7 36. Ke2 Bf6 37. Bxf6 Rxf6 38. Ke3 Nfe5 39. Kxe4 Nxf2+ 40. Kd5 Rf3 41. Ra6 Rd3+ 42. Ke6 Ne4) 33... e4?! { (-8.77 > -7.91) Inaccuracy. The best move was Nd3. } (33... Nd3 34. Rc2 Kb7 35. Bb4 Nxb4 36. axb4 d5 37. Rb2 e4 38. Rb1 Rb6 39. b5 Nd4 40. Kg2 Bc5 41. g4 h4 42. Ra1 Rxb5 43. Rc1) 34. Rb6?! { (-7.91 > -8.73) Inaccuracy. The best move was Bxe1. } (34. Bxe1 Nxe1 35. Re2 Nd3 36. f3 d5 37. fxe4 dxe4 38. Kg1 Re6 39. a4 Kd7 40. Ra2) 34... g4 35. Rc6+? { (-8.73 > -14.69) Mistake. The best move was Bxe1. } (35. Bxe1 Nxe1 36. Rb5 Bg7 37. Kh2 Bd4 38. Rf5 Nf3+ 39. Kg2 gxh3+ 40. Kxh3 Bxf2 41. Kg2 Bd4 42. Rf4 d5 43. Rf5 Be5 44. Kf2 Kd7) 35... Kd7 36. Ra6 gxh3 37. Ba5 Ke7 38. Ra8 Bg7?! { (-21.45 > -9.34) Inaccuracy. The best move was Nd3. } (38... Nd3 39. Ra7+ Ke6 40. Bb6 d5 41. a4 d4 42. Bxd4 Nxd4 43. Ra6+ Bd6 44. Kh2 Nxf2 45. Kg1 e3 46. a5) 39. Bd8+?! { (-9.34 > -18.72) Inaccuracy. The best move was Bxe1. } (39. Bxe1 Nxe1 40. Ra4 d5 41. Ra7+ Kf8 42. Ra8+ Kf7 43. Ra7+ Kg6 44. Kh2 Nd3 45. Kxh3 Nxf2+ 46. Kg2 Ng4 47. a4 Be5 48. Ra8 Kf5) 39... Ke6 40. Ra7?! { (-16.50 > Mate in 13) Checkmate is now unavoidable. The best move was Bb6. } (40. Bb6 Nd3 41. Rc8 d5 42. Rc2 Kf5 43. Be3 Ra6 44. Rd2 Nxd2 45. Bxd2 Nxf2+ 46. Kg1 Ng4 47. Bb4 Bd4+ 48. Kf1 Bf2 49. Be7 Bxg3) 40... Bd4 41. Re7+ Kd5 { White resigns } 0-1

Fabrice (1089) vs Javier (1000)

We have a new player, Javier, also the strongest one (playing in a club), so this is great news for our competition. Javier enters with the provisional rating rules, so his rating changes a lot, sinking to 964 as he lost the game, while Fabrice's (yours truly, writing this comment) changes little, winning only 2 points in what was the most difficult game so far. Actually the game was a win for Black, who had a mate position in move 31. Qg4# Chess being a game where a single mistake can overturn everything, since 31. g6+?? was played instead, a Berezina was turned into a Campo Formio. A mate had been announced, and as I had seen the mate with queen, I accepted the claim as valid, but the Referee (Pablo) observed this was not checkmate, so the game carried on, and after forcing the exchange of queens, Black was in the mental despair situation and did not try to fight against the rook. A careless knight move led to his capture on discovering a check, and Black resigned. This is a victory from a lost game. But aren't many victories like that? (especially when involving French players?) Like this, everybody's a winner: the good chess player, who loses on a blunder and the loser, who wins as a patzer. To make things worst, on move 15. a super-castling 15. O-O-O-O was attempted, conveniently getting the king on d1, but of course the referee objected, and everybody laughed his ass off, not letting me add another quantum move up my sleeve of illegal tricks. Still, the game continued.

The main feature of the game as far as I am concerned is my move 7. c3?? which the audience took for what it was: a blunder, but assuming a stupid oversight, while it was really a gambit. Which one? This is the variation I had in mind (you can play it in the game below as the 2nd variation):

7. Nh2 h6xg5 (opening the column)

8. h4xg5 (menacing to take back the sacrificed piece)

The knight has ultimately to move, leaving the Black king naked to an attack from the White queen supported by the king's bishop, and pinned by the White king's bishop. This leads to aggressive attack that, in time battle, may be worth the small loss in material. I'm fairly sure in the queenside castle of Black, this provides an actual advantage (my experience is that strong players tend to reject this gambit). Here, though, the knight was in the way, Javier is a good player, so he had time to develop his pieces to turn this hurried and lame attack into a sound counter-attack. In fact, even if I hadn't shat the horse in the middle, this was a mistake, since, so the computer analyzes:

8. ... d5 (exchanging knight for bishop)

9. Bb3 (holding the pin) Nh7 (keeping the knight)

10. g6

The queen still looks dangerous but the analysis shows that it's still better for Black.

[Event "Casual game"] [Site "http://lichess.org/JWRKY56p"] [Date "2015.03.13"] [White "Fabrice"] [Black "Javier"] [Result "1-0"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "71"] [Variant "Standard"] [TimeControl "15-0"] [ECO "C55"] [Opening "Italian Game, Two Knights Defense, Modern Bishop's Opening"] [Annotator "lichess.org+Fabrice variation"] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 { Italian Game, Two Knights Defense, Modern Bishop's Opening } Bc5 5. Bg5 O-O 6. h4 h6 7. c3? { (-0.52 > -2.58) Mistake. The best move was Bxf6. } (7. Bxf6 Qxf6 8. Nc3 Ne7 9. Na4 Bd6 10. Nc3 c6 11. Bb3 Bc5 12. Na4 Bb4+ 13. c3 Ba5 14. d4 d6 15. O-O exd4 16. Qxd4) {Fabrice: What I had in mind} (7. Nh2 h6xg5 8. h4xg5 d5 9. Bb3 Nh7 10. g6) 7... hxg5 8. hxg5 Ng4 9. Qd2? { (-2.39 > -4.50) Mistake. The best move was d4. } (9. d4 exd4 10. g6 Qf6 11. gxf7+ Rxf7 12. O-O d6 13. Qb3 Nge5 14. Bxf7+ Nxf7 15. a4 d3 16. Nbd2 Qh6 17. Rad1) 9... Bxf2+ 10. Kf1 Be3 11. Qe2 d6?! { (-4.51 > -3.52) Inaccuracy. The best move was Bxg5. } (11... Bxg5 12. Nxg5 Qxg5 13. Qd2 Qxd2 14. Nxd2 Ne3+ 15. Kg1 Nxc4 16. Nxc4 d6 17. Ne3 Be6 18. g4 g6 19. Kf2 Kg7 20. a4 f6 21. b4) 12. Nfd2? { (-3.52 > -6.33) Mistake. The best move was g6. } (12. g6 Qf6 13. gxf7+ Rxf7 14. Bxf7+ Qxf7 15. Nd2 Be6 16. Ke1 b5 17. Kd1 Bh6 18. a3 Rf8 19. Kc2 Ne3+ 20. Kb1 Qg6 21. Nh4 Qg3) 12... Be6? { (-6.33 > -4.64) Mistake. The best move was Qxg5. } (12... Qxg5 13. Nf3 Qf4 14. Na3 Bb6 15. Nc2 Be6 16. Rh3 Bxc4 17. g3 Bxd3 18. Qxd3 Qf6 19. Qe2 Rad8 20. Rh4 Qg6 21. Kg2 f5 22. exf5) 13. Qf3? { (-4.64 > -6.16) Mistake. The best move was Rh4. } (13. Rh4 Bxd2 14. Nxd2 Qxg5 15. Nf3 Qf4 16. Bb3 Bxb3 17. axb3 f5 18. Kg1 a6 19. Re1 Rf6 20. exf5 Rxf5 21. Qe4 Qxe4 22. dxe4 Rf4) 13... Bxd2? { (-6.16 > -4.80) Mistake. The best move was Bxg5. } (13... Bxg5 14. a4 Bh6 15. Kg1 Qg5 16. Rh3 Bxc4 17. Nxc4 Qc1+ 18. Qf1 Qxf1+ 19. Kxf1 f5 20. exf5 Rxf5+ 21. Ke1 d5 22. Rf3 Rxf3 23. gxf3) 14. Nxd2 Qxg5 15. Re1?? { (-4.70 > -9.04) Blunder. The best move was Ke2. } (15. Ke2 Ne3 16. Qxe3 Qxg2+ 17. Qf2 Nd4+ 18. cxd4 Bg4+ 19. Ke1 Qxh1+ 20. Nf1 exd4 21. Kd2 b5 22. Bb3 a5 23. Bd1 Be6 24. Nh2 d5) 15... Bxc4?? { (-9.04 > -4.97) Blunder. The best move was Qxd2. } (15... Qxd2 16. Qe2 Qf4+ 17. Kg1 Bxc4 18. dxc4 f5 19. Rh5 Ne7 20. exf5 Nxf5 21. Qf3 Nfe3 22. Qxf4 Rxf4 23. Rh3 Nxc4) 16. Nxc4 f5 17. Qh3 fxe4+ 18. Kg1 Nh6?! { (-5.79 > -5.17) Inaccuracy. The best move was exd3. } (18... exd3 19. Qxd3 Qf5 20. Qxf5 Rxf5 21. Rh4 Nf6 22. g3 Nd5 23. Re2 Raf8 24. Nd2) 19. Rxe4 Rf4 20. Re3? { (-4.97 > -6.10) Mistake. The best move was Qh5. } (20. Qh5 Qxh5 21. Rxh5 Rxe4 22. dxe4 Ng4 23. Rg5 Nf6 24. Nd2 Kf7 25. Rg3 Rh8 26. Rh3 Rxh3 27. gxh3 Nd8 28. Kf2 Ne6 29. Ke3) 20... Raf8 21. Rg3 Rf1+ 22. Kh2 Rxh1+ 23. Kxh1 Qc1+ 24. Kh2 Rf1 25. Qe6+ Nf7 26. Qe8+? { (-8.41 > -12.96) Mistake. The best move was Rf3. } (26. Rf3 Rh1+ 27. Kg3 Nd8 28. Qg4 Qe1+ 29. Rf2 d5 30. Na3 Qe3+ 31. Rf3 Qh6 32. Rxf7 Kxf7 33. Qd7+ Kg6 34. Qg4+ Kh7 35. Nc2 Ne6) 26... Kh7 27. Rh3+ Nh6 28. Ne3?! { (-12.96 > Mate in 4) Checkmate is now unavoidable. The best move was Nd2. } (28. Nd2 Rh1+ 29. Kg3 Qe1+ 30. Kf3 Rxh3+ 31. gxh3 Qxd2 32. a4 Qxd3+ 33. Kg2 Qc2+ 34. Kf1 Qxb2 35. Qf8 Qb1+ 36. Kg2 Nf5 37. Qf7 Qe4+) 28... Rh1+ 29. Kg3 Qxe3+ 30. Kh4 Qf4+ 31. Kh5 g6+?? { (Mate in 1 > -1.24) Lost forced checkmate sequence. The best move was Qg4#. } (31... Qg4#) 32. Qxg6+ Kh8 33. Rxh1 Ne7?? { (-1.24 > 3.18) Blunder. The best move was Nf5. } (33... Nf5 34. Qf6+ Kg8 35. Qg5+ Qxg5+ 36. Kxg5 Ne3 37. g3 Kg7 38. Re1 Nd5 39. Kf5 Nb6 40. Rd1 Na4 41. d4 exd4 42. cxd4 Nxb2 43. Rb1) 34. Qxh6+ Qxh6+ 35. Kxh6 Nf5+?? { (3.09 > 9.49) Blunder. The best move was Kg8. } (35... Kg8 36. g4 a6 37. g5 Nf5+ 38. Kg6 Ne7+ 39. Kf6 Nd5+ 40. Kf5 Kg7 41. c4 Ne7+ 42. Ke6 Ng6 43. Kd7 Nf4 44. Rd1 Kg6 45. Kxc7) 36. Kg5+ { Black resigns } 1-0

Stefan (1005) vs Amir (1000)

Another new player, Amir Rahmani, joined the tournament to defend the colors of Isfahan against Stefan who took a bye from our club player till Wednesday. A strange opening and a dangerous unconvering of the king-side let Stefan, who was mentally and physically preparing himself to destroy Javier, have an easy win. Tomorrow, Amir vs Juan Pablo. Bets are opened. Will the "shat queen" get in the way of another assured victory? Or will Amir toy again with irregular openings?

[Event "Casual game"] [Site "http://lichess.org/l512MF3w"] [Date "2015.03.16"] [White "Stefan"] [Black "Amir"] [Result "1-0"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "27"] [Variant "Standard"] [TimeControl "-"] [ECO "B10"] [Opening "Caro-Kann Defense, General"] [Annotator "lichess.org"] 1. e4 c6 { Caro-Kann Defense, General } 2. d4 f6?! { (0.44 > 1.33) Inaccuracy. The best move was d5. } (2... d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Nd7 6. O-O) 3. Nc3 Nh6? { (1.25 > 4.12) Mistake. The best move was d6. } (3... d6 4. Nf3 e5 5. Bc4 b5 6. Bb3 Qc7 7. O-O Ne7 8. dxe5 dxe5 9. Be3 Nd7 10. a4) 4. Nh3?? { (4.12 > 0.80) Blunder. The best move was Bxh6. } (4. Bxh6 d5 5. Bf4 dxe4 6. Nxe4 Bf5 7. Qe2 e6 8. O-O-O Na6 9. g4 Bg6 10. Nf3 Nb4 11. Nc5 Qd5 12. Nxe6 Nxa2+ 13. Kb1) 4... e6? { (0.80 > 2.49) Mistake. The best move was Nf7. } (4... Nf7 5. Be2 e6 6. O-O d5 7. Nf4 e5 8. Nh5 g6 9. dxe5 gxh5 10. exd5 fxe5) 5. Bd3? { (2.49 > 0.85) Mistake. The best move was Bxh6. } (5. Bxh6 gxh6 6. Qh5+ Ke7 7. O-O-O Bg7 8. e5 d5 9. exd6+ Qxd6 10. Kb1 Kf8 11. g3 Qe7 12. Nf4 Qe8 13. Qh4 Qe7 14. Bh3 f5) 5... Bd6?? { (0.85 > 4.24) Blunder. The best move was Nf7. } (5... Nf7 6. O-O Na6 7. Be3 Be7 8. f4 O-O 9. Nf2 b5 10. e5 f5 11. a4 bxa4 12. Be2 Nb4 13. Rxa4 Bb7) 6. Bxh6 gxh6 7. Qh5+ Ke7?! { (3.75 > 4.45) Inaccuracy. The best move was Kf8. } (7... Kf8 8. e5 Be7 9. O-O-O d5 10. exd6 Bxd6 11. Ne4 Kg7 12. Be2 Qe7 13. Rd3 Rf8 14. Nxd6 Qxd6 15. Rg3+ Kh8 16. Qxh6 Rf7) 8. Qxh6? { (4.45 > 1.90) Mistake. The best move was e5. } (8. e5 fxe5 9. dxe5 Bc7 10. Ne4 Qf8 11. Qh4+ Ke8 12. Nf6+ Kf7 13. f4 Bd8 14. Qh5+ Ke7 15. O-O-O Ba5 16. Qh4 Kd8 17. Nd5+ Ke8) 8... Qg8? { (1.90 > 4.48) Mistake. The best move was Qf8. } (8... Qf8 9. Qe3 Kd8 10. O-O-O a5 11. e5 Be7 12. exf6 Bxf6 13. Ne4 Be7 14. Kb1 Na6 15. Nf4 b5 16. c3 Nc7) 9. g3? { (4.48 > 2.07) Mistake. The best move was e5. } (9. e5 Bb4 10. exf6+ Kd8 11. Ng5 Qf8 12. Qxf8+ Rxf8 13. Nxh7 Rh8 14. a3 Bxc3+ 15. bxc3 d5 16. Kd2 Nd7 17. Rae1) 9... f5? { (2.07 > 5.06) Mistake. The best move was e5. } (9... e5 10. O-O Qf8 11. Qd2 exd4 12. Ne2 c5 13. Nhf4 b6 14. Nd5+ Ke8 15. Nef4 Bb7 16. c3 Nc6 17. Be2 Rc8 18. Bh5+ Kd8) 10. e5? { (5.06 > 3.60) Mistake. The best move was Qh4+. } (10. Qh4+ Kf7 11. exf5 Be7 12. Qf4 d5 13. O-O Qf8 14. fxe6+ Kg8 15. Qe3 Na6 16. a3 h5 17. Nf4) 10... Bb4 11. O-O? { (3.34 > 2.33) Mistake. The best move was g4. } (11. g4 Kd8 12. gxf5 Qf8 13. Qxf8+ Rxf8 14. f6 d6 15. O-O-O dxe5 16. dxe5 Nd7 17. Bxh7 Bxc3) 11... c5?? { (2.33 > 8.24) Blunder. The best move was Kd8. } (11... Kd8 12. Ne2 Be7 13. c4 b6 14. a3 Kc7 15. Qe3 h5 16. Nhf4 h4) 12. Nb5 Nc6? { (8.21 > Mate in 2) Checkmate is now unavoidable. The best move was Ke8. } (12... Ke8 13. Qh4 d5 14. exd6 Qg7 15. Nc7+ Kd7 16. dxc5 Bxc5 17. Bb5+ Nc6 18. Nxa8 a6 19. Bxc6+ Kxc6 20. b4 Qd4 21. bxc5 Qxh4 22. gxh4) 13. Qf6+ Ke8 14. Nc7# { Black is checkmated } 1-0

Amir (953) vs Juan Pablo (927)

A late PolaChess session today, since Amir was looking for his new place to live (which he found, by the way). Everybody was expecting a bold queen sacrifice from Juan Pablo, which, not disappointingly, duly came on precisely the traditional 12th move. We let you discover this fantastic queen blunder of majestic proportion which, as it should to have all its savor, was played on a strong, if not winning, position.

[Event "Casual game"] [Site "http://lichess.org/YeZ9kpDn"] [Date "2015.03.17"] [White "Amir"] [Black "Pablo"] [Result "1-0"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "25"] [Variant "Standard"] [TimeControl "-"] [ECO "C20"] [Opening "King Pawn Game, General"] [Annotator "lichess.org"] 1. e4 e5 { King Pawn Game, General } 2. g3 Nf6 3. Bd3?! { (-0.18 > -1.05) Inaccuracy. The best move was Nc3. } (3. Nc3 Bc5 4. f4 d6 5. fxe5 dxe5 6. Nf3 Bg4) 3... d5 4. exd5 Nxd5 5. Bb5+?! { (-0.57 > -1.16) Inaccuracy. The best move was Nc3. } (5. Nc3 Be7 6. Be4 c6 7. d4 exd4 8. Nxd5 cxd5 9. Bg2 Nc6 10. Ne2 O-O 11. O-O Bg4 12. h3 Be6 13. Nxd4 Qb6 14. Nxe6 fxe6) 5... c6 6. Bd3 Bc5 7. Qh5?! { (-1.06 > -1.58) Inaccuracy. The best move was Nc3. } (7. Nc3 Nb4 8. Be4 Qd4 9. Qe2 f5 10. a3 fxe4 11. axb4 Bxb4 12. f3 O-O) 7... Nf6?! { (-1.58 > -0.71) Inaccuracy. The best move was Be6. } (7... Be6 8. Nc3 Nd7 9. Nf3 g6 10. Qg5 Nb4 11. Qxd8+ Rxd8 12. Be4 Bd5 13. Kd1 Bxf2) 8. Qxe5+ Be7 9. Qg5?! { (-0.60 > -1.48) Inaccuracy. The best move was Nc3. } (9. Nc3 Nbd7 10. Qf4 Nc5 11. Bc4 Ne6 12. Bxe6 Bxe6 13. Nge2 Bh3 14. Rg1 O-O 15. d3 Re8 16. Be3 Bd6 17. Qd4 Bg4 18. O-O-O) 9... O-O 10. Nf3? { (-1.51 > -2.82) Mistake. The best move was Ne2. } (10. Ne2 Nbd7 11. Nbc3 Nd5 12. Qg4 Nb4 13. Qe4 Nf6 14. Qg2 Nxd3+ 15. cxd3 Re8 16. O-O Bf5 17. d4 Bb4 18. f3 Bd3 19. Rf2 Qe7) 10... Na6? { (-2.82 > -1.56) Mistake. The best move was Ng4. } (10... Ng4 11. Qf4 Bd6 12. Qg5 Re8+ 13. Be2 f6 14. Qh5 g6 15. Qh4 Rxe2+ 16. Kxe2 Qb6 17. d4) 11. Ne5? { (-1.56 > -3.18) Mistake. The best move was O-O. } (11. O-O Nb4 12. Nc3 Nxd3 13. cxd3 Nd5 14. Qe5 Nb4 15. Qe4 Nc2 16. Rb1 Bf6 17. Na4 Bh3 18. Rd1 Re8 19. Qc4 Nd4 20. Nxd4 Qxd4) 11... Nd5? { (-3.18 > -1.60) Mistake. The best move was Qd5. } (11... Qd5 12. f3 Bd6 13. Bc4 Qxe5+ 14. Qxe5 Bxe5 15. c3 Bd6 16. d4 Bf5 17. O-O Rfe8 18. Bg5 Nd5 19. Nd2 b5 20. Bxd5 cxd5 21. Rfe1) 12. Qh5 Qe8?? { (-1.63 > Mate in 1) Checkmate is now unavoidable. The best move was Nf6. } (12... Nf6 13. Qe2 Nb4 14. Nc3 Re8 15. Bc4 Nxc2+ 16. Kd1 Nxa1 17. Nxf7 Qd4) 13. Qxh7# { Black is checkmated } 1-0

== Stefan (1008) vs Javier (964���) ==����

A tense game with a leading White who started to make little mistakes then bigger mistakes then a fatal mistake that let Black recover from a lost piece to a winning position. The message here is: Javier can blunder, so he's reachable, but only once, so remain careful.

[Event "Casual game"] [Site "http://lichess.org/jBD8G7Zy"] [Date "2015.03.18"] [White "Stefan"] [Black "Javier"] [Result "0-1"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "114"] [Variant "Standard"] [TimeControl "10-0"] [ECO "C46"] [Opening "Four Knights Game, General"] [Annotator "lichess.org"] 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 { Four Knights Game, General } 4. d3 Bc5 5. h3 O-O 6. a3 d5 7. exd5 Nxd5 8. Nxd5 Qxd5 9. c4 Qe6 10. Be2 Nd4 11. Ng5 Qf6 12. Be3 Nxe2 13. Bxc5?! { (-0.49 > -1.03) Inaccuracy. The best move was Ne4. } (13. Ne4 Qg6 14. Bxc5 Nd4 15. Bxd4 Qxg2 16. Kd2 exd4 17. Qh5 Qg6 18. Rag1 Qxh5 19. Nf6+ Kh8 20. Nxh5 g6 21. Ng3 Be6 22. Ne4 f6) 13... Re8? { (-1.03 > 0.71) Mistake. The best move was Qxg5. } (13... Qxg5 14. Qxe2 Qxg2 15. O-O-O Re8 16. Qe4 Qxe4 17. dxe4 b6 18. Be3 f5 19. f3 fxe4 20. fxe4 Bb7 21. Rhg1 g6 22. Rd7 Bxe4 23. a4) 14. Ne4 Qg6? { (0.80 > 2.46) Mistake. The best move was Qc6. } (14... Qc6 15. Qxe2 f5 16. Bb4 fxe4 17. Qxe4 Qxe4+ 18. dxe4 Be6 19. Rc1 a5 20. Bc3 Bf7 21. f3 a4 22. c5) 15. Qxe2 Qxg2? { (2.41 > 4.59) Mistake. The best move was f5. } (15... f5 16. Nd2 a5 17. f3 b6 18. Bg1 Bd7 19. Bh2 Qd6 20. O-O Rad8 21. Rae1 f4) 16. O-O-O Bxh3?? { (4.06 > 9.33) Blunder. The best move was Qg6. } (16... Qg6 17. Rhg1 Qf5 18. f4 Kh8 19. fxe5 Be6 20. Ng5 Rad8 21. Bxa7 h6 22. Rdf1 Qxd3 23. Qxd3 Rxd3 24. Nxe6 fxe6 25. Rf7 Ra8 26. Rfxg7) 17. Rdg1 Bg4?! { (9.33 > 19.56) Inaccuracy. The best move was Re6. } (17... Re6 18. Rxg2 Bxg2 19. Rh2 Rg6 20. f4 Bxe4 21. Qxe4 Re8 22. Qxb7) 18. Qxg4?? { (19.56 > 5.75) Blunder. The best move was Rxg2. } (18. Rxg2 f5 19. f3 b6 20. fxg4 f4 21. Bf2 c6 22. g5 Re7 23. Nf6+ Kf7 24. Rxh7 Rd8 25. Qg4 Kg6 26. Qh3 Rb8 27. Ne4 Rd8) 18... Qxg4 19. Rxg4 f5? { (5.68 > 7.22) Mistake. The best move was Re6. } (19... Re6 20. Rhg1 g6 21. Rh4 b6 22. Bb4 c5 23. Bd2 f5 24. Nc3 f4 25. Kc2 Rd8 26. Ne4 Kg7) 20. Rgh4?? { (7.22 > 3.53) Blunder. The best move was Nf6+. } (20. Nf6+ Kf7 21. Nxe8 fxg4 22. Nxc7 Rd8 23. Nd5 b6 24. Be3 h6 25. Rh4 Ke6 26. Rxg4 g5 27. Rg1 Kf5 28. Kc2 Kg6 29. Ne7+ Kf6) 20... fxe4 21. dxe4?! { (3.46 > 2.96) Inaccuracy. The best move was Rxh7. } (21. Rxh7 exd3 22. Kd2 a5 23. Kxd3 Rad8+ 24. Kc3 b6 25. Be3 Rd6 26. c5 Rde6 27. cxb6 cxb6 28. Kc4 Kf7 29. Kb5) 21... h6 22. Be3 Re6 23. Rg1 Kh7 24. Rhg4 Rg8 25. Bxa7?! { (2.98 > 2.37) Inaccuracy. The best move was Rh4. } (25. Rh4 b6 26. Kc2 Rg6 27. Rd1 Rd6 28. Rhh1 Rdd8 29. Rd5 Rge8 30. b3 Kg6) 25... b6 26. c5?! { (2.38 > 1.45) Inaccuracy. The best move was f4. } (26. f4 g5 27. fxg5 Ra8 28. Bxb6 cxb6 29. gxh6 Rc8 30. b3 b5 31. Rg7+ Kxh6 32. Rg8) 26... Rc6 27. Kb1 Rxc5 28. Rg6 Ra5 29. Bxb6?! { (1.50 > 0.87) Inaccuracy. The best move was Bb8. } (29. Bb8 Rc5 30. b4 Rc4 31. Ba7 Rc3 32. Kb2 Rf3 33. R1g2 Rf7 34. b5 Ra8 35. Bxb6 cxb6 36. Rxb6 h5 37. Re6 h4 38. Rxe5 Kh6) 29... cxb6 30. Rxb6 Ra4 31. f3 g5 32. Re6 Ra5?! { (1.57 > 2.17) Inaccuracy. The best move was Rf8. } (32... Rf8 33. Rg3 Rd4 34. Rh3 Kg7 35. Ka2 g4 36. fxg4 Rxe4 37. b4 Rb8 38. Kb2 Kf7 39. Rhxh6 Rxg4 40. Rhf6+ Kg7 41. Rf2 Re4 42. Rf3) 33. Rh1?! { (2.17 > 1.19) Inaccuracy. The best move was Rc1. } (33. Rc1 g4 34. Rcc6 Rg5 35. fxg4 Rxg4 36. Rxh6+ Kg7) 33... Rg6 34. Re7+ Rg7?! { (1.18 > 1.94) Inaccuracy. The best move was Kg8. } (34... Kg8 35. Rc1 Kf8 36. Rd7 Ra8 37. Rc5 Rf6 38. Kc1 Rb8 39. Rd3 Kg7 40. Rxe5 Rbf8 41. Rd7+ Kg6) 35. Rxg7+ Kxg7 36. b4? { (1.86 > -0.77) Mistake. The best move was Ka2. } (36. Ka2 Kg6 37. b4 Ra8 38. Kb3 h5 39. b5 g4 40. fxg4 hxg4 41. Rg1 Kg5 42. a4 Kf4 43. Kb4 g3 44. a5 Kf3) 36... Rxa3 37. Kb2?! { (-0.62 > -1.35) Inaccuracy. The best move was Kc2. } (37. Kc2 Rxf3 38. Rb1 g4 39. b5 Rf8 40. b6 Rb8 41. b7 h5 42. Kd3 Kf6 43. Rb6+ Kg5 44. Ke3 h4 45. Rb5 h3 46. Rxe5+ Kf6) 37... Rxf3 38. Rd1?! { (-0.98 > -1.88) Inaccuracy. The best move was b5. } (38. b5 g4 39. Kc2 Kg6 40. b6 Rf7 41. Kc3 Rb7 42. Rb1 h5 43. Kc4 h4 44. Kd5 g3 45. Kc6 Rb8 46. Kc7 Rh8 47. Rg1 Kg5) 38... Re3? { (-1.88 > -0.43) Mistake. The best move was g4. } (38... g4 39. b5 h5 40. b6 Rf8 41. Kc3 Rb8 42. Rb1 h4 43. Kd2 h3 44. Rg1 Rxb6) 39. b5 Rxe4 40. b6?? { (-0.55 > -4.05) Blunder. The best move was Kb3. } (40. Kb3 Rf4 41. b6 g4 42. b7 Rf8 43. Kc4 Rb8 44. Rb1 h5 45. Kd5 g3 46. Kxe5) 40... Rb4+ 41. Kc3 Rxb6 42. Rd5 Rc6+ 43. Kd3 Kf6 44. Ke4? { (-4.05 > -5.15) Mistake. The best move was Rd8. } (44. Rd8 Kf5 45. Rh8 g4 46. Ke3 Rc3+ 47. Kf2 Rh3 48. Kg2 h5 49. Rf8+ Ke4 50. Rg8 Kf4 51. Rf8+ Ke3 52. Rg8 e4 53. Rg7 Kf4) 44... Rc4+ 45. Kd3?? { (-4.99 > Mate in 17) Checkmate is now unavoidable. The best move was Ke3. } (45. Ke3 h5 46. Rd8 h4 47. Rf8+ Ke6 48. Rh8 Kf5 49. Kd3 Ra4 50. Ke2 Kf4 51. Rf8+ Kg4 52. Rb8 h3 53. Kf2 Ra1 54. Rb4+ e4) 45... Rd4+ 46. Rxd4 exd4 47. Kxd4 Kf5 48. Ke3 Kg4 49. Kf2 h5 50. Kg2 h4 51. Kh2 Kf4 52. Kh3 g4+ 53. Kxh4 g3 54. Kh3 Kf3 55. Kh4 g2 56. Kh3 g1=Q 57. Kh4 Qg4# { White is checkmated } 0-1

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