Revision as of 17:07, 4 March 2015

PolaChess

The PolaChess tournament is the ongoing PolaFlow chess tournament. It is a Round-robin, 10 minutes time, 0 increment tournament played during coffee time. Both a PolÆlO rating and centipawns are computed. The person in charge is Carlos.

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

Games to come

Based on Computer's random sampling. Games that cannot take place are either skipped of flushed to the end.

Decided at the last minute on people's availability.