m (→Stefan (1018) vs Fabrice (1076)) |
(Santiago vs Pablo: With human commentaries.) |
||
| Line 390: | Line 390: | ||
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 | 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 | ||
| + | </pgn> | ||
| + | |||
| + | == Santiago (987) vs Camilo (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. | ||
| + | |||
| + | <pgn> | ||
| + | [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 | ||
</pgn> | </pgn> | ||
Revision as of 16:05, 11 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)
Fabrice (1000) vs David (1000)
Carlos (1016) vs Stefan (1000)
Pablo (1000) vs Fabrice (1016)
Santiago (1000) vs Carlos (1031)
Camilo (984) vs Stefan (985)
David (984) vs Carlos (1046)
23 February (2015) — Blunderful.
Stefan (1001) vs Pablo (985)
Santiago (985) vs David (1003)
Pablo (970) vs David (1018)
David (1032) vs Fabrice (1031)
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.
David (1016) vs Stefan (1001)
Fabrice (1062) vs Carlos (1027)
Pablo (956) vs Camilo (968)
Camilo wins on time. Interesting, 26. Qd6+?! is not a blunder (only a mistake). The next move, however, is a proper queen panick moment.
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.
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).
Santiago (987) vs Camilo (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.
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.