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Up Topic The Rybka Lounge / Chess / World Cup 2021
- By MrKris (****) Date 2021-07-13 18:11
https://worldcup.fide.com/  .pgn's under Info
https://worldcup-results.fide.com/participants

In the game below black made an exchange sacrifice 24...Rxg3 but Stockfish_21070310 calls it 0.00.
Then in the ending after 35...Ka7:
6R1/kb6/5p2/2R1p2p/1p1r3P/2n2P2/4BK2/8 w - - 6 36
The game continued 36.Rg7?? and black won in just a few more moves.
Stockfish says that 36.Rc7! would have drawn.

[Event "World Cup (women)"]
[Site "Sochi"]
[Date "2021.07.12"]
[Round "1.1"]
[White "Drastik, Penelope (1835)"]
[Black "Sebag, Marie (2438)"]
[Result "0-1"]
[ECO "D43"]
[TimeControl "3600+7"]
[Termination "normal"]
[WhiteType "human"]
[BlackType "human"]

1. d4 {[%clk 1:30:59]} d5 {[%clk 1:30:50]} 2. c4 {[%clk 1:31:26]} c6 {[%clk
1:31:17]} 3. Nf3 {[%clk 1:31:53]} Nf6 {[%clk 1:31:43]} 4. Nc3 {[%clk
1:32:21]} e6 {[%clk 1:32:03]} 5. Bg5 {[%clk 1:32:48]} h6 {[%clk 1:32:27]}
6. Bh4 {[%clk 1:33:14]} dxc4 {[%clk 1:30:51]} 7. e4 {[%clk 1:33:37]} g5
{[%clk 1:31:10]} 8. Bg3 {[%clk 1:34:03]} b5 {[%clk 1:31:30]} 9. e5 {[%clk
1:34:15]} Nd5 {[%clk 1:17:44]} 10. Nd2 {[%clk 1:34:38]} h5 {[%clk 1:12:05]}
11. h4 {[%clk 1:17:53]} g4 {[%clk 1:11:18]} 12. Nde4 {[%clk 1:07:28]} Nd7
{[%clk 1:10:19]} 13. Be2 {[%clk 0:58:08]} Bb7 {[%clk 1:04:05]} 14. Qd2
{[%clk 0:43:31]} Nxc3 {[%clk 0:46:17]} 15. bxc3 {[%clk 0:29:09]} c5 {[%clk
0:45:22]} 16. f3 {[%clk 0:29:04]} cxd4 {[%clk 0:38:29]} 17. cxd4 {[%clk
0:26:04]} Qb6 {[%clk 0:35:54]} 18. Rb1 {[%clk 0:24:59]} O-O-O {[%clk
0:22:09]} 19. Bxc4 {[%clk 0:22:30]} b4 {[%clk 0:22:09]} 20. Nd6+ {[%clk
0:18:42]} Bxd6 {[%clk 0:21:27]} 21. exd6 {[%clk 0:19:06]} gxf3 {[%clk
0:20:10]} 22. gxf3 {[%clk 0:17:23]} a5 {[%clk 0:19:31]} 23. a3 {[%clk
0:15:20]} Rhg8 {[%clk 0:18:19]} 24. Kf2 {[%clk 0:13:46]} Rxg3 {!? [%clk
0:13:59]} 25. Kxg3 {[%clk 0:14:15] Stockfish 0.00} Qxd6+ {[%clk 0:14:14]} 26. Kf2 {[%clk
0:13:39]} Nb6 {[%clk 0:14:02]} 27. Be2 {[%clk 0:12:27]} Qxd4+ {[%clk
0:13:59]} 28. Qxd4 {[%clk 0:12:52]} Rxd4 {[%clk 0:14:25]} 29. Ke3 {[%clk
0:12:01]} e5 {[%clk 0:13:46]} 30. Rhc1+ {[%clk 0:11:59]} Kb8 {[%clk
0:13:01]} 31. axb4 {[%clk 0:11:19]} axb4 {[%clk 0:11:51]} 32. Rc5 {[%clk
0:08:55]} f6 {[%clk 0:11:05]} 33. Rg1 {[%clk 0:06:57]} Nd5+ {[%clk
0:07:20]} 34. Kf2 {[%clk 0:07:12]} Nc3 {[%clk 0:06:39]} 35. Rg8+ {[%clk
0:06:03]} Ka7 {[%clk 0:07:02]} 36. Rg7 {[%clk 0:05:29] ??} (36. Rc7 {! = ,
Stockfish_21070310 0.00} Kb6 37. Rf7 Rd2 (37. .. b3 {??} 38. Rb8 {+- ,
Stockfish about 6.00}) (37. .. Kc6 {=} 38. Rb8 Rd2 {as in after 37...Rd2})
38. Rb8 Rxe2+ 39. Kg1 Rb2 40. Rbxb7+ Kc6 41. Rb8 Rb1+ 42. Kf2 Nd5 43. Rh7
Rb2+ 44. Kg1 Nf4 45. Rh6 Kc5 46. Rxf6 b3 47. Rfb6 Kc4 48. Rc8+ Kd3 49. Re8
e4 50. fxe4 Ke3 51. Rg8 Ne2+ 52. Kh1 Nd4 53. Rg2 Rb1+ 54. Kh2 Kxe4 55. Rh6
Rd1 56. Rxh5 Kf4 57. Rf2+ Nf3+ 58. Rxf3+ Kxf3 59. Rb5 Rd2+ 60. Kh3 b2 61.
Rb8 {Stockfish 0.00 =}) 36. .. Kb6 {[%clk 0:06:51] -+ , Stockfish near
+(for black) 7.00} 37. Rcc7 {[%clk 0:05:25]} Bc6 {[%clk 0:06:11]} 38. Ke1
{[%clk 0:04:32]} Rxh4 {[%clk 0:04:10]} 39. Ra7 {[%clk 0:01:54]} Rh1+ {[%clk
0:01:04]} 40. Kd2 {[%clk 0:01:56]} Nxe2 {[%clk 0:01:02]} 41. Kxe2 {[%clk
0:02:22]} b3 {[%clk 0:01:07]} 42. Ra3 {[%clk 0:02:09]} Bb5+ {[%clk
0:01:19]} 43. Ke3 {[%clk 0:02:26]} b2 {[%clk 0:01:46]} 0-1
Up Topic The Rybka Lounge / Chess / World Cup 2021

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