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Up Topic The Rybka Lounge / Computer Chess / Latest Stockfish playing at CCC
- By MrKris (***) Date 2021-05-27 03:07
https://www.chess.com/computer-chess-championship

I happened to see this at 62 games all.

Schedule says done in 40 hours.

Their 1st event with the latest Stockfish (May 24) with its new net.

Sicilian Najdorf Special
Game 10 mins. + 2 secs.
256 EPYC threads / 2x A100
186 of 300 games played.

1 Stockfish    34.5/62 (below 36.0/64)
2 Dragon       34.5/62
3 Lc0-68614    32.5/62 (below 33.0/64)
4 Sf-Classic   32.0/62
5 Ethereal-T20 26.5/62
6 Stoofvlees   26.0/62

23 total non-draws, 163 88% draws

Recent CCC 10|2 Thematics:
Evans Gambit Madness  : 1st Lc0, 2nd Sf,  3rd K'D, 4th SfClassic
Dutch Defense Special : 1st Sf,  2nd Lc0, 3rd K'D, 4th SfClassic
King's Indian Def. Sp.: 1st Lc0, 2nd Sf,  3rd K'D, 4th SfClassic
Caro-Kann Sp. @ 5|2   : 1st Sf,  2nd Lc0, 3rd K'D, 4th SfClassic
 


Lc0 loses like it generally does: a sudden ?? for no reason ('zero' NN unrepairable flaw).
The game was about equal.
Even my 16 thread with Crystal at PV=8 immediately has Lc0's 25...Rf8 as ??.
Stockfish had no difficulties with black.
[Event "Sicilian Najdorf Special (10|2)"]
[Site "chess.com"]
[Date "2021.05.26"]
[Round "1"]
[White "Stockfish"]
[Black "Lc0"]
[Result "1-0"]
[ECO "B90"]
[GameDuration "00:17:15"]
[GameEndTime "2021-05-26T19:28:06.409 PDT"]
[GameStartTime "2021-05-26T19:10:51.315 PDT"]
[Opening "Sicilian"]
[PlyCount "117"]
[TimeControl "600+2"]
[Variation "Najdorf, Byrne (English) attack"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. Qd2 {Book.}
Be7

(8...Nbd7 {Lc0 1/2-1/2 Stockfish} 9. f3 h5 10. Nd5 Bxd5 11. exd5 g6 12. O-O-O Nb6 13. Kb1 Nbxd5 14. Bg5 Be7
15. Bd3 Qc7 16. Rhe1 Nd7 17. f4 Bxg5 18. fxg5 N5b6 19. Be4 Nc4 20. Qd5 Rb8 21.
Qd3 Rc8 22. Rf1 O-O 23. Bd5 Kg7 24. Bxc4 Qxc4 25. Qxc4 Rxc4 26. Rxd6 Nc5 27.
Nxc5 Rxc5 28. h4 Rc4 29. g3 Re4 30. Rd7 Re3 31. Rg1 b5 32. Ra7 Rf3 33. Rxa6 e4
34. a4 bxa4 35. Rxa4 Re8 36. Kc1 e3 37. c3 Rf2 38. Re1 Rg2 39. Rf4 Rxg3 40. b4
Rg2 41. b5 Rg4 42. Rxg4 hxg4 43. Kc2 g3 44. Kd1 g2 45. Rg1 Rb8 46. Rxg2 Rxb5 47.
Ke2 Rc5 48. Kd3 f5 49. gxf6+ Kxf6 50. Rg3 Rh5 51. Rg4 Kf5 52. Rc4 Ke6 53. Rg4
Kf5 54. Rc4 g5 55. hxg5 Rh3 56. Rc5+ Kf4 57. g6 Rh2 58. Rc4+ Kf3 59. Rc8 Rd2+
60. Kc4 Rg2 61. Kd3 Rd2+ 62. Kc4 Rd7 63. Rf8+ Ke4 64. Re8+ Kf4 65. Kb3 Kf3 66.
Rf8+ Ke4 {1/2-1/2} )

9. f3 O-O 10. O-O-O Nbd7 11. g4 b5 12. g5 Nh5 13. Kb1 Nb6 14. Na5 Rc8 15.
Nd5 Nxd5 16. exd5 Bxd5 17. Qxd5 Qxa5 18. c4 Nf4 19. Bxf4 exf4 20. h4 Qa4 21. Rc1
Rc5 22. Qe4 Re8 23. Bd3 g6 24. h5 Re5 25. Qb7 Rf8 {??} ({Crystal 3 mins. PV=1 0.00} 25...bxc4 26.Bxc4 Rd8 27.hxg6 hxg6 28.Bxf7+ Kxf7 29.Rh7+ Ke8 30.Rh8+ Kf7 )
26. hxg6 hxg6 27. Qd7 Kg7 28. Be4 Bxg5 29. Bxg6 Qb4 30. a3 Qc5 31. Be4 Rxe4
32. fxe4 bxc4 33. Rh5 c3 34. Qg4
Kg6 35. Rxc3 Qe5 36. Rc2 Re8 37. Ka1 Qa5 38. Rg2 Re5 39. Qh4 Kf6 40. Rhxg5 Rxg5
41. Qxf4+ Kg6 42. Rf2 Rg1+ 43. Ka2 Qh5 44. Qxf7+ Kh6 45. Qf8+ Kh7 46. Rf7+ Qxf7+
47. Qxf7+ Rg7 48. Qh5+ Kg8 49. Qd5+ Kf8 50. Qxd6+ Ke8 51. e5 a5 52. e6 a4 53.
Qb4 Kd8 54. Qf8+ Kc7 55. Qxg7+ Kb6 56. e7 Ka7 57. e8=Q+ Ka6 58. Qe6+ Ka5 59.
Qg5# 1-0
- By MrKris (***) Date 2021-05-28 02:35
https://www.chess.com/computer-chess-championship#event=sicilian-najdorf-special

Sicilian Najdorf Special
Game 10 mins. + 2 secs.
256 EPYC threads / 2x A100
252 of 300 games played (done in 16 hours).

1 Stockfish    48.5/84
2 Dragon       46.5/84
3 Lc0-68614    45.0/84
4 Sf-Classic   40.0/84
5 Ethereal-T20 36.0/84
6 Stoofvlees   36.0/84


Game #223 White BvsN but even material until near the end.  Black could not stop white's further advanced passed pawns. [Event "Sicilian Najdorf Special (10|2)"]
[Site "chess.com"]
[Date "2021.05.27"]
[Round "1"]
[White "Stockfish"]
[Black "Dragon"]
[Result "1-0"]
[ECO "B90"]
[Opening "Sicilian"]
[Variation "Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Be7 9.Qd2"]
[TimeControl "600+2"]
[Termination "normal"]
[PlyCount "205"]
[WhiteType "human"]
[BlackType "human"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8.
f3 Be7 9. Qd2 h5 {Book} 10. Nd5

( 10.Be2 {Dragon 1/2-1/2 Stockfish} Nbd7 11. Nd5 Bxd5 12. exd5 Qc7 13. Rc1 h4 14. O-O
Nh5 15. Rfd1 b6 16. a4 O-O 17. a5 h3 18. g3 Nhf6 19. g4 Rfb8 20. g5 Nh5 21.
axb6 Nxb6 22. Kh1 g6 23. Na5 Nf4 24. Bxf4 exf4 25. c4 Nd7 26. c5 Bxg5 27.
c6 Ne5 28. b4 Qa7 29. Rf1 Qb6 30. Rg1 Bh4 31. Nc4 Nxc4 32. Rxc4 Bf2 33. Rb1
Be3 34. Qc3 Qb5 35. Rd1 a5 36. Qb2 Qb6 37. Bf1 Qc7 38. Bxh3 Rxb4 39. Rxb4
axb4 40. Qxb4 Qd8 41. Qb7 Bb6 42. Qd7 Qh4 43. Be6 fxe6 44. dxe6 Qh5 45. Rf1
Qh3 46. Qf7+ Kh8 47. Qf6+ Kh7 48. Qf7+ Kh8 49. Qf6+ Kh7 50. Qf7+ Kh6 51.
Qxf4+ Kg7 52. Qf7+ Kh6 53. Qf4+ Kh5 54. Rb1 Qxe6 55. Qg4+ Qxg4 56. fxg4+
Kxg4 57. Rxb6 Ra1+ 58. Kg2 Rc1 59. Rb4+ Kf5 60. Rb5+ Kf4 61. Rb4+ Ke3 62.
Rb3+ Ke4 63. Rb4+ Kd3 64. Rb3+ Ke4 65. Rb4+ Ke5 66. Kf3 Rxc6 67. Re4+ Kf6
68. Rf4+ Ke5 69. Re4+ Kf6 70. Rf4+ Ke6 71. Re4+ Kf5 72. Rf4+ Ke6 73. Re4+
Kf7 74. Rf4+ Ke7 75. Re4+ Kf7 76. Rf4+ {1/2-1/2} )

10... Nxd5 11. exd5 Bf5 12. Be2 Bh4+ 13. g3 Be7
14. O-O-O Nd7 15. Kb1 Rc8 16. Rc1 b5 17. Rhd1 Nf6 18. Ka1 Qd7 19. c4 bxc4
20. Bxc4 O-O 21. Na5 e4 22. f4 Ng4 23. Bd4 Bf6 24. Bxf6 Nxf6 25. Nc6 Rfe8
26. Rc3 Ra8 27. Re1 Qc7 28. a4 Bc8 29. Ka2 Bd7 30. Qd4 {CCC +1.10} Bg4 31.
Ka3 Qc8 32. Qd2 Qc7 33. a5 Reb8 34. Rc2 Rb7 35. b4 Qd7 36. Bb3 Rc7 37. Rec1
Rcc8 38. Ba4 Qb7 39. Qf2 Rc7 40. Bb3 Re8 41. Qg1 Rcc8 42. Rc3 Kf8 43. Qe3
Kg8 44. Qb6 Rc7 45. Qg1 Rcc8 46. Bc4 Rc7 47. Qf1 e3 48. Qd3 e2 49. Re1 Ra8
50. h3 Bxh3 51. Qxe2 Bd7 52. Qf3 Bf5 53. Rce3 Kf8 54. Bb3 {CCC +2.09} Bg4
55. Qg2 Bd7 56. Ba4 Kg8 57. Qf3 Bg4 58. Qf1 Rf8 59. Qd3 Kh8 60. Bb3 {CCC
3.06} Ra8 61. Re7 Kg8 62. Ba4 Kf8 63. R7e3 Bd7 64. f5 Kg8 65. Re7 Qc8 66.
Qd4 Bxc6 67. Rxc7 {CCC +4.26} Qxc7 68. dxc6 Rb8 69. Re2 {CCC +5.13 , white
BvsN otherwise equal material} Kh7 70. Rc2 Qe7 71. Bb3 d5 72. c7 Rc8 73.
Qb6 d4 74. Qxa6 Rxc7 75. Rxc7 Qxc7 76. Qd3 Qd7 77. a6 Qa7 78. Qb5 Qc7 79.
Qc4 Qa7 80. Bc2 Ne8 81. Bd3 h4 82. f6+ g6 83. gxh4 Nxf6 84. Qc5 Qa8 85. h5
Kg7 86. hxg6 Qf3 87. Qxd4 fxg6 88. a7 Kf7 89. b5 g5 90. Qc4+ Kf8 91. Qc5+
Kf7 92. Qc7+ Kf8 93. Qd8+ Kf7 94. a8=Q Qxa8+ 95. Qxa8 Ke7 96. b6 g4 97. b7
Nd7 98. Bb5 g3 99. Bxd7 Kxd7 100. b8=Q Ke6 101. Qe4+ Kf6 102. Qh8+ Kg5 103.
Qhh4# 1-0
- By MrKris (***) Date 2021-05-28 18:38
https://www.chess.com/computer-chess-championship#event=sicilian-najdorf-special

Sicilian Najdorf Special
Game 10 mins. + 2 secs.
256 EPYC threads / 2x A100
300 of 300 games completeed.

1 Stockfish    58.0/100
2 Dragon       55.0/100
3 Lc0-68614    53.0/100
4 Sf-Classic   49.5/100
5 Ethereal-T20 42.5/100
6 Stoofvlees   42.0/100
 
Up Topic The Rybka Lounge / Computer Chess / Latest Stockfish playing at CCC

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