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Up Topic The Rybka Lounge / Computer Chess / Fishcooking: CCC game Stockfish 'should have lost'
- By MrKris (**) Date 2019-11-04 21:53
From: https://groups.google.com/forum/#!topic/fishcooking/dlK9ytrmsIQ
Stoofvlees 1-0 Stockfish @ CCC https://www.chess.com/computer-chess-championship#game=182
A: CCC game through 20...Na6:  white R+B+N - black Q+3 pawns
B: variant 18...Bd6 declining the 3rd pawn (but only A shown below)

Gauntlet i7-4770K/RTX 2060
G/28'+1" , Sy.6 1GBhash
                       ELO +/-      Games         Score  Draws
Lc0-v0.22.0_49921      89  93  7.5/12 (+3 -0 =9)  63%    75%
                                       (wh: +3 =3 ; bk: =6) 
                                         A:  B:          
Houdini-6.03c0Std     -89 173  1.5/4    0=  ==    38%    75%
Komodo-13.2.5c0       -89 173  1.5/4    ==  0=    38%    75%
Stockfish_19110221c0  -89 173  1.5/4    ==  0=    38%    75%


Black must keep its extra pawns active, or potentially so, otherwise its queen will lose to white's rook and 2 minors (or the defense will be too hard for a finite time control).
[Event "Stovv_1-0_Sf"]
[Site "Lc0_Sf,Ko,Ho"]
[Date "2019.11.04"]
[Round "- A -"]
[White "Lc0-v0.22.0_49921"]
[Black "Houdini-6.03c0Std"]
[Result "1-0"]
[SetUp "1"]
[FEN "3r4/1k2qBp1/p3Pp2/2p1p3/3p4/2P5/1PN5/1K2R2R w - - 0 39"]

39. Na3 {+1.23/20 0.25s ---- White's f7-bishop and e6-pawn interfere with black's queen and rook -small amount of material vs. large-, black's pawns are therefore weak.} a5 {-0.05/26 14s} 40. Rh2
{+1.47/18 131s} a4 {-0.15/25 42s} 41. Rc2 {+1.58/19 86s} Ka6 {-0.52/25 38s}
42. cxd4 {+2.27/13 74s} exd4 {-0.60/26 17s} 43. Bg6 {+2.30/12 33s} Kb7
{-0.79/26 25s} 44. Ka2 {+2.32/12 64s} Kc6 {-0.23/22 6.4s} 45. Bd3 {+2.46/11
56s} Rb8 {-0.11/23 11s} 46. Rh2 {+2.49/11 43s} Rb3 {-0.84/24 18s} 47. Bc4
{+2.50/11 34s} Rb8 {-0.86/22 1.6s} 48. Rhh1 {+2.49/10 86s} Kc7 {-0.82/23
9.8s} 49. Rh5 {+2.55/9 44s} Rd8 {-0.81/26 8.3s} 50. Rh7 {+2.50/9 46s} Kb6
{-0.83/26 32s} 51. Rg1 {+2.47/9 29s} Rg8 {-0.79/25 6.5s} 52. Re1 {+2.45/9
18s} Rd8 {-0.05/40 26s} 53. Rh2 {+2.41/9 26s} Kc7 {-0.81/25 17s} 54. Rh5
{+2.43/8 20s} Kb7 {-0.78/25 11s} 55. Bd3 {+2.42/8 21s} Kb8 {-0.55/20 3.6s}
56. Re2 {+2.43/8 23s} Qb7 {-0.78/24 19s} 57. Bc4 {+2.49/10 8.1s} Qe7
{-0.71/24 3.8s} 58. Rg2 {+2.47/9 24s} Kc7 {-0.75/24 12s} 59. Rh7 {+2.40/9
10s} Rg8 {-0.74/22 4.0s} 60. Rf2 {+2.36/9 13s} Kb6 {-0.68/21 8.9s} 61. Re2
{+2.37/8 9.2s} Rb8 {-0.66/21 5.4s} 62. Rh5 {+2.38/8 8.3s} Rd8 {-0.60/22
5.2s} 63. Bd3 {+2.32/8 8.6s} Kc6 {-0.53/20 5.6s} 64. Re1 {+2.30/8 6.6s} Kc7
{-0.79/23 13s} 65. Rf5 {+2.25/8 7.9s} Kb8 {-0.56/20 3.2s} 66. Bc4 {+2.28/8
4.0s} Kb7 {-1.12/24 8.8s} 67. Rf2 {+2.28/7 5.0s} Rh8 {-0.71/18 3.7s} 68.
Bb5 {+2.31/7 5.5s} g6 {-0.66/18 3.6s} 69. Bc4 {+2.58/7 2.7s} Rh5 {-1.00/21
9.1s} 70. Ref1 {+3.07/8 2.8s} f5 {-0.75/19 0.86s} 71. Rg1 {+2.75/8 4.7s}
Rh6 {-1.39/20 3.5s} 72. Re2 {+2.67/9 2.0s} f4 {-0.95/16 0.81s} 73. Re5
{+2.71/9 1.7s} Rh5 {-1.97/20 3.5s} 74. Re4 {+3.19/9 2.3s} g5 {-2.92/20
3.6s} 75. Re5 {+4.07/8 2.3s} Qe8 {-3.42/17 1.9s} 76. e7 {+7.18/7 3.8s} Rh7
{-3.54/20 1.0s} 77. Rge1 {+9.71/7 1.7s} d3 {-5.86/15 1.0s} 78. Bxd3
{+13.38/7 2.7s} Rh8 {-7.59/14 1.00s} 79. Bb5 {+24.29/6 2.2s} Qxb5
{-12.88/16 1.0s, White wins by adjudication} 1-0

[Event "Stovv_1-0_Sf"]
[Site "Lc0_Sf,Ko,Ho"]
[Date "2019.11.03"]
[Round "- A -"]
[White "Lc0-v0.22.0_49921"]
[Black "Stockfish_19110221c0"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "8/1kr2qp1/1ppbpp2/p2p4/2nP1P1N/2PN4/KPB2BR1/4R3 w - - 18 38"]

38. f5 {+0.24/19 34s ---- Black has kept its kingside pawns fluid so is ready for white's attack.} e5 {+0.64/28 10s} 39. Ng6 {+0.26/18 40s} e4 {+0.54/36 38s} 40. Ndf4
{+0.28/17 21s} Bxf4 {0.00/37 35s} 41. Nxf4 {+0.31/15 56s} Re7 {0.00/35 13s}
42. Reg1 {+0.33/16 109s} Qg8 {0.00/35 22s} 43. Bd1 {+0.33/20 0.27s} Nd6
{0.00/34 16s} 44. Bg4 {+0.27/17 93s} a4 {0.00/27 7.1s} 45. Be3 {+0.57/14
26s} Nb5 {0.00/35 25s} 46. Ne6 {+0.55/17 54s} a3 {0.00/33 13s} 47. Be2
{+0.50/20 18s} g5 {0.00/37 9.6s} 48. fxg6 {+0.48/22 15s} Rxe6 {0.00/38
9.8s} 49. g7 {+0.38/22 77s} axb2 {0.00/41 17s} 50. Bxb5 {+0.35/23 37s} cxb5
{0.00/43 8.8s} 51. Kxb2 {+0.35/18 0.23s} Re7 {0.00/44 13s} 52. Kb3
{+0.35/16 0.27s} Rc7 {0.00/39 7.8s} 53. Bf4 {+0.54/13 44s} Re7 {0.00/39
9.0s} 54. Rg3 {+0.53/13 14s} Ka7 {0.00/42 30s} 55. Bh6 {+0.53/13 77s} Kb7
{0.00/44 6.8s} 56. Bf4 {+0.53/13 4.0s} Kc6 {0.00/40 7.2s} 57. Rg6 {+0.52/11
21s} Kb7 {0.00/50 7.0s} 58. Bd6 {+0.51/12 19s} Rf7 {0.00/43 8.7s} 59. Bf4
{+0.51/11 0.91s} Re7 {0.00/44 8.2s} 60. R1g3 {+0.45/11 16s} Ka6 {0.00/41
5.9s} 61. Bd6 {+0.41/12 13s} Rf7 {0.00/34 6.7s} 62. Kc2 {+0.38/14 7.5s} b4
{0.00/35 7.1s} 63. Bxb4 {+0.32/14 4.5s} Kb5 {0.00/36 5.9s} 64. Bd6
{+0.23/15 7.1s} e3 {0.00/36 12s} 65. Rg1 {-0.12/15 18s} e2 {0.00/38 4.3s}
66. Kd2 {-0.13/14 0.22s} Ra7 {0.00/41 6.0s} 67. Rb1+ {-0.27/15 4.1s} Kc6
{0.00/42 5.5s} 68. Bf8 {-0.21/14 4.8s} Ra2+ {0.00/35 8.1s} 69. Ke1
{-0.22/14 1.8s} b5 {0.00/40 5.4s} 70. Be7 {-0.10/14 11s} Ra8 {+0.19/36
8.3s} 71. Rxf6+ {-0.09/16 1.4s} Kd7 {0.00/45 11s} 72. Rf8 {-0.06/15 2.2s}
Qh7 {0.00/47 6.0s, Draw by adjudication} 1/2-1/2

[Event "Stovv_1-0_Sf"]
[Site "Lc0_Sf,Ko,Ho"]
[Date "2019.11.04"]
[Round "- A -"]
[White "Lc0-v0.22.0_49921"]
[Black "Komodo-13.2.5c0"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "2k1qb2/pp1r4/2pnpp2/3p4/3P1Pp1/2PBB3/1PN3N1/1K1R3R w - - 0 28"]

28. f5 {+0.60/28 17s ---- Black kept its pawns fluid so white prevents ...f6-f5 but black's pawns are still active.} Nxf5 {0.00/36 29s} 29. Rh8 {+0.61/20 4.3s} Nxe3 {0.00/36
27s} 30. Ncxe3 {+0.60/21 0.23s} f5 {-0.08/35 41s} 31. Nf4 {+0.50/21 132s}
Kb8 {0.00/36 35s} 32. Nxe6 {+0.48/24 53s} Qxe6 {0.00/37 26s} 33. Rxf8+
{+0.48/22 7.8s} Kc7 {0.00/38 29s} 34. Re1 {+0.49/22 0.27s} Qd6 {0.00/39
46s} 35. Rxf5 {+0.83/24 136s} Qg3 {0.00/44 30s} 36. Re2 {+0.85/28 83s} Re7
{0.00/42 23s} 37. Nxd5+ {+0.85/26 0.30s} cxd5 {0.00/44 24s} 38. Rxe7+
{+0.91/30 106s} Kd8 {0.00/46 27s} 39. Rff7 {+0.89/31 36s} Qxd3+ {0.00/48
27s} 40. Kc1 {+0.89/29 0.27s} g3 {0.00/51 36s} 41. Rxb7 {+0.87/25 0.28s}
Qe3+ {0.00/51 137s} 42. Kb1 {+0.73/31 286s} Qd3+ {0.00/56 48s} 43. Kc1
{+0.75/30 0.25s} Qe3+ {0.00/46 28s} 44. Kd1 {+0.75/29 0.24s} Qd3+ {0.00/47
33s} 45. Ke1 {+0.97/29 61s} Qe4+ {0.00/48 43s} 46. Kd1 {+0.97/24 102s} Qd3+
{0.00/56 24s} 47. Ke1 {+0.97/28 15s} Qe4+ {0.00/47 26s} 48. Kd2 {+0.82/24
84s} Ke8 {0.00/49 20s} 49. Rfc7 {+0.82/23 6.7s} Kd8 {0.00/47 23s} 50. Rf7
{+0.77/22 53s} Ke8 {0.00/49 106s} 51. Rfc7 {+0.72/23 27s} Kd8 {0.00/45 22s}
52. Rg7 {+0.68/23 32s} Qg2+ {0.00/58 16s} 53. Kd1 {+0.61/23 25s} Qf1+
{0.00/64 17s} 54. Kd2 {+0.53/24 7.4s} Qg2+ {0.00/60 20s} 55. Ke1 {+0.39/23
18s} Qe4+ {0.00/57 14s} 56. Kd1 {+0.37/23 28s} Qd3+ {0.00/59 38s} 57. Ke1
{+0.26/22 22s} Qe3+ {0.00/60 72s} 58. Kd1 {+0.25/22 0.21s} Qd3+ {0.00/64
61s} 59. Kc1 {+0.23/20 5.3s} Qf1+ {0.00/55 26s} 60. Kc2 {+0.21/19 5.2s}
Qe2+ {0.00/59 48s} 61. Kb3 {+0.17/18 17s} Qc4+ {0.00/56 40s} 62. Ka3
{+0.16/18 0.21s} Qa6+ {0.00/49 10s} 63. Kb4 {+0.13/16 13s, Draw by
adjudication} 1/2-1/2

The original CCC game. Fishcooking blames 42...Nf6 but Stockfish had played passively wasting time shuffling.
Even if 42...Nc7 all 7 of black's pawns are countered, 'held back', by whites only 4 pawns, it has backward base b- e- and g-pawns. [Event "CCC11 Round 1 (30|5)"]
[Site "CCC"]
[Date "2019.11.03"]
[Round "182"]
[White "Stoofvlees"]
[Black "Stockfish"]
[Result "1/2-1/2"]
[BlackElo "2400"]
[ECO "B12"]
[Opening "Caro-Kann"]
[Variation "Advance, 4.h4"]
[WhiteElo "2400"]
[TimeControl "1800+5"]
[Termination "unterminated"]
[PlyCount "163"]
[WhiteType "human"]
[BlackType "human"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 h6 5. g4 Be4 6. f3 Bh7 7. e6 {Book.} Nf6
8. Nh3 Qd6 9. Nf4 fxe6 10. Qe2 Na6 11. g5 Nb4 12. Na3 hxg5 13. hxg5 Bd3 14.
Rxh8 Bxe2 15. gxf6 exf6 16. Nxe2 O-O-O 17. Be3 Qd7 18. O-O-O Nxa2+ 19. Kb1
Nb4 20. c3 Na6 21. Nc2 Qf7 22. Rh7 Qg8 23. Rh4 Nc7 24. Nc1 a5 25. Bd3 a4
26. Rg1 b6 27. Ne2 Kb7 {?} (27. .. Bd6 {Lc0 -0.26 +=}) 28. Bf4 Rd7 29. Rh7
c5 30. Bg6 Bd6 31. Bxd6 Rxd6 32. Na3 Rd7 33. Bc2 c4 34. Nc1 Re7 {? wasting
a tempo} (34. .. b5 {Lc0 -bad for black 0.57, with} 35. Bg6 e5) 35. Na2 f5
(35. .. b5 {Lc0 -bad for black 0.90}) 36. Rgh1 Qe8 37. Rh8 Qd7 38. f4 b5
39. Nb4 Re8 40. R8h4 Rc8 41. Bd1 Ne8 {? blocking black's rook from the
kingside, it has no point on the blockaded queenside} (41. .. Rg8 {Lc0 -bad
for black 0.85}) 42. Bf3 Nf6 (42. .. Nc7 {Lc0 -bad for black 1.18 ------- all of black's 3 extra pawns are stopped --------}) 43. Re1
Ka7 (43. .. Kb6 {Lc0 -bad for black 1.33}) 44. Re5 Rb8 45. Ka2 Qc8 46. Rh1
Rb6 47. Re2 Rb8 48. Nac2 Rb6 49. Rg1 Qc7 50. Ne1 Rd6 51. Ng2 Rb6 52. Rge1
Qd6 53. Re5 Nd7 54. Rxe6 Qxe6 55. Rxe6 Rxe6 56. Nh4 Rh6 57. Nxf5 Rf6 58.
Nxg7 Rxf4 59. Bxd5 Kb6 60. Ne8 Nb8 61. Ba8 Rh4 62. Nd6 Rh6 63. Nf5 Rh8 64.
Be4 Kc7 65. Nd5+ Kd7 66. Nf6+ Kd8 67. d5 Rh2 68. Nd4 b4 69. cxb4 c3 70. Bc2
cxb2 71. Kxb2 {??} (71. Ne4 {! wins as at CCC, Fishcooking and below}) 71.
.. a3+ {here Lc0 -0.41 +=} 72. Kxa3 Rd2 73. Ne6+ Ke7 74. Ng8+ Kd6 75. Bb3
Rxd5 76. Ne7 Re5 77. Nc8+ Kd7 78. Nb6+ Kc6 79. Na4 Kd6 80. Nd4 Na6 81. Nb2
Nxb4 82. Kxb4 1/2-1/2

Stockfish only takes a fraction of a second to find (and stay with) 71.Ne4! +-
Lc0 takes slightly longer - 1 second:
Attachment: Stoov-Sf_281.pgn - Games (35k)
-Arena restarted, both simultaneously:
FEN: 1n1k4/8/5N2/3P4/pP1N4/2p5/KPB4r/8 b - - 1 70
Stockfish_19110221c0: 6-threads
Found 510 tablebases
 1/1  00:00   619  619k  -2.41  70. ... Ke7
 2/2  00:00   848  424k  -1.16  70. ... Ke7 71.b5
 3/3  00:00   1k  538k  -1.16  70. ... Ke7 71.b5 Kxf6
 4/5  00:00   3k  1,696k  -2.93  70. ... cxb2 71.Ne4 b1R 72.Kxb1
 5/5  00:00   4k  2,182k  -2.19  70. ... cxb2 71.Ne4
 6/6  00:00   9k  2,984k  -3.01  70. ... Nd7 71.Nxd7 Kxd7 72.bxc3 Kc7 73.c4
 7/11  00:00   13k  4,343k  -2.93  70. ... Nd7 71.Nxd7 Kxd7 72.bxc3 Kd6 73.c4 Rd2 74.Nf5+ Ke5 75.Ne3 Kd4
 8/12  00:00   27k  4,449k  -2.58  70. ... cxb2 71.Kxb2 Rh6 72.Ne4 Rh5 73.Ka3 Rxd5
 9/11  00:00   32k  4,640k  -2.43  70. ... cxb2 71.Kxb2 a3+ 72.Kb3 Nd7 73.Nxd7 Kxd7 74.Kxa3
 10/15  00:00   48k  3,173k  -1.54  70. ... cxb2 71.Kxb2 a3+ 72.Kb3 Rd2 73.Nc6+ Nxc6 74.dxc6
 11/16  00:00   113k  3,907k  -1.62  70. ... cxb2 71.d6 Rd2 72.Ne6+ Kc8 73.Bf5 Nc6 74.Nc5+ Kb8 75.d7 b1R+ 76.Kxb1 Nxb4 77.Nxa4 Nc6 78.Be4
 12/27  00:00   459k  5,338k  -1.72  70. ... cxb2 71.Ne4 a3 72.Nc3 Rd2 73.Ne6+ Ke7 74.Bb1 Nd7 75.Kxa3 Nf6 76.Nc5 Rd4 77.b5 Nxd5
...
 30/60  00:15   115,217k  7,658k  -3.52  70. ... cxb2 71.Ne4 a3 72.Bb1 Nd7 73.Kxa3 Nb6 74.Ne6+ Kc8 75.d6 Kd7 76.N6c5+ Kc6 77.Ka2 Rh1 78.Kxb2 Kb5 79.Bd3+ Kxb4 80.Na6+ Ka5 81.Nec5 Rh6 82.Nb7+ Ka4 83.Kc3 Ka3 84.Bf5 Rf6 85.Be4 Rh6 86.Kd4 Rh2 87.Nc7 Rh4 88.Nc5 Rh6 89.Kc3 Rh3+ 90.Bd3 Rh5 91.Nb5+ Ka2 92.Kb4 Nd5+ 93.Ka5 Kb2 94.d7 Rh8 95.Nd4 Rb8 96.Nc6 Ra8+ 97.Kb5
 31/60  00:15   121,560k  7,649k  -3.52  70. ... cxb2 71.Ne4 a3 72.Bb1 Nd7 73.Kxa3 Nb6 74.Ne6+ Kc8 75.d6 Kd7 76.N6c5+ Kc6 77.Ka2 Rh1 78.Kxb2 Kb5 79.Bd3+ Kxb4 80.Na6+ Ka5 81.Nec5 Rh6 82.Nb7+ Ka4 83.Kc3 Ka3 84.Bf5 Rf6 85.Be4 Rh6 86.Kd4 Rh2 87.Nc7 Rh4 88.Nc5 Rh6 89.Kc3 Rh3+ 90.Bd3 Rh5 91.Nb5+ Ka2 92.Kb4 Nd5+ 93.Ka5 Kb2 94.d7 Rh8 95.Nd4 Rb8 96.Nc6 Ra8+ 97.Kb5

Lc0-0.22_49921:
...
 9/19  00:01   15k  9k  -1.88  70. ... cxb2 71.Ne4 a3 72.Bb1 Rh3 73.Nc5 Rh4 74.Nce6+ Kd7 75.Kxa3 Na6 76.b5 Nc7 77.Nc5+ Kc8 78.Bf5+ Kb8
...
 15/32  00:13   202k  15k  -1.88  70. ... cxb2 71.Ne4 a3 72.Nc3 Rh4 73.Ncb5 Rh5 74.d6 Kd7 75.Kxa3 Nc6 76.Nxc6 Rxb5 77.Nd4 Rb8 78.Nf5 Ke6 79.Kb3 Ke5 80.Bb1 Ke6 81.Kc3 Ke5 82.d7 Rd8 83.Ne3
 15/32  00:15   240k  15k  -1.95  70. ... cxb2 71.Ne4 a3 72.Nc3 Rh4 73.Ncb5 Rh5 74.d6 Kd7 75.Kxa3 Nc6 76.Nxc6 Rxb5 77.Nd4 Rb8 78.Nf5 Ke6 79.Kb3 Ke5 80.Bb1 Ke6 81.Kc3 Ke5 82.d7 Rd8 83.Ne3

Up Topic The Rybka Lounge / Computer Chess / Fishcooking: CCC game Stockfish 'should have lost'

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