How can Stockfish 15 lose with Black to a human?

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Chessqueen
Posts: 5685
Joined: Wed Sep 05, 2018 2:16 am
Location: Moving
Full name: Jorge Picado

How can Stockfish 15 lose with Black to a human?

Post by Chessqueen »

How can Stockfish 15 lose with Black to a human, being 92 point up in material ?


[fen]rnbqkbnr/pppppppp/8/PPPPPPPP/RNBQKBNR/pppppppp/rrbqqbrr/rnbqqbnr w - - 0 1 [/fen]

Learn the importance of Space and control of squares in Chess :roll:
[pgn][Event "Computer chess game"]
[Site "DESKTOP-OFQ3C0P"]
[Date "2022.07.31"]
[Round "?"]
[White "Dumb-1.10"]
[Black "Berserk-9-x64-avx2-pext"]
[Result "1-0"]
[BlackElo "3535"]
[Time "22:35:39"]
[WhiteElo "2000"]
[TimeControl "300+5"]
[SetUp "1"]
[FEN "rnbqkbnr/pppppppp/8/PPPPPPPP/RNBQKBNR/8/8/8 w kq - 0 1"]
[Termination "adjudication"]
[PlyCount "46"]
[WhiteType "program"]
[BlackType "program"]

1. h6 {(h5-h6 g7xh6 e5-e6 f7-f6 g5xh6 a7-a6 b5xa6 Nb8xa6 Nb4xa6 b7xa6 c5-c6
d7xc6 d5xc6 Ra8-b8 Qd4xd8+ Ke8xd8 Bc4-d3 Rb8-b3 Ra4-d4+ Kd8-e8 Bf4xc7)
+3.31/19 11} Nxh6 {(Ng8xh6 g5xh6 a7-a6 e5-e6 d7xe6 h6xg7 Rh8-g8 g7xf8R+
Rg8xf8 f5xe6 f7xe6 Ng4-e5 Nb8-d7 d5xe6 Nd7-f6+ Ke4-d3 Qd8xd4+ Kd3xd4 a6xb5
Bc4xb5+ c7-c6 Bb5-c4 Rf8-g8 a5-a6 Rg8-g1 a6-a7 h7-h5 Bf4-e3 Rg1-g8 Nb4-d3
Ke8-d8 Ne5-f7+ Kd8-e8 Nf7-g5 Ke8-f8 Kd4-c3 Kf8-g7 Nd3-e5 Nf6-d5+ Bc4xd5
c6xd5 Rh4xh5) -14.38/29 101} 2. gxh6 {(g5xh6) +4.66/20 11} a6 {(a7-a6 e5-e6
d7xe6 h6xg7 e6xf5+ Ke4-d3 Rh8-g8 g7xf8Q+ Rg8xf8 Ng4-f6+ e7xf6 Ra4-a2 a6xb5
Bc4xb5+ c7-c6 d5xc6 Nb8xc6 Nb4xc6 Qd8xd4+ Kd3xd4 Bc8-e6 Nc6-b4+ Ke8-d8
Nb4-d5 Rf8-h8 Rh4-h6 Rh8-g8 Rh6xh7 Ra8-a7 a5-a6 b7xa6 c5-c6 a6-a5 Kd4-c5
a5-a4 Ra2-d2 Be6xd5 Rd2xd5+ Kd8-e7 Kc5-b6 Rg8-a8 Bf4-d6+ Ke7-e6 Bb5-c4
a4-a3 c6-c7) -15.97/28 92} 3. hxg7 {(h6xg7 Bf8xg7 f5-f6 Bg7-f8 d5-d6 e7-e6
Nb4-d5 c7xd6 c5xd6 a6xb5 Nd5-c7+ Qd8xc7 d6xc7 Nb8-c6 Qd4-a1 b5xa4 Qa1xa4
Ra8xa5 Qa4-c2 Ra5-a1 Bf4-g3) +4.84/20 9} Bxg7 {(Bf8xg7 f5-f6 Bg7xf6 e5xf6
d7-d6 c5-c6 b7xc6 b5xc6 Nb8-d7 c6xd7+ Qd8xd7 f6xe7 Qd7xe7+ Ke4-d3 f7-f6
Nb4-c6 Qe7-e1 Qd4-e3+ Qe1xe3+ Ng4xe3 h7-h5 Kd3-c3 Ke8-f7 Ra4-b4 Kf7-g7
Bc4-d3 f6-f5 Kc3-d4 Kg7-g6 Nc6-e7+ Kg6-f7 Ne7xc8 Rh8xc8 Bd3xf5 Kf7-g7)
-16.54/23 11} 4. f6 {(f5-f6) +5.16/21 11} Bxf6 {(Bg7xf6 e5xf6 d7-d6 c5-c6
b7xc6 b5xc6 Nb8-d7 c6xd7+ Qd8xd7 f6xe7 Qd7xe7+ Ke4-d3 f7-f6 Nb4-c6 Qe7-e1
Qd4-e3+ Qe1xe3+ Ng4xe3 h7-h6 Ra4-b4 f6-f5 Kd3-c3 Rh8-h7 Bc4-d3 Bc8-d7
Ne3xf5 Ra8-c8 Nf5-d4 Bd7xc6 d5xc6 Rh7-f7 Bd3-g6 Ke8-f8 Bf4xh6+ Kf8-g8)
-17.54/26 21} 5. exf6 {(e5xf6 d7-d6 f6xe7 Qd8xe7+ Ke4-f3 Bc8xg4+ Rh4xg4
f7-f6 Bf4xd6 Qe7-f7 Rg4-e4+ Ke8-d8 Bd6xc7+ Kd8-c8 d5-d6 Qf7-h5+ Kf3-g2
Qh5-g6+ Re4-g4 Qg6-f5 Rg4-f4 Qf5-g5+ Rf4-g4 Qg5-f5 Rg4-g7) +6.26/18 9} d6
{(d7-d6 c5-c6 b7xc6 b5xc6 Nb8-d7 c6xd7+ Qd8xd7 f6xe7 Qd7xe7+ Ke4-d3 f7-f6
Nb4-c6 Qe7-e1 Qd4-e3+ Qe1xe3+ Ng4xe3 Ke8-f8 Ra4-a2 Kf8-f7 Nc6-d4 h7-h6
Nd4-e6 Ra8-a7 Ne3-f5 Kf7-g6 Nf5-d4 Kg6-f7 Ra2-g2 Rh8-g8 Rg2-f2 Rg8-h8
Bf4xh6 Ra7-b7) -17.82/25 7} 6. fxe7 {(f6xe7 Qd8xe7+ Ke4-f3 f7-f6 Ng4xf6+
Ke8-f7 Rh4-h6 Bc8-f5 c5-c6 a6xb5 Bc4xb5 b7-b6 a5xb6 Ra8xa4 Bb5xa4 Qe7-d8
Nf6-e4 Kf7-g8 b6xc7 Qd8xc7) +6.59/18 9} Qxe7+ {(Qd8xe7+ Ke4-f3 f7-f6
Ng4xf6+ Ke8-f7 Rh4-h6 Nb8-d7 Nf6-h5 Nd7-e5+ Bf4xe5 Qe7-g5 Qd4-f4+ Qg5xf4+
Be5xf4 a6xb5 Bc4xb5 Bc8-h3 c5xd6 c7xd6 Bf4xd6 Rh8-d8 Nb4-d3 Kf7-g8 Ra4-f4
Rd8xd6 Rh6xd6 Ra8-c8 Nh5-f6+ Kg8-g7) -19.78/22 13} 7. Kf3 {(Ke4-f3 Bc8xg4+
Rh4xg4 f7-f6 Bf4xd6 c7xd6 Rg4-e4 Nb8-d7 Re4xe7+ Ke8xe7 c5xd6+ Ke7xd6 b5xa6
b7xa6 Nb4xa6 Rh8-f8 Kf3-f4 Ra8-e8 Ra4-b4 Re8-e5 Qd4-c3 Re5-g5 Kf4-e4)
+6.75/20 9} Bxg4+ {(Bc8xg4+ Rh4xg4 f7-f6 c5-c6 Nb8-d7 c6xb7 Ra8-b8 b5xa6
Nd7-e5+ Bf4xe5 h7-h5 Rg4-g2 f6xe5 Qd4-e4 Qe7-f7+ Kf3-e2 h5-h4 Bc4-b5+
Ke8-f8 Rg2-f2 Qf7xf2+ Ke2xf2 Kf8-g7 Qe4-g4+ Kg7-f7 Qg4-e6+ Kf7-g7 Qe6-d7+
Kg7-f6 Qd7xc7 h4-h3 Qc7xd6+ Kf6-g7 Qd6xe5+ Kg7-f7 Kf2-f3) -21.53/25 41} 8.
Rxg4 {(Rh4xg4) +7.56/22 10} f6 {(f7-f6 c5-c6 h7-h5 Rg4-g2 Nb8-d7 c6xb7
Ke8-f7 b7xa8R Rh8xa8 Qd4-d3 Kf7-e8 Qd3-g6+ Qe7-f7 Qg6-g8+ Qf7xg8 Rg2xg8+
Nd7-f8 Nb4xa6 Ke8-f7 Rg8-g1 Ra8-a7 Na6-b4) -21.42/24 18} 9. Bxd6 {(Bf4xd6
c7xd6 Rg4-e4 Nb8-d7 Re4xe7+ Ke8xe7 b5xa6 b7xa6 Nb4-c6+ Ke7-f7 c5xd6 h7-h6
Kf3-f4 Rh8-g8 Bc4-d3 Rg8-g7 Bd3-f5 Kf7-f8 Bf5-e6 h6-h5 Ra4-b4 Kf8-e8
Be6xd7+ Rg7xd7 Qd4xf6) +8.07/22 8} cxd6 {(c7xd6 Rg4-e4 Nb8-d7 Re4xe7+
Ke8xe7 c5xd6+ Ke7xd6 b5xa6 b7xa6 Qd4-f4+ Nd7-e5+ Kf3-e4 Rh8-f8 Bc4xa6
Kd6-e7 Ba6-b7 Ra8-e8 Ke4-d4 Rf8-g8 Kd4-c5 Ke7-f7 d5-d6 Rg8-g5 Qf4-d4 Re8-d8
a5-a6 Kf7-g7 Nb4-d5 h7-h5 a6-a7 Rg5-g4 Qd4-a1 Rg4xa4 Qa1xa4 h5-h4 Nd5-c7
Ne5-d7+ Kc5-b5 h4-h3) -15.78/22 8} 10. Re4 {(Rg4-e4 Nb8-d7 Re4xe7+ Ke8xe7
b5xa6 Nd7-e5+ Kf3-f4 b7xa6 c5xd6+ Ke7-f7 Nb4-c6 Rh8-f8 Nc6xe5+ f6xe5+
Kf4xe5 Ra8-e8+ Ke5-f5 Re8-d8 Qd4-b6 Rd8-d7 Qb6xa6 Rf8-d8 Kf5-e5 Rd7xd6
Qa6xd6 Rd8xd6 Ke5xd6 Kf7-f6) +8.14/22 9} Nd7 {(Nb8-d7 Re4xe7+ Ke8xe7 c5xd6+
Ke7-f8 b5xa6 b7xa6 Nb4-c6 Rh8-g8 Ra4-b4 Rg8-g5 Rb4-b7 Rg5-g7 Qd4-f4 Ra8-e8
Rb7-c7 h7-h5 Qf4-f5 Re8-e5 Nc6xe5 Nd7xe5+ Kf3-e3 Rg7-g3+ Ke3-d4 Rg3-g4+
Kd4-c3 Rg4-g3+ Kc3-b4) -16.38/20 2} 11. Rxe7+ {(Re4xe7+) +8.44/22 10} Kxe7
{(Ke8xe7 c5xd6+ Ke7xd6 b5xa6 b7xa6 Qd4-f4+ Nd7-e5+ Kf3-e4 Rh8-f8 Bc4xa6
h7-h6 Ke4-d4 Kd6-c7 Ba6-b5 Ra8-c8 Bb5-c6 Kc7-d8 a5-a6 Kd8-e7 a6-a7 Rf8-d8
Kd4-c5 Ke7-f7 Qf4-d4 Kf7-g7 Kc5-b6 h6-h5 d5-d6 Ne5xc6) -17.45/23 6} 12.
bxa6 {(b5xa6 d6xc5 d5-d6+ Ke7-f8 Qd4-e3 Nd7-e5+ Kf3-g2 Kf8-g7 a6xb7 Ra8-b8
Nb4-d3 Rh8-e8 Qe3-g3+ Kg7-h8 Nd3xc5 Ne5xc4 Ra4xc4 Re8-e2+ Kg2-g1 Re2-b2
d6-d7 Rb2-b1+ Kg1-f2 Rb8-d8 Qg3-c7 Rb1-b2+ Kf2-e3) +8.58/21 10} Rhb8
{(Rh8-b8 c5xd6+) -18.92/22 22} 13. Qe4+ {(Qd4-e4+ Ke7-f8 Qe4xh7 Nd7xc5
a6xb7 Nc5xb7 Nb4-c6 Rb8-e8 Qh7xb7 Ra8-c8 Qb7-d7 Rc8-a8 Qd7xd6+ Kf8-f7
Kf3-f4 Kf7-g7 Qd6-d7+ Kg7-h6 d5-d6 Re8-e1 Qd7-f7 Ra8-e8) +10.48/19 7} Kf8
{(Ke7-f8 c5xd6) -19.75/22 9} 14. Qxh7 {(Qe4xh7) +11.18/22 10} Ne5+
{(Nd7-e5+ Kf3-f4) -23.46/20 6} 15. Kf4 {(Kf3-f4) +12.25/23 10} bxa6 {(b7xa6
Nb4-c6 Ne5-f7 c5xd6 Rb8-b7) -16.27/19 1} 16. Nxa6 {(Nb4xa6 Rb8-b2 Qh7-h8+
Kf8-f7 Qh8xa8 Rb2-g2 c5xd6 Rg2-g4+ Kf4-e3 Rg4xc4 d6-d7 Rc4-c3+ Ke3-d4
Rc3-d3+ Kd4-e4 Ne5xd7 Ke4xd3 Nd7-e5+ Kd3-d4 Kf7-g7 Na6-c5 Kg7-h7 Qa8-f8
Kh7-g6 d5-d6 Kg6-f5 d6-d7) +13.01/22 9} Rc8 {(Rb8-c8 Na6-c7) -25.37/21 7}
17. cxd6 {(c5xd6 Rc8-d8 Na6-c7 Rd8xd6 Qh7-h8+ Kf8-f7 Qh8xa8 Ne5-g6+ Kf4-f5
Ng6-h4+ Kf5-e4 Kf7-g6 Qa8-g8+ Kg6-h6 Qg8-f8+ Kh6-g6 Qf8xd6 Nh4-f5 Qd6-e6
Nf5-g7 Qe6-g4+ Kg6-h7 Qg4-h4+ Kh7-g6 Nc7-e6 Kg6-f7 Ne6-d8+ Kf7-e7 Nd8-c6+
Ke7-d7 Qh4xf6 Ng7-h5) +16.01/23 8} Rd8 {(Rc8-d8 Na6-c7) -42.44/20 5} 18.
Nc7 {(Na6-c7) +21.86/27 9} Rxd6 {(Rd8xd6 Qh7-h8+ Kf8-f7 Qh8xa8 Ne5-g6+
Kf4-e3 f6-f5 Qa8-e8+ Kf7-f6 Ke3-d4 f5-f4 Kd4-c5 Ng6-e7 Kc5xd6 Ne7-f5+
Kd6-c5 Nf5-g3 Qe8-e6+ Kf6-g5 Qe6-e5+ Kg5-g4 d5-d6 Kg4-f3 Bc4-d5+ Ng3-e4+
Qe5xe4+ Kf3-f2 Qe4xf4+ Kf2-e2) -277.78/19 3} 19. Qh8+ {(Qh7-h8+) +27.39/24
9} Kf7 {(Kf8-f7 Qh8xa8 Ne5-g6+ Kf4-e3 f6-f5 Ke3-d4 f5-f4 Kd4-c5 Ng6-e5
Kc5xd6 f4-f3 Kd6xe5) -34.96/18 0} 20. Qxa8 {(Qh8xa8) +23.55/16 9} Ng6+
{(Ne5-g6+ Kf4-e3 f6-f5 Ke3-d4 Rd6-f6 d5-d6+ Kf7-g7 Nc7-e8+ Kg7-h6 Qa8-h1+
Kh6-g5 Qh1-g2+ Kg5-f4) -40.67/19 1} 21. Ke4 {(Kf4-e4) +23.78/22 9} f5+
{(f6-f5+ Ke4-d4 f5-f4 Qa8-e8+ Kf7-f6 Nc7-e6 Rd6xe6 d5xe6 f4-f3 Qe8-f7+
Kf6-g5 Bc4-d3 Kg5-g4 Qf7xg6+ Kg4-h3 Kd4-c5 f3-f2 Bd3-f1+ Kh3-h2 Qg6-g2+)
-M10/27 3} 22. Kxf5 {(Ke4xf5) +18.46/14 9} Rf6+ {(Rd6-f6+) -16.21/18 2} 23.
Kg5 {(Kf5-g5 Rf6-f5+ Kg5xf5 Ng6-h4+ Kf5-g5 Nh4-f3+ Kg5-h5 Nf3-g5 Kh5xg5
Kf7-e7 Nc7-e6 Ke7-d6 Qa8-f8+ Kd6-e5 Qf8-f4+) +M8/12 9} Rf5 {(Rf6-f5+ Kg5xf5
Ng6-h4+ Kf5-e4 Kf7-g6 Nc7-e6 Nh4-f5 Ke4-e5 Kg6-h5 Ke5xf5 Kh5-h4 Ra4-a3
Kh4-h5 Qa8-h8+) -M7/45 1 User Adjudication} *[/pgn]
Uri Blass
Posts: 11120
Joined: Thu Mar 09, 2006 12:37 am
Location: Tel-Aviv Israel

Re: How can Stockfish 15 lose with Black to a human?

Post by Uri Blass »

Stockfish15 against itself time control 1+1 single core
I do not know the reason I do not see the game correctly.

It was 1.Nxa2 black lost on time and I suspect stockfish is not designed to play with so many pieces on the board except very fast time control.

[pgn][Event "Computer chess game"]
[Site "DESKTOP-7QE6S12"]
[Date "2022.08.01"]
[Round "?"]
[White "Stockfish_15_x64_avx2"]
[Black "Stockfish_15_x64_avx2"]
[Result "1-0"]
[BlackElo "2000"]
[Time "10:26:25"]
[WhiteElo "2000"]
[TimeControl "60+1"]
[SetUp "1"]
[FEN "rnbqkbnr/pppppppp/8/PPPPPPPP/RNBQKBNR/pppppppp/rrbqqbrr/rnbqqbnr w - - 0 1"]
[Termination "time forfeit"]
[PlyCount "1"]
[WhiteType "program"]
[BlackType "program"]

1. Nxa2 {(Nb4xa2 e7-e6 d5xe6 f7xe6 f5xe6 b3xa2 Ng4xh2 d7-d5+ e5xd6/ep
Bc2xa4 Nh2xf1 Qe2xf1 Qd4-e5 c7xd6 c5xd6 Ng8-e7 g5-g6 Rb2-b4 Qe5-c5 Rb4xc4+
Qc5xc4 Qd2-b2 Qc4-c7) -108.91/26 8} ... {Black forfeits on time} 1-0
[/pgn]
Uri Blass
Posts: 11120
Joined: Thu Mar 09, 2006 12:37 am
Location: Tel-Aviv Israel

Re: How can Stockfish 15 lose with Black to a human?

Post by Uri Blass »

Berserk9 against itself
This time I do not try to post pgn
maybe berserk needs longer time control or more cores.

[Event "Computer chess game"]
[Site "DESKTOP-7QE6S12"]
[Date "2022.08.01"]
[Round "?"]
[White "àåøé"]
[Black "Berserk-9-x64-avx2-pext"]
[Result "1-0"]
[BlackElo "2000"]
[Time "10:40:14"]
[WhiteElo "2000"]
[TimeControl "60+1"]
[SetUp "1"]
[FEN "rnbqkbnr/pppppppp/8/PPPPPPPP/RNBQKBNR/pppppppp/rrbqqbrr/rnbqqbnr w kq - 0 1"]
[Termination "normal"]
[PlyCount "24"]
[WhiteType "program"]
[BlackType "program"]

1. Nxa2 {(Nb4xa2 b3xa2 Ng4xh2 Bc2xa4 e5-e6 g3xh2 e6xf7+ Ke8xf7 a5-a6 Bf2xh4
a6xb7 Bh4xg5 b7xa8Q Bg5xf4 d5-d6+ Kf7-e8 Ke4xf4 c7xd6 Bc4-f7+ Ke8xf7
Qa8-d5+ Kf7-e8 Qd5-f7+ Ke8xf7 Qd4-d5+ Kf7-e8) -M413/25 2} bxa2 {(b3xa2
Ng4xh2 Bc2xa4 e5-e6 g3xh2 e6xf7+ Ke8xf7 a5-a6 Bf2xh4 a6xb7 Bh4xg5 b7xc8Q
Bg5xf4 d5-d6+ Kf7-e8 Qc8xd8+ Ke8xd8 d6xe7+ Ng8xe7 f5-f6 g7xf6 Qd4xf6 Ba4xb5
c5-c6 Bb5xc6+ Ke4-d4 Qe1-g3 h5-h6 Bf8xh6 Qf6xh8+ Ne7-g8 Qh8xh7 Qd1-a4)
+M412/28 1} 2. Nxh2 {(Ng4xh2 Bc2xa4 e5-e6 g3xh2 e6xf7+ Ke8xf7 a5-a6 Bf2xh4
a6xb7 Bh4xg5 b7xc8Q Bg5xf4 d5-d6+ Kf7-e8 Bc4xg8 Qd8xc8 Bg8-f7+ Ke8xf7
Qd4-d5+ Kf7-f6 Qd5-d4+ Kf6-g5 d6xe7 Kg5xh5 Ke4xf4 Rb2xb5 e7xf8Q Rh8xf8
f5-f6 Rf8xf6+ Kf4-e4) -M413/29 3} Bxa4 {(Bc2xa4 e5-e6 g3xh2 e6xf7+ Ke8xf7
a5-a6 Bf2xh4 a6xb7 Bh4xg5 b7xc8Q Bg5xf4 d5-d6+ Kf7-e8 Bc4xg8 Qd8xc8 Bg8-f7+
Ke8xf7 Qd4-c4+ Kf7-f6 Qc4-d4+ Kf6-g5 f5-f6 Kg5xh5 d6xc7 Bf4xc7 Qd4-d5+
Kh5-h4 Ke4-d4 Ba4xb5 Qd5xa8 e7xf6 Qa8xa7 Rb2-b4+ Kd4-d5) +M412/29 2} 3. e6
{(e5-e6 g3xh2 e6xf7+ Ke8xf7 a5-a6 Bf2xh4 a6xb7 Bh4xg5 b7xc8Q Bg5xf4 d5-d6+
Kf7-e8 d6xe7 Qd8xc8 f5-f6 Ba4xb5 f6-f7+ Ke8xe7 f7xg8Q Rh8xg8 Bc4xb5 Rb2xb5
h5-h6 Bf4xh6 Ke4-f5 d7-d5+ Kf5-e5 Nb8-c6+ Ke5xd5) -M413/29 2} gxh2 {(g3xh2
e6xf7+ Ke8xf7 a5-a6 Bf2xh4 a6xb7 Bh4xg5 b7xc8Q Bg5xf4 d5-d6+ Kf7-e8 Bc4-f7+
Ke8xf7 Qc8xd8 Qe1-g3 Qd8xc7 Rb2xb5 d6xe7 Bf4xc7 e7xf8Q+ Kf7xf8 h5-h6 g7xh6
Qd4xh8 Rb5xc5 Qh8xh7) +M412/28 1} 4. exf7+ {(e6xf7+ Ke8xf7 a5-a6 Bf2xh4
a6xb7 Bh4xg5 b7xc8Q Bg5xf4 d5-d6+ Kf7-e8 f5-f6 Qd8xc8 f6xe7 Ba4xb5 Bc4-f7+
Ke8xf7 Qd4-d5+ Kf7-e8 e7xf8Q+ Ke8xf8 d6xc7 Bf4xc7 Qd5-f7+ Kf8xf7 h5-h6
Ng8xh6 Ke4-d5) -M413/26 1} Kxf7 {(Ke8xf7 a5-a6 Bf2xh4 a6xb7 Bh4xg5 b7xc8Q
Bg5xf4 d5-d6+ Kf7-e8 Ke4-d5 Qd8xc8 Kd5-e4 c7xd6 Bc4xg8 Qc8xc5 Qd4xc5 Rh8xg8
Qc5-c8+ Ke8-f7 Qc8-c4+ Kf7-f6 Qc4-f7+ Kf6xf7 Ke4-d5 Rb2xb5+ Kd5-d4 Rb5xf5
h5-h6) +M412/22 0} 5. c6 {(c5-c6 Bf2xh4 c6xd7 Nb8xd7 d5-d6+ Kf7-e8 d6xc7
Bh4xg5 c7xd8Q+ Ke8xd8 Ke4-d5 Qe1-f2 Bf4xg5 Rg2xg5 Kd5-e6 Rg5xh5 b5-b6 a7xb6
Qd4-f4 Ra8xa5 f5-f6 Ng8xf6 Ke6-f7 Qd1-b3 Kf7-e6 Qb3-b4 Ke6-f7 e7-e6)
-M413/23 0} Bxh4 {(Bf2xh4 c6xd7 Nb8xd7 d5-d6+ Kf7-e8 f5-f6 e7xf6 Qd4-d5
Qd8-e7+ d6xe7 Ng8xe7 g5xf6 Ne7xd5 Ke4xd5 Nd7xf6+ Kd5-d4 Nf6xh5 Bf4xc7
Ba4xb5 Bc4-f7+ Ke8xf7 Bc7-g3 Qe1xg3 Kd4-e4) +M412/23 4} 6. cxb7 {(c6xb7
Bh4xg5 b7xc8Q Qd8xc8 d5-d6+ Kf7-e8 Qd4-d5 c7xd6 Qd5-f7+ Ke8-d8 Qf7xf8+
Kd8-c7 Qf8xc8+ Kc7xc8 Bf4xg5 Rg2xg5 Bc4xg8 Rb2xb5 Bg8xa2) -M413/22 6} Bxb7
{(Bc8xb7 h5-h6 Rg2-g4 Qd4-e5 Qe1-g3 h6xg7 Bh4xg5 g7xh8N+ Kf7-e8 Nh8-g6
h7xg6 Ke4-d4 Rg4xf4+ Qe5-e4 Rf4xe4+ Kd4xe4 Qg3-f4+) +M9/21 4} 7. Qb6
{(Qd4-b6 c7xb6 g5-g6+ Kf7-e8 f5-f6 Ng8xf6+ Ke4-f5 d7-d6 Bf4-g5 Rg2xg5+
Kf5-f4 Qe1-g3+) -M6/33 4} cxb6 {(c7xb6 g5-g6+ Kf7-e8 f5-f6 Ng8xf6+ Ke4-f5
d7-d6 Bf4-g5 Rg2xg5+ Kf5-f4 Qe1-g3+) +M6/37 1} 8. g6+ {(g5-g6+ Kf7-e8 f5-f6
Ng8xf6+ Ke4-f5 d7-d6 Bf4-g5 Rg2xg5+ Kf5-f4 Qe1-g3+) -M5/49 2} Ke8 {(Kf7-e8
f5-f6 Ng8xf6+ Ke4-f5 d7-d6 Bf4-e5 Qd8-d7+ Kf5-f4 Qe1-g3+) +M5/56 1} 9. axb6
{(a5xb6 d7-d6 Bc4-b3 Ng8-f6+ Ke4-d4 Qd8xb6+ Kd4-c4 Qd1xb3+) -M4/65 2} d6
{(d7-d6 Bc4-b3 Ng8-f6+ Ke4-d4 Qd8xb6+ Kd4-c4 Qd1xb3+) +M4/77 0} 10. Bb3
{(Bc4-b3 Ng8-f6+ Ke4-d4 Qd8xb6+ Kd4-c4 Qd1xb3+) -M3/87 4} Qxb3 {(Qd1xb3
Bf4xd6 Qb3xd5+ Ke4-f4 Qd8xd6+) +M3/121 0} 11. Be5 {(Bf4-e5 Qb3xd5+ Ke4-f4
Qd5xe5+) -M2/127 0} Qxd5+ {(Qb3xd5+ Ke4-f4 Qd5xe5+) +M2/127 0} 12. Kf4
{(Ke4-f4 Qd5xe5+) -M1/127 0} dxe5# {(d6xe5+) +M1/127 0} 1-0
Uri Blass
Posts: 11120
Joined: Thu Mar 09, 2006 12:37 am
Location: Tel-Aviv Israel

Re: How can Stockfish 15 lose with Black to a human?

Post by Uri Blass »

Another win for black by berserk
This time longer time control and against berserk say mate against white from the first move.

Chess engines are divided mainly to 2 types:
type A:Cannot play the game
type B:Play bad with white and lose
I do not know how many can play well with white in order to win against themselves with white and not by time.

[Event "Computer chess game"]
[Site "DESKTOP-7QE6S12"]
[Date "2022.08.01"]
[Round "?"]
[White "àåøé"]
[Black "Berserk-9-x64-avx2-pext"]
[Result "1-0"]
[BlackElo "2000"]
[Time "10:43:34"]
[WhiteElo "2000"]
[TimeControl "300+5"]
[SetUp "1"]
[FEN "rnbqkbnr/pppppppp/8/PPPPPPPP/RNBQKBNR/pppppppp/rrbqqbrr/rnbqqbnr w kq - 0 1"]
[Termination "normal"]
[PlyCount "24"]
[WhiteType "program"]
[BlackType "program"]

1. Nxa2 {(Nb4xa2 b3xa2 Ng4xh2 Bc2xa4 d5-d6 g3xh2 d6xe7 Bf2xh4 f5-f6 g7xf6
e7xf8Q+ Ke8xf8 Qd4-d6+ c7xd6 g5-g6 Qd8xa5 g6xf7 d6xc5 f7xg8Q+ Rh8xg8 Bc4xg8
Qa5xb5 e5xf6 Kf8xg8 Bf4xb8 Ra8xb8 Ke4-d5 Bh4xf6 Kd5-e4 Qb5-c6+ Ke4-f5)
-M413/29 14} bxa2 {(b3xa2 Ng4xh2 Bc2xa4 d5-d6 g3xh2 d6xe7 Bf2xh4 f5-f6
g7xf6 e5xf6 Bh4xg5 Bc4xf7+ Ke8xf7 e7xd8N+ Kf7-e8 Qd4-e5+ Ke8xd8 Qe5xc7+
Kd8-e8 Qc7-e5+ Ke8-f7 Qe5-d5+ Kf7xf6 Bf4-e5+ Kf6-e7 Be5-d6+ Ke7-e8 Qd5-e5+
Ng8-e7 Bd6xe7 Bf8xe7 Qe5xh8+ Be7-f8 Qh8xh7 Qd1-b3 a5-a6 Qb3xb5 Qh7-f7+
Ke8xf7 h5-h6) +M412/31 5} 2. Nxh2 {(Ng4xh2 Bc2xa4 e5-e6 g3xh2 e6xf7+ Ke8xf7
d5-d6+ e7-e6 d6xc7 Qd8-e7 c7xb8Q Bf2xh4 Qb8xa8 Bh4xg5 Qa8xc8 Bg5xf4 Qc8xd7
Qe7xd7 f5xe6+ Qd7xe6+ Bc4xe6+ Kf7xe6 Qd4-c4+ Ke6-f6 Qc4-d4+ Kf6-g5 Qd4-d5+
Kg5-g4 Ke4-d4 Rb2xb5 a5-a6 Rb5xc5 Qd5xc5 Bf8xc5+ Kd4xc5 Kg4xh5 a6xb7
Rg2-g4) -M413/30 13} Bxa4 {(Bc2xa4 e5-e6 g3xh2 e6xf7+ Ke8xf7 d5-d6+ e7-e6
d6xc7 Qd8-e7 c7xb8Q Bf2xh4 f5-f6 Ra8xb8 f6xe7 Kf7xe7 Bf4xb8 Rg2xg5 Qd4-d6+
Ke7-f7 Bc4xe6+ d7xe6 Qd6-c7+ Kf7-e8 Qc7xc8+ Ke8-f7 Qc8xb7+ Kf7-f6 Qb7-f7+
Kf6xf7 Bb8xa7) +M412/29 10} 3. e6 {(e5-e6 g3xh2 e6xf7+ Ke8xf7 d5-d6+ e7-e6
d6xc7 Qd8-e7 c7xb8Q Bf2xh4 f5-f6 Ra8xb8 f6xe7 Kf7xe7 Ke4-e5 Ke7-f7 h5-h6
Ba4xb5 a5-a6 Bb5xc4 Qd4xc4 Bh4xg5 h6xg7 Bg5xf4+ Qc4xf4+ Kf7xg7 a6xb7 Bc8xb7
Ke5-d4 Rb2-b5 Qf4-e5+ Kg7-f7 Qe5-f5+ e6xf5 c5-c6) -M413/31 146} gxh2
{(g3xh2 a5-a6 Bf2xh4 e6xf7+ Ke8xf7 d5-d6+ Kf7-e8 d6xc7 Ba4xb5 c7xd8Q+
Ke8xd8 Bc4xb5 Bh4xg5 Bf4xg5 Kd8-c7 Bg5-f4+ d7-d6 a6xb7 Bc8xb7+ c5-c6 Rb2xb5
c6xb7 Kc7xb7 Qd4-d5+ Rb5xd5 Ke4xd5 Qd1-b3+ Kd5-d4 Qe1-h4 Kd4-e4) +M412/26
8} 4. a6 {(a5-a6 Bf2xh4 e6xf7+ Ke8xf7 d5-d6+ Kf7-e8 Bc4xg8 c7xd6 Bg8xa2
Rb2xb5 Ba2-f7+ Ke8xf7 c5xd6 e7xd6 g5-g6+ h7xg6 f5xg6+ Kf7-e6 h5-h6 Rg2xg6
h6xg7 Bf8xg7 Qd4xd6+ Ke6-f7 Qd6xb8 Ra8xb8 Bf4xb8 Rg6xa6) -M413/26 33} dxe6
{(d7xe6 d5xe6 Qd8xd4+ Ke4xd4 f7xe6 a6xb7 Bc8xb7 f5-f6 e7xf6 g5xf6 c3-c2
f6-f7+ Ke8xf7 Bc4xe6+ Kf7xe6 Bf4xc7 Qd2-b4+) +M9/28 5} 5. dxe6 {(d5xe6
Qd8xd4+ Ke4xd4 f7xe6 Bc4xe6 Bc8xe6 f5xe6 Rb2xb5 Kd4-e5 Rb5xc5+ Ke5-d4
Qd1-b3 Kd4xc5 Nb8-c6 a6xb7 Qb3-b5+) -M8/44 9} Qxd4+ {(Qd8xd4+ Ke4xd4 f7xe6
Bc4xe6 Bc8xe6 f5xe6 Rb2xb5 a6xb7 Qd1-b3 b7xa8Q Qb3-b4+ Kd4-e5 Qb4xc5+
Ke5-e4 Rb5-b4+) +M8/49 5} 6. Kxd4 {(Ke4xd4 f7xe6 Bc4xe6 Bc8xe6 f5xe6 Rb2xb5
Kd4-e4 Rb5xc5 Bf4-e5 Qd1-b3 Ke4-f5 Qb3xe6+ Kf5xe6 Ba4-d7+) -M7/48 0} fxe6
{(f7xe6 Bc4xe6 Bc8xe6 f5xe6 Rb2xb5 Kd4-e4 Qd1-b3 Bf4-e5 Rb5xc5 Ke4-f5
Qb3xe6+ Kf5xe6 Ba4-d7+) +M7/54 5} 7. Bxe6 {(Bc4xe6 Bc8xe6 f5xe6 Rb2xb5
Kd4-e4 Qd1-b3 Bf4-e5 Rb5xc5 Ke4-f5 Qb3xe6+ Kf5xe6 Ba4-d7+) -M6/64 13} Bxe6
{(Bc8xe6 f5xe6 Rb2xb5 Kd4-e4 Qd1-b3 Bf4-e5 Rb5xc5 Ke4-f5 Qb3xe6+ Kf5xe6
Ba4-d7+) +M6/74 5} 8. fxe6 {(f5xe6 Rb2xb5 Kd4-e4 Qd1-b3 Bf4-e5 Rb5xc5
Ke4-f5 Qb3xe6+ Kf5xe6 Ba4-d7+) -M5/95 15} Rxb5 {(Rb2xb5 Kd4-e4 Qd1-b3
Bf4-e5 Rb5xc5 Ke4-f5 Qb3xe6+ Kf5xe6 Ba4-d7+) +M5/111 6} 9. Ke5 {(Kd4-e5
Qd1-b3 Ke5-f5 Rb5xc5+ Bf4-e5 Qb3xe6+ Kf5xe6 Ba4-d7+) -M4/127 6} Qb3
{(Qd1-b3 Ke5-f5 Rb5xc5+ Bf4-e5 Qb3xe6+ Kf5xe6 Ba4-d7+) +M4/127 0} 10. Kf5
{(Ke5-f5 Rb5xc5+ Bf4-e5 Qb3xe6+ Kf5xe6 Ba4-d7+) -M3/127 0} Rxc5+ {(Rb5xc5+
Bf4-e5 Qb3xe6+ Kf5xe6 Ba4-d7+) +M3/127 0} 11. Be5 {(Bf4-e5 Qb3xe6+ Kf5xe6
Ba4-d7+) -M2/127 0} Qxe6+ {(Qb3xe6+ Kf5xe6 Ba4-d7+) +M2/127 0} 12. Kxe6
{(Kf5xe6 Ba4-d7+) -M1/127 0} Bd7# {(Ba4-d7+) +M1/127 0} 1-0