stockfish's stupid analysis in lichess

[Uri Blass]

https://lichess.org/G7O1j1qI

It claims that 45.Ke5 was best but after 45.Ke5 the move g1Q is mate in 10 when after the game move g1Q is only mate in 11 based on chest.

based on chest the game move 45.Kxc5 is the best move when Ke5 is second best move

I can add that there is also a stupid comment about the first move that is not a blunder

[Vinvin]

Lichess analyse is around 1 second by move and its purpose was to analyse human blitz.
Don't expect to make the difference between a mate in 11 and a mate in 10.

[Uri Blass]

Lichess analyse is around 1 second by move and its purpose was to analyse human blitz.
Don't expect to make the difference between a mate in 11 and a mate in 10.

It was better to make no comment instead of making a wrong comment

[syzygy]

Lichess analyse is around 1 second by move and its purpose was to analyse human blitz.
Don't expect to make the difference between a mate in 11 and a mate in 10.

It was better to make no comment instead of making a wrong comment

Can you explain what is wrong about the comment?

[Uri Blass]

Lichess analyse is around 1 second by move and its purpose was to analyse human blitz.
Don't expect to make the difference between a mate in 11 and a mate in 10.

It was better to make no comment instead of making a wrong comment

Can you explain what is wrong about the comment?

[pgn][Event "casual classical game"]
[Site "https://lichess.org/G7O1j1qI"]
[Date "2025.11.29"]
[White "LeelaRookOdds"]
[Black "Yannay_2004"]
[Result "0-1"]
[GameId "G7O1j1qI"]
[UTCDate "2025.11.29"]
[UTCTime "16:00:55"]
[WhiteElo "2000"]
[BlackElo "1500"]
[WhiteTitle "BOT"]
[Variant "From Position"]
[TimeControl "5400+30"]
[ECO "?"]
[Opening "?"]
[Termination "Normal"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/1NBQKBNR w Kkq - 0 1"]
[SetUp "1"]
[Annotator "lichess.org"]

1. f4?? { (0.15 → -5.42) Blunder. e4 was best. } (1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 g6) 1... Nf6 2. e3 d6 3. Nf3 g6 4. h3 Bg7 5. d3 e5 6. g4 e4 7. Nd4 c5 8. Ne2 d5 9. Bg2 h5 10. g5 Ng8 11. Nec3 f5 12. gxf6 Nxf6 13. dxe4 dxe4 14. Nd2 Nc6 15. Qe2 Be6 16. O-O Qb6 17. Ndxe4 Nxe4 18. Nxe4 O-O-O 19. Ng5 Bd5 20. e4 Nd4 21. Qf2 Bc4 22. Re1 Ne2+ 23. Rxe2 Rd1+ 24. Re1 Rxc1 25. e5 Rxe1+ 26. Qxe1 Qxb2 27. Ne4 Bd5 28. Nd6+ Kb8 29. Bxd5 Qd4+ 30. Qf2 Qxd5 31. c4 Qd4 32. Kg2 Qxf2+ 33. Kxf2 Rf8 34. Ke3 Bh6 35. Ke4 Bxf4 36. Kd5 g5 37. e6 Bxd6 38. Kxd6 Rf6 39. Kd7 g4 40. hxg4 hxg4 41. e7 Rf7 42. Ke8 Rxe7+ 43. Kxe7 g3 44. Kd6 g2 45. Kxc5?! { (-75.29 → Mate in 13) Checkmate is now unavoidable. Ke5 was best. } (45. Ke5 g1=Q 46. Kf4 Qd4+ 47. Kf5 Qxc4 48. a3 Qd5+ 49. Kf6 Kc7 50. a4 Kd7) 45... g1=Q+ 46. Kd5 Qe3 47. c5 Kc7 48. a4 Qd3+ 49. Ke5 Kc6 50. a5 Qe3+ 51. Kf5 Kd5 52. Kf6 Qf4+ 53. Ke7 Qe5+ 54. Kf8 Qc7 55. Kg8 Ke6 56. c6 Kf6 57. Kh8 Qg7# { Black wins by checkmate. } 0-1[/pgn]

The first comment miss the fact that it is odd game

1. f4?? { (0.15 → -5.42) Blunder. e4 was best. } (1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 g6)

The second comment suggest a move that is not the best move assuming in losing positions the best move is the move that delay the mate as far as possible.

{ (-75.29 → Mate in 13) Checkmate is now unavoidable. Ke5 was best. } (45. Ke5 g1=Q 46. Kf4 Qd4+ 47. Kf5 Qxc4 48. a3 Qd5+ 49. Kf6 Kc7 50. a4 Kd7)

Facts are that 45.Kc5 is best because other moves lose faster based on chest that searched for the fastest mate.

I do not think it is important to make comments about change in evaluation from -75.29 to some forced mate when both are practically 100% loss but if you make these comments then at least you should verify that the alternative move is better in the meaning that the opponent needs more moves to force checkmate after it.

[syzygy]

Lichess analyse is around 1 second by move and its purpose was to analyse human blitz.
Don't expect to make the difference between a mate in 11 and a mate in 10.

It was better to make no comment instead of making a wrong comment

Can you explain what is wrong about the comment?

[pgn][Event "casual classical game"]
[Site "https://lichess.org/G7O1j1qI"]
[Date "2025.11.29"]
[White "LeelaRookOdds"]
[Black "Yannay_2004"]
[Result "0-1"]
[GameId "G7O1j1qI"]
[UTCDate "2025.11.29"]
[UTCTime "16:00:55"]
[WhiteElo "2000"]
[BlackElo "1500"]
[WhiteTitle "BOT"]
[Variant "From Position"]
[TimeControl "5400+30"]
[ECO "?"]
[Opening "?"]
[Termination "Normal"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/1NBQKBNR w Kkq - 0 1"]
[SetUp "1"]
[Annotator "lichess.org"]

1. f4?? { (0.15 → -5.42) Blunder. e4 was best. } (1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 g6) 1... Nf6 2. e3 d6 3. Nf3 g6 4. h3 Bg7 5. d3 e5 6. g4 e4 7. Nd4 c5 8. Ne2 d5 9. Bg2 h5 10. g5 Ng8 11. Nec3 f5 12. gxf6 Nxf6 13. dxe4 dxe4 14. Nd2 Nc6 15. Qe2 Be6 16. O-O Qb6 17. Ndxe4 Nxe4 18. Nxe4 O-O-O 19. Ng5 Bd5 20. e4 Nd4 21. Qf2 Bc4 22. Re1 Ne2+ 23. Rxe2 Rd1+ 24. Re1 Rxc1 25. e5 Rxe1+ 26. Qxe1 Qxb2 27. Ne4 Bd5 28. Nd6+ Kb8 29. Bxd5 Qd4+ 30. Qf2 Qxd5 31. c4 Qd4 32. Kg2 Qxf2+ 33. Kxf2 Rf8 34. Ke3 Bh6 35. Ke4 Bxf4 36. Kd5 g5 37. e6 Bxd6 38. Kxd6 Rf6 39. Kd7 g4 40. hxg4 hxg4 41. e7 Rf7 42. Ke8 Rxe7+ 43. Kxe7 g3 44. Kd6 g2 45. Kxc5?! { (-75.29 → Mate in 13) Checkmate is now unavoidable. Ke5 was best. } (45. Ke5 g1=Q 46. Kf4 Qd4+ 47. Kf5 Qxc4 48. a3 Qd5+ 49. Kf6 Kc7 50. a4 Kd7) 45... g1=Q+ 46. Kd5 Qe3 47. c5 Kc7 48. a4 Qd3+ 49. Ke5 Kc6 50. a5 Qe3+ 51. Kf5 Kd5 52. Kf6 Qf4+ 53. Ke7 Qe5+ 54. Kf8 Qc7 55. Kg8 Ke6 56. c6 Kf6 57. Kh8 Qg7# { Black wins by checkmate. } 0-1[/pgn]

The first comment miss the fact that it is odd game

1. f4?? { (0.15 → -5.42) Blunder. e4 was best. } (1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 g6)

The second comment suggest a move that is not the best move assuming in losing positions the best move is the move that delay the mate as far as possible.

{ (-75.29 → Mate in 13) Checkmate is now unavoidable. Ke5 was best. } (45. Ke5 g1=Q 46. Kf4 Qd4+ 47. Kf5 Qxc4 48. a3 Qd5+ 49. Kf6 Kc7 50. a4 Kd7)

Facts are that 45.Kc5 is best because other moves lose faster based on chest that searched for the fastest mate.

I do not think it is important to make comments about change in evaluation from -75.29 to some forced mate when both are practically 100% loss but if you make these comments then at least you should verify that the alternative move is better in the meaning that the opponent needs more moves to force checkmate after it.

I see now, you were referring to the comments in the Lichess analyis. I thought you were referring to Vinvin's comment!!

[ydebilloez]

There seems to be a bug in Stockfish.
1. f4?? (0.15 → -5.42)
It assumes that whites starting position is 0.15, while it is something like -5 because of the rook missing. Maybe Stockfish should do a static analysis of the starting position before starting the search.