Game Review Endgame Analysis

Hi everyone,

In the following game after 40...Qf5 the game review analysis assigned a mistake and calculated a draw. If you analyse the position with an engine It gives an advantage of around 5. Here you can find the game review https://www.chess.com/analysis/game/pgn/2SviQBreK8?tab=review

I thought the problem was the engine depth used for the game review, so I increased it to the maximum but the analysis did not change even if it took longer.

Is this a known bug or there is a way to increase the game review accurancy?

Thank you

What engine were you using for your separate calculation?

I don't think it is a bug.

There are 11 pieces on the board at that point so there is no tablebase or definitive move order available.

However, the max analysis running Stockfish 15.1 NNUE says it gets up to depth 98 when it concludes that the position evaluation is 0.00 after 40 .. Qf5.

/ Compare the analysis with its evaluation of an easy win after 40 .. a4.

Thank you,

I was using stockfish 11 at depth 22.

I'll try and check later when I get to a full computer, but it could be a horizon issue or Stockfish 15 NNUE finds a resource Stockfish 11 doesn't.

Thanks, with your stockfish 15.1 NNUE analysis and also in my game review the move that draws is 40 Kg3. In both cases the engine does not show the continuation. I was interested in how the draw is reached (threefold repetition, 50 move rule, Perpetual check etc).

I am not confident with chess engine and I was not even aware that depth 98 can be reached.

Best

OK, it has nothing to do with the engine. I'm not sure how I didn't see this before. On move 37 and move 39 the same position is on the board. After Qf5 white moving Kg3 would have been a draw by triple repetition of position, so a draw and the evaluation of 0.0 is correct.