Sometimes when I analyze games here on chess.com, the accuracy score seems incorrect. For instance, I recently played a blitz game with this result (edit: I won on time by the way):
My opponent had 9 bad moves whereas I had only 4. I have no blunders, my opponent did have one. I do have 1 extra inaccuracy, and 1 fewer "best move". But overall, it seems I have significantly more green compared to red/yellow.
So, I decided to get a sort of second opinion. When I upload the PGN into Lichess, it gives
Opponent
3 inaccuracies
2 mistakes
4 blunders
72 Average centipawn loss
Me
6 inaccuracies
2 mistakes
1 blunder
47 Average centipawn loss
A lower centipawn loss is better, so Lichess's stockfish seems to agree that I played more accurately.
How can these 2 platforms, both using stockfish, come to such different results?
Source: game 28657261317
Stockfish doesn't do anything other than provide the evaluation. The sites decide how to categorize those evaluations and that is a subjective decision and different sites can quantify how that works.
Sometimes when I analyze games here on chess.com, the accuracy score seems incorrect. For instance, I recently played a blitz game with this result (edit: I won on time by the way):
My opponent had 9 bad moves whereas I had only 4. I have no blunders, my opponent did have one. I do have 1 extra inaccuracy, and 1 fewer "best move". But overall, it seems I have significantly more green compared to red/yellow.
So, I decided to get a sort of second opinion. When I upload the PGN into Lichess, it gives
Opponent
3 inaccuracies
2 mistakes
4 blunders
72 Average centipawn loss
Me
6 inaccuracies
2 mistakes
1 blunder
47 Average centipawn loss
A lower centipawn loss is better, so Lichess's stockfish seems to agree that I played more accurately.
How can these 2 platforms, both using stockfish, come to such different results?
Source: game 28657261317