Query about reported accuracy in a game

Hi guys, apologies if this is off-topic but the lichess anaylsis board reports 82% accuracy on this game:



It's an 11 move game with 0 inaccuracies, mistakes or blunders which follows stockfish right through to the end. The only move that isn't the best engine move is move 6 and its a top engine move (#4 from a selection of best moves which results in +1.6 rather than +1.8 which the top move provides)

Does anyone know how it could be possible that the accuracy is only 82%? Seems shockingly low to me? (I understand the calculation is totally different but for reference chess.com reports an accuracy of 97+ percent which seems far more realistic on the face of it)

Thank you friends!

lichess.org/page/accuracy gives a description of how the accuracy calculation in Lichess works. I am not aware of a comparable description of the chess.com algorithm hence I cannot explain the differences.

In your game you had moves that dropped the engine evaluation significantly (move 5 dropped from +2.5 to +1.7 centipawns and your move 8 dropped the evaluation from +4.6 to +2.5). I guess those drops resulted in the reduced accuracy.

Of course you are now asking why then those moves were not listed as inaccuracies as well. The best answer I can give to that is that apparently the criteria to assign inaccuracies/mistakes/blunders are not related directly to the accuracy computation and thus those moves have not been detected.

It's an 11-move game, fer cryin' out loud!