0.3% of 23 moves is about 0.07 moves. How can you be 0.07 moves inaccurate? Energy! You wasted energy playing moves longer than necessary! Which moves? I don't know - it's probably a series of moves which adds up differently in a different checkmate plan. Example: one 5-square diagonal move is about 0.07 squares longer than a 7-square vertical move. Engines are so clever today 
Q vs P Endgame: 100% Best Moves = 99.7% Accuracy??
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Jul 2, 2021
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Arisktotle wrote:
0.3% of 23 moves is about 0.07 moves. How can you be 0.07 moves inaccurate? Energy! You wasted energy playing moves longer than necessary! Which moves? I don't know - it's probably a series of moves which adds up differently in a different checkmate plan. Example: one 5-square diagonal move is about 0.07 squares longer than a 7-square vertical move. Engines are so clever today
haha that's pretty good!
I was just practicing Q vs P endgame against 3200 Engine, and one of my exercises ended in 100% Best Moves. However, the Chess.com analysis engine apparently thinks a perfect game could use a little tweaking, so it only scored me 99.7% HAHA