The analysis tool can't count

And when the majority of your users are under 1000 and under the age of 15 it's no wonder...

Close to the same game, but 99.7 this time: I used 29 seconds for twenty moves. Probably get reported. All Greco.

https://www.chess.com/analysis/game/live/13480916501

That Greco guy got away with murder.

I agree with the post I have faced the same.

The math continues to mystify.

Higher "Best move %", I bet.

One I posted awhile ago.

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That is an impressive number of blunders for over 90% "accuracy". Or do I mean an impressive "accuracy" for 6 blunders?

FYI, comment #1 game analyzed depth=26, in Beta with CEE CAPS2 values:

So today I'm looking at some analysis.

My opponent's moves that send the game from 0.00 to 2.86 in my favor isn't a blunder (it's a mistake).

Same opponent, different game, a move of his that changes it from -13.6 in my favor to mate in 4 is classed as a blunder.

Really silly.

In reality the first move I mention is a game losing blunder, and the 2nd should be completely ignored... every move loses so it doesn't matter (I queened in an endgame).

Yeah, I titled my topic "I don't need your pity chess.com"

Giving me >90% on a game that I should have lost 6 times (if we assume the blunders are actual blunders).

I believe that forced moves aren't listed, as they don't really count it as a "move" if you can't do anything else

Earlier in this thread it was noted that I made more moves than my opponent. The difference was the number of moves with no choice.

+1

I agree.

Another interesting example of the meaningless of the accuracy percentage. Here is a (probably faultless) "64% accuracy" win in 11 moves. No inaccuracies, no mistakes, no blunders, 0.07 CP error, but "9.1% best move". Even with the creative arithmetic mentioned earlier, this last stat was a bit unlucky as 2 or 3 of the 4 non-book moves appear to be top computer choices now (must have been just 1 when it did the analysis).

And at the other end, I was docked a mere 0.6 for missing a win in a game lasting 18 moves. How do I know it was 0.6? I’ve played the entire game before without missing the quicker win (see post #3).

Today the analysis tool has got round any problems with counting by saying its "not a number".

It seems to be extremely rare that the analysis tool awards me a !! "brilliant". So it was nice to get one here.

Amusingly the move is a capture of a loose piece. But I do see what it means - to really justify it, I had to infer that the a-pawn was not too dangerous (it wasn't).

I had a 100% accuracy game with "22% best moves" yesterday.  9 moves, 7 in book.