+327.67 is the maximum if I can recall.
It has something to do with 32768 being a power of 2.
How high of a value can the evaluation bar achieve?
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What about in a realistic sense? Were there games that had an evaluation past absurdly high values like 90?
It'll go to m1, etc for a forced mate
I once analysed my position to get 327.67 but I was pretty certain the software should have displayed a mate-in-n.
I think +327.67 is probably the equivalent of a mate in 20+.
Feb 26, 2022
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#6
From what I've seen, the maximum on Chess.com is +320, which is equivalent to 1-0 (or -320, meaning 0-1). From 320, 0.01 is subtracted for each halfmove required to force checkmate (if checkmate can be forced in the current position) -- for example, a position where it's white to move and mate in 1, the eval would be +319.99. If it's Black to move and White is to mate after, then it's +319.98 (2 halfmoves: black then white).
The above was observed through the charts that can be displayed in the game review tab. The evaluation of the final position (assuming it's mate) will either be +320 or -320, depending on who won.
ItsSkyWasTaken wrote:
From what I've seen, the maximum on Chess.com is +320, which is equivalent to 1-0 (or -320, meaning 0-1). From 320, 0.01 is subtracted for each halfmove required to force checkmate (if checkmate can be forced in the current position) -- for example, a position where it's white to move and mate in 1, the eval would be +319.99. If it's Black to move and White is to mate after, then it's +319.98 (2 halfmoves: black then white).
The above was observed through the charts that can be displayed in the game review tab. The evaluation of the final position (assuming it's mate) will either be +320 or -320, depending on who won.
Perhaps they might have revised the numbers, but I saw +327.67 at least twice.
Hi
Infinity
I was playing an endgame with two rooks vs rook, and at one point, the evaluation bar reached -153.
I first thought its was simply infinite, does that mean a king is worth 320 points?
Simple, the advantage of a checkmate in points is undefined. It’s just checkmate. Assigning a point value advantage for checkmate is unnecessary and what I would say is like dividing by zero.
Here’s my answer: Asking what the point value if a checkmate is is like asking what 1/0 is.
Ok
My record is
Aug 13, 2025
0
#18
ItsSkyWasTaken wrote:
From what I've seen, the maximum on Chess.com is +320, which is equivalent to 1-0 (or -320, meaning 0-1). From 320, 0.01 is subtracted for each halfmove required to force checkmate (if checkmate can be forced in the current position) -- for example, a position where it's white to move and mate in 1, the eval would be +319.99. If it's Black to move and White is to mate after, then it's +319.98 (2 halfmoves: black then white).
The above was observed through the charts that can be displayed in the game review tab. The evaluation of the final position (assuming it's mate) will either be +320 or -320, depending on who won.
So the starting position is a mate in 16000 for white?
In my most recent game that I've analyzed, I noticed that my final move (before my opponent offered a draw) caused the evaluation to reach 40+. The move in question came from my Knight forking their Queen and Bishop, which was then subsequently used to capture their Queen. I understand that the evaluation bar dips and rises depending on how "powerful" either side's position is.
So, the question again is: how far into the positives or negatives can the evaluation bar go?