Why are forced mates sometimes counted as a mistake or a blunder?

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protanly

Why does the engine decide to sometimes evaluate things like Mate in 3 as a mistake instead of a blunder? I really don't see the difference between the two. Allowing your opponent to force checkmate with best play means that the position is losing no matter how good you were doing beforehand.

So my question is why are some forced mates evaluated as a mistake and some of them evaluated as a blunder, why is this the case and what kind of things go into making the engine evaluate a forced mate as a mistake instead of a blunder?

notmtwain
protanly wrote:

Why does the engine decide to sometimes evaluate things like Mate in 3 as a mistake instead of a blunder? I really don't see the difference between the two. Allowing your opponent to force checkmate with best play means that the position is losing no matter how good you were doing beforehand.

 

So my question is why are some forced mates evaluated as a mistake and some of them evaluated as a blunder, why is this the case and what kind of things go into making the engine evaluate a forced mate as a mistake instead of a blunder?

 

Perhaps you have an example, where you can post a screenshot? 

Mate in whatever is not usually considered a blunder.

I believe that the computer defines a blunder a move which allows a negative change in the evaluation of more than 2 points. However, there is something that says that the definitions don't apply when the evaluation is already very high (i.e, the difference between an evaluation of +53 and +48 isn't as sigificant), so it won't classify those kind of changes as blunders.

Again, a screenshot would be useful. Perhaps you could use the bug reporting tool also.

 

hadriannnnnnnn
notmtwain wrote:
protanly wrote:

Why does the engine decide to sometimes evaluate things like Mate in 3 as a mistake instead of a blunder? I really don't see the difference between the two. Allowing your opponent to force checkmate with best play means that the position is losing no matter how good you were doing beforehand.

So my question is why are some forced mates evaluated as a mistake and some of them evaluated as a blunder, why is this the case and what kind of things go into making the engine evaluate a forced mate as a mistake instead of a blunder?

Perhaps you have an example, where you can post a screenshot?

Mate in whatever is not usually considered a blunder.

I believe that the computer defines a blunder a move which allows a negative change in the evaluation of more than 2 points. However, there is something that says that the definitions don't apply when the evaluation is already very high (i.e, the difference between an evaluation of +53 and +48 isn't as sigificant), so it won't classify those kind of changes as blunders.

Again, a screenshot would be useful. Perhaps you could use the bug reporting tool also.

Here's an example