static_evaluation: add endgame scaling - #200
Merged
Merged
Conversation
Meltdown has always had an issue with engame evaluation. Often engines would flag a position as draw quite early while Meltdown would still believe that it was a winable position. This commit adds piece endgame awareness to our static evaluation. I've ran a few drawn positions where "old Meltdown" would believe they were clearly winning. Now we know that they're clearly drawn. Also we apply bonus / penalty based on positions that are often won / lost based on remaining material. This is better than simple piece evaluation as we're now context aware as well! Bench 809831 Signed-off-by: Hans Binderup <hbinderup94@gmail.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Meltdown has always had an issue with endgame evaluation. Often engines would flag a position as drawn quite early while Meltdown would still believe that it was a winnable position.
This commit adds piece endgame awareness to our static evaluation. I've ran a few drawn positions where "old Meltdown" would believe they were clearly winning. Now we know that they're clearly drawn.
Also we apply bonus / penalty based on positions that are often won / lost based on remaining material. This is better than simple piece evaluation as we're now context aware as well!
Bench 809831