King proximity tweak #2435
Closed
King proximity tweak #2435
Conversation
This file contains 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
locutus2
referenced
this pull request
in Rocky640/Stockfish
Dec 1, 2019
|
Merged via f0047ce, congrats :-) |
MichaelB7
pushed a commit
to MichaelB7/Stockfish
that referenced
this pull request
Dec 7, 2019
Decrease slightly the penalty for opponent king distance to passed pawn. Instead of 5:2 ratio (or 20:8) we now have 19:8 STC http://tests.stockfishchess.org/tests/view/5de281b2727dc1d26718a673 LLR: 2.95 (-2.94,2.94) [-1.50,4.50] Total: 28638 W: 6297 L: 6104 D: 16237 LTC http://tests.stockfishchess.org/tests/view/5de2a2ff727dc1d26718a67b LLR: 2.95 (-2.94,2.94) [0.00,3.50] Total: 59586 W: 9766 L: 9429 D: 40391 Where to go from here: Further tests will try a similar tweak on the friendly king proximity penalty, because recent experiments indicate that this penalty is quite sensitive, but I wanted to try first on the larger term. Closes official-stockfish#2435 bench: 5258928 --------------- Increasing the penalty ratio to 21:8 was neutral. http://tests.stockfishchess.org/tests/view/5de2814d727dc1d26718a671 Decreasing the penalty ratio a bit more to 9:4 seems less promising http://tests.stockfishchess.org/tests/view/5de2f4c2727dc1d26718a691 http://tests.stockfishchess.org/tests/view/5de32ecc727dc1d26718a6b0
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
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Outdated suggestions cannot be applied.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.
Decrease slightly the penalty for opponent king distance to passed pawn
Instead of 5:2 ratio (or 20:8) we now have 19:8
passed STC
http://tests.stockfishchess.org/tests/view/5de281b2727dc1d26718a673
LLR: 2.95 (-2.94,2.94) [-1.50,4.50]
Total: 28638 W: 6297 L: 6104 D: 16237
passed LTC
http://tests.stockfishchess.org/tests/view/5de2a2ff727dc1d26718a67b
LLR: 2.95 (-2.94,2.94) [0.00,3.50]
Total: 59586 W: 9766 L: 9429 D: 40391
bench; 5258928
Increasing the penalty ratio to 21:8 was neutral.
http://tests.stockfishchess.org/tests/view/5de2814d727dc1d26718a671
Decreasing the penalty ratio a bit more to 9:4 seems less promising
http://tests.stockfishchess.org/tests/view/5de2f4c2727dc1d26718a691
http://tests.stockfishchess.org/tests/view/5de32ecc727dc1d26718a6b0
Where to go from here:
Further tests will try a similar tweak on the friendly king proximity penalty,
because recent experiments indicate that this penalty is quite sensitive,
but I wanted to try first on the larger term.