chessforyou Bettina&Terry77
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chessforyou Bettina&Terry77
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Latest abrok Development Version December 1st (SF The gift that keeps on giving )
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Subject: Latest abrok Development Version December 1st (SF The gift that keeps on giving )
Sun Dec 01, 2019 7:51 pm
!! latest version !!
Windows x64 for Haswell CPUs
Windows x64 for modern computers
Windows x64
Windows 32
Linux x64 for Haswell CPUs
Linux x64 for modern computers
Linux x64
Author: Alain SAVARD
Date: Sun Dec 1 19:12:39 2019 +0100
Timestamp: 1575223959
King proximity tweak for passed pawns
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
Elo +2.34
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
Elo +1.97
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
https://github.com/official-stockfish/Stockfish/pull/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
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