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Remove Capture Extension

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This revert the patch #3692, probably can be simplified after the introduction of #3838.

Fixed-game test:
ELO: -1.41 +-1.8 (95%) LOS: 5.9%
Total: 20000 W: 1552 L: 1633 D: 16815
Ptnml(0-2): 38, 1242, 7517, 1169, 34
https://tests.stockfishchess.org/tests/view/61bc1a2057a0d0f327c32a3c

STC:
LLR: 2.94 (-2.94,2.94) <-2.25,0.25>
Total: 44528 W: 11619 L: 11478 D: 21431
Ptnml(0-2): 146, 5020, 11771, 5201, 126
https://tests.stockfishchess.org/tests/view/61bc638c57a0d0f327c338fe

LTC:
LLR: 2.94 (-2.94,2.94) <-2.25,0.25>
Total: 34136 W: 8847 L: 8704 D: 16585
Ptnml(0-2): 23, 3475, 9925, 3626, 19
https://tests.stockfishchess.org/tests/view/61bcb24257a0d0f327c34813

closes https://github.com/official-stockfish/Stockfish/pull/3863

Bench: 4054695
This commit is contained in:
bmc4 2021-12-17 21:14:34 -03:00 • committed by Joost VandeVondele
parent 74776dbcd5
commit 2c30956a13
1 changed files with 0 additions and 6 deletions
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6
src/search.cpp
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@ -1123,12 +1123,6 @@ moves_loop: // When in check, search starts here
extension = -2;
}
// Capture extensions for PvNodes and cutNodes
else if ( (PvNode || cutNode)
&& captureOrPromotion
&& moveCount != 1)
extension = 1;
// Check extensions
else if ( givesCheck
&& depth > 6