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Do last capture extensions for every single node

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This patch simplifies latest @MJZ1977 elo gainer. Seems like PvNode check in
condition of last capture extension is not needed. Note - even if this is a
simplification it actually causes this extension to be applied more often, thus
strengthening effect of @MJZ1977's patch.

passed STC
http://tests.stockfishchess.org/tests/view/5deb9a3eb7bdefd50db28d0e
LLR: 2.96 (-2.94,2.94) [-3.00,1.00]
Total: 80244 W: 17421 L: 17414 D: 45409

passed LTC
http://tests.stockfishchess.org/tests/view/5deba860b7bdefd50db28d11
LLR: 2.94 (-2.94,2.94) [-3.00,1.00]
Total: 21506 W: 3565 L: 3446 D: 14495

Bench: 5097036
This commit is contained in:
Vizvezdenec 2019-12-07 17:56:33 +03:00 • committed by Stéphane Nicolet
parent 78eeba29a2
commit d00b2ec6bd
1 changed files with 1 additions and 2 deletions
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3
src/search.cpp
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@ -1064,8 +1064,7 @@ moves_loop: // When in check, search starts from here
extension = 1;
// Last captures extension
else if ( PvNode
&& PieceValue[EG][pos.captured_piece()] > PawnValueEg
else if ( PieceValue[EG][pos.captured_piece()] > PawnValueEg
&& pos.non_pawn_material() <= 2 * RookValueMg)
extension = 1;