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Rook tweaks in evaluation

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Some small changes in evaluation to try to convince Stockfish to centralize
her rooks more in middle game and avoid trapping them in the corners. Joint
work by SFisGOD and snicolet.

STC:
LLR: 2.96 (-2.94,2.94) [0.00,4.00]
Total: 99826 W: 21895 L: 21341 D: 56590
http://tests.stockfishchess.org/tests/view/5bdc3e280ebc595e0ae277df

LTC:
LLR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 21467 W: 3541 L: 3322 D: 14604
http://tests.stockfishchess.org/tests/view/5bdc9ff30ebc595e0ae28119

Bench: 3631608
This commit is contained in:
Stéphane Nicolet
2018-11-02 22:04:43 +01:00
committed by Stéphane Nicolet
parent 3f1eb85a1c
commit 8bb7a73708
2 changed files with 4 additions and 4 deletions
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2
src/psqt.cpp
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@@ -67,7 +67,7 @@ constexpr Score Bonus[][RANK_NB][int(FILE_NB) / 2] = {
{ S(-47,-55), S( -7,-32), S(-17,-36), S(-29,-17) }
},
{ // Rook
{ S(-25, 0), S(-16, 0), S(-16, 0), S(-9, 0) },
{ S(-25, 0), S(-16, 0), S(-10, 5), S( 6, 5) },
{ S(-21, 0), S( -8, 0), S( -3, 0), S( 0, 0) },
{ S(-21, 0), S( -9, 0), S( -4, 0), S( 2, 0) },
{ S(-22, 0), S( -6, 0), S( -1, 0), S( 2, 0) },