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Remove rank limitation for MinorBehindPawn

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This is a functional simplification.  It seems like the rank restriction
for MinorBehindPawn can be removed.

STC
LLR: 2.96 (-2.94,2.94) [-3.00,1.00]
Total: 61195 W: 13404 L: 13360 D: 34431
http://tests.stockfishchess.org/tests/view/5b47e6f00ebc5978f4be3fc0

LTC
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 31701 W: 5367 L: 5264 D: 21070
http://tests.stockfishchess.org/tests/view/5b48a2cb0ebc5978f4be4769

Bench: 4938702
This commit is contained in:
protonspring 2018-07-14 08:26:57 +02:00 • committed by Stéphane Nicolet
parent d2d4e85f25
commit a6fa6a9e92
1 changed files with 2 additions and 3 deletions
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5
src/evaluate.cpp
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@ -337,9 +337,8 @@ namespace {
else if (bb &= b & ~pos.pieces(Us)) else if (bb &= b & ~pos.pieces(Us))
score += Outpost[Pt == BISHOP][bool(attackedBy[Us][PAWN] & bb)]; score += Outpost[Pt == BISHOP][bool(attackedBy[Us][PAWN] & bb)];
// Bonus when behind a pawn // Knight and Bishop bonus for being right behind a pawn
if ( relative_rank(Us, s) < RANK_5 if (shift<Down>(pos.pieces(PAWN)) & s)
&& (pos.pieces(PAWN) & (s + pawn_push(Us))))
score += MinorBehindPawn; score += MinorBehindPawn;
// Penalty if the piece is far from the king // Penalty if the piece is far from the king