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Revert trapped rook bug fix

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It seems that do  not limiting checking the
trapped rook only on rank 1 improves the
score.

At long TC
LLR: 2.97 (-2.94,2.94)
Total: 6581 W: 1346 L: 1204 D: 4031

bench: 4985012
This commit is contained in:
Marco Costalba
2013-05-15 00:06:11 +02:00
parent 049e5ca191
commit 1a34496761
1 changed files with 1 additions and 2 deletions
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3
src/evaluate.cpp
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@@ -600,8 +600,7 @@ Value do_evaluate(const Position& pos, Value& margin) {
// Penalize rooks which are trapped inside a king. Penalize more if
// king has lost right to castle.
if ( ((file_of(ksq) < FILE_E) == (file_of(s) < file_of(ksq)))
&& rank_of(ksq) == rank_of(s)
&& relative_rank(Us, ksq) == RANK_1
&& (rank_of(ksq) == rank_of(s) || relative_rank(Us, ksq) == RANK_1)
&& !ei.pi->half_open_on_side(Us, file_of(ksq), file_of(ksq) < FILE_E))
score -= (TrappedRookPenalty - make_score(mob * 8, 0)) * (pos.can_castle(Us) ? 1 : 2);
}