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Tweak Mobility Area

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Only consider pawns and the king as restricting.
This commit is contained in:
jhellis3
2013-05-01 02:37:50 -05:00
parent 156635749b
commit 7323231786
1 changed files with 1 additions and 1 deletions
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src/evaluate.cpp
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@@ -690,7 +690,7 @@ Value do_evaluate(const Position& pos, Value& margin, Info& ei) {
Score score = mobility = SCORE_ZERO;
// Do not include in mobility squares protected by enemy pawns or occupied by our pieces
const Bitboard mobilityArea = ~(ei.attackedBy[Them][PAWN] | pos.pieces(Us));
const Bitboard mobilityArea = ~(ei.attackedBy[Them][PAWN] | pos.pieces(Us, PAWN, KING));
score += evaluate_pieces<KNIGHT, Us, Trace>(pos, ei, mobility, mobilityArea);
score += evaluate_pieces<BISHOP, Us, Trace>(pos, ei, mobility, mobilityArea);