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Tune outposts #430

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Tune outposts #430

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5 changes: 3 additions & 2 deletions src/evaluate.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -144,8 +144,8 @@ namespace {
// Outpost[knight/bishop][supported by pawn] contains bonuses for knights and
// bishops outposts, bigger if outpost piece is supported by a pawn.
const Score Outpost[][2] = {
{ S(28, 7), S(42,11) }, // Knights
{ S(12, 3), S(18, 5) } // Bishops
{ S(42,11), S(63,17) }, // Knights
{ S(18, 5), S(27, 8) } // Bishops
};

// Threat[defended/weak][minor/major attacking][attacked PieceType] contains
Expand Down Expand Up @@ -296,6 +296,7 @@ namespace {
{
// Bonus for outpost square
if ( relative_rank(Us, s) >= RANK_4
&& relative_rank(Us, s) <= RANK_6
&& !(pos.pieces(Them, PAWN) & pawn_attack_span(Us, s)))
score += Outpost[Pt == BISHOP][!!(ei.attackedBy[Us][PAWN] & s)];

Expand Down