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Bonus for reachable outpost

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Give a bonus for outpost squares which in reach of a bishop or knight.

STC:
LLR: 2.96 (-2.94,2.94) [0.00,5.00]
Total: 22725 W: 4570 L: 4339 D: 13816

LTC:
LLR: 2.96 (-2.94,2.94) [0.00,5.00]
Total: 15019 W: 2333 L: 2157 D: 10529

Bench: 8503181

Resolves #495
This commit is contained in:
Stefan Geschwentner
2015-11-14 06:30:50 -08:00
committed by Joona Kiiski
parent 76ed0ab501
commit cccf3c815c
3 changed files with 28 additions and 7 deletions
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4
src/pawns.cpp
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@@ -116,7 +116,7 @@ namespace {
Bitboard ourPawns = pos.pieces(Us , PAWN);
Bitboard theirPawns = pos.pieces(Them, PAWN);
e->passedPawns[Us] = 0;
e->passedPawns[Us] = e->pawnAttacksSpan[Us] = 0;
e->kingSquares[Us] = SQ_NONE;
e->semiopenFiles[Us] = 0xFF;
e->pawnAttacks[Us] = shift_bb<Right>(ourPawns) | shift_bb<Left>(ourPawns);
@@ -133,6 +133,8 @@ namespace {
// This file cannot be semi-open
e->semiopenFiles[Us] &= ~(1 << f);
e->pawnAttacksSpan[Us] |= pawn_attack_span(Us, s);
// Flag the pawn
neighbours = ourPawns & adjacent_files_bb(f);
doubled = ourPawns & forward_bb(Us, s);