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No functional chnage.
This commit is contained in:
Marco Costalba
2015-03-29 09:24:17 +02:00
parent 61a6e46664
commit 6c42575208
3 changed files with 20 additions and 19 deletions
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10
src/search.cpp
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@@ -339,7 +339,7 @@ namespace {
CounterMovesHistory.clear();
Gains.clear();
Countermoves.clear();
size_t multiPV = Options["MultiPV"];
Skill skill(Options["Skill Level"]);
@@ -960,8 +960,9 @@ moves_loop: // When in check and at SpNode search starts from here
if ( (!PvNode && cutNode)
|| History[pos.piece_on(to_sq(move))][to_sq(move)] < VALUE_ZERO
|| CounterMovesHistory[pos.piece_on(prevMoveSq)][prevMoveSq][pos.piece_on(to_sq(move))][to_sq(move)]
+ History[pos.piece_on(to_sq(move))][to_sq(move)] < VALUE_ZERO)
|| ( History[pos.piece_on(to_sq(move))][to_sq(move)]
+ CounterMovesHistory[pos.piece_on(prevMoveSq)][prevMoveSq]
[pos.piece_on(to_sq(move))][to_sq(move)] < VALUE_ZERO))
ss->reduction += ONE_PLY;
if (move == countermoves[0] || move == countermoves[1])
@@ -1432,11 +1433,10 @@ moves_loop: // When in check and at SpNode search starts from here
cmh.update(pos.moved_piece(quiets[i]), to_sq(quiets[i]), -bonus);
}
// Extra penalty for TT move in previous ply when it gets refuted
if (is_ok((ss-2)->currentMove) && (ss-1)->currentMove == (ss-1)->ttMove)
{
Square prevPrevSq = to_sq((ss-2)->currentMove);
// Extra penalty for TT move in previous ply when it gets refuted
HistoryStats& ttMoveCmh = CounterMovesHistory[pos.piece_on(prevPrevSq)][prevPrevSq];
ttMoveCmh.update(pos.piece_on(prevSq), prevSq, -bonus - 2 * depth / ONE_PLY - 1);
}