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Do move-count pruning in probcut

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STC:
LLR: 2.96 (-2.94,2.94) [0.00,5.00]
Total: 4928 W: 1163 L: 1007 D: 2758

LTC:
LLR: 2.95 (-2.94,2.94) [0.00,5.00]
Total: 20368 W: 3441 L: 3238 D: 13689
http://tests.stockfishchess.org/tests/view/5a98bea40ebc590297cc8e5d

Bench: 6361568
This commit is contained in:
VoyagerOne
2018-03-03 12:03:38 +01:00
committed by Stéphane Nicolet
parent f35e52f030
commit b87308692a
1 changed files with 5 additions and 2 deletions
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7
src/search.cpp
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@@ -757,10 +757,13 @@ namespace {
Value rbeta = std::min(beta + 200, VALUE_INFINITE); Value rbeta = std::min(beta + 200, VALUE_INFINITE);
MovePicker mp(pos, ttMove, rbeta - ss->staticEval, &thisThread->captureHistory); MovePicker mp(pos, ttMove, rbeta - ss->staticEval, &thisThread->captureHistory);
int probCutCount = 0;
while ((move = mp.next_move()) != MOVE_NONE) while ( (move = mp.next_move()) != MOVE_NONE
&& probCutCount < depth / ONE_PLY - 3)
if (pos.legal(move)) if (pos.legal(move))
{ {
probCutCount++;
ss->currentMove = move; ss->currentMove = move;
ss->contHistory = thisThread->contHistory[pos.moved_piece(move)][to_sq(move)].get(); ss->contHistory = thisThread->contHistory[pos.moved_piece(move)][to_sq(move)].get();