Expand of Stefan Geschwentner's original idea: we always do LMR for captures at cutnodes.
Passed STC
http://tests.stockfishchess.org/tests/view/
5d5b2f8e0ebc5925cf1111b8
LLR: 2.96 (-2.94,2.94) [0.50,4.50]
Total: 36026 W: 8122 L: 7779 D: 20125
Passed LTC
http://tests.stockfishchess.org/tests/view/
5d5b40c80ebc5925cf111353
LLR: 3.22 (-2.94,2.94) [0.00,3.50]
Total: 133502 W: 22508 L: 21943 D: 89051
Closes https://github.com/official-stockfish/Stockfish/pull/2273
Bench:
3494372
&& moveCount > 1 + 3 * rootNode
&& ( !captureOrPromotion
|| moveCountPruning
&& moveCount > 1 + 3 * rootNode
&& ( !captureOrPromotion
|| moveCountPruning
- || ss->staticEval + PieceValue[EG][pos.captured_piece()] <= alpha))
+ || ss->staticEval + PieceValue[EG][pos.captured_piece()] <= alpha
+ || cutNode))
{
Depth r = reduction(improving, depth, moveCount);
{
Depth r = reduction(improving, depth, moveCount);