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b6d1102)
Do no LMR for the first four moves if at root node.
STC:
LLR: 2.95 (-2.94,2.94) [0.50,4.50]
Total: 19686 W: 4524 L: 4261 D: 10901
http://tests.stockfishchess.org/tests/view/
5cd3577b0ebc5925cf04a089
LTC:
LLR: 2.95 (-2.94,2.94) [0.00,3.50]
Total: 88335 W: 15193 L: 14766 D: 58376
http://tests.stockfishchess.org/tests/view/
5cd35e600ebc5925cf04a1c3
Bench:
3184182
// Step 16. Reduced depth search (LMR). If the move fails high it will be
// re-searched at full depth.
if ( depth >= 3 * ONE_PLY
// Step 16. Reduced depth search (LMR). If the move fails high it will be
// re-searched at full depth.
if ( depth >= 3 * ONE_PLY
+ && moveCount > 1 + 3 * rootNode
&& ( !captureOrPromotion
|| moveCountPruning
|| ss->staticEval + PieceValue[EG][pos.captured_piece()] <= alpha))
&& ( !captureOrPromotion
|| moveCountPruning
|| ss->staticEval + PieceValue[EG][pos.captured_piece()] <= alpha))