kate/BadFish
1
0
Fork 0
mirror of https://github.com/sockspls/badfish synced 2025-04-30 16:53:09 +00:00
Code Issues Releases Wiki Activity

Simplify cmh pruning

Browse source 
Simplify cmh pruning by removing PvNode exception

STC:
LLR: 2.96 (-2.94,2.94) [-3.00,1.00]
Total: 9935 W: 2330 L: 2184 D: 5421
http://tests.stockfishchess.org/tests/view/5b587dc00ebc5902bdb88424

LTC:
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 20635 W: 3585 L: 3464 D: 13586
http://tests.stockfishchess.org/tests/view/5b58910a0ebc5902bdb885b9

Closes https://github.com/official-stockfish/Stockfish/pull/1711

Bench: 4905530
This commit is contained in:
VoyagerOne 2018-07-27 16:23:05 +02:00 • committed by Stéphane Nicolet
parent 9ca014df49
commit 6184d2b2ac
1 changed files with 1 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
src/search.cpp
View file

@ -935,8 +935,7 @@ moves_loop: // When in check, search starts from here
int lmrDepth = std::max(newDepth - reduction<PvNode>(improving, depth, moveCount), DEPTH_ZERO) / ONE_PLY;
// Countermoves based pruning (~20 Elo)
if ( lmrDepth < 4
&& (lmrDepth < 3 || ((ss - 1)->statScore > 0 && !PvNode))
if ( lmrDepth <= ((ss-1)->statScore > 0 ? 3 : 2)
&& (*contHist[0])[movedPiece][to_sq(move)] < CounterMovePruneThreshold
&& (*contHist[1])[movedPiece][to_sq(move)] < CounterMovePruneThreshold)
continue;