kate/BadFish
1
0
Fork 0
mirror of https://github.com/sockspls/badfish synced 2025-04-29 16:23:09 +00:00
Code Issues Releases Wiki Activity

Simplify stand pat adjustement

Browse source 
Remove && !PvNode condition for stand pat adjustement in quiescence search.

Passed non-regression STC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 108544 W: 28228 L: 28085 D: 52231
Ptnml(0-2): 389, 12902, 27554, 13031, 396
https://tests.stockfishchess.org/tests/view/66bb402e4ff211be9d4ee688

Passed non-regression LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 193014 W: 48796 L: 48751 D: 95467
Ptnml(0-2): 188, 21481, 53116, 21542, 180
https://tests.stockfishchess.org/tests/view/66bc78774ff211be9d4ee88f

closes https://github.com/official-stockfish/Stockfish/pull/5538

Bench 1787360
This commit is contained in:
Nonlinear2 2024-08-16 22:54:05 +02:00 • committed by Joost VandeVondele
parent 87814d2fb8
commit 6cf7f300ac
2 changed files with 2 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
AUTHORS
View file

@ -171,6 +171,7 @@ Niklas Fiekas (niklasf)
Nikolay Kostov (NikolayIT) Nikolay Kostov (NikolayIT)
Norman Schmidt (FireFather) Norman Schmidt (FireFather)
notruck notruck
Nour Berakdar (Nonlinear)
Ofek Shochat (OfekShochat, ghostway) Ofek Shochat (OfekShochat, ghostway)
Ondrej Mosnáček (WOnder93) Ondrej Mosnáček (WOnder93)
Ondřej Mišina (AndrovT) Ondřej Mišina (AndrovT)

2
src/search.cpp
View file

@ -1502,7 +1502,7 @@ Value Search::Worker::qsearch(Position& pos, Stack* ss, Value alpha, Value beta)
// Stand pat. Return immediately if static value is at least beta // Stand pat. Return immediately if static value is at least beta
if (bestValue >= beta) if (bestValue >= beta)
{ {
if (std::abs(bestValue) < VALUE_TB_WIN_IN_MAX_PLY && !PvNode) if (std::abs(bestValue) < VALUE_TB_WIN_IN_MAX_PLY)
bestValue = (3 * bestValue + beta) / 4; bestValue = (3 * bestValue + beta) / 4;
if (!ss->ttHit) if (!ss->ttHit)
ttWriter.write(posKey, value_to_tt(bestValue, ss->ply), false, BOUND_LOWER, ttWriter.write(posKey, value_to_tt(bestValue, ss->ply), false, BOUND_LOWER,