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Simplify quietMoveMalus malus

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Use a simple depth instead of depth + 1 in the quietMoveMalus formula.

Passed STC:
https://tests.stockfishchess.org/tests/view/65636bf0136acbc57354b662
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 105248 W: 26680 L: 26532 D: 52036
Ptnml(0-2): 409, 12590, 26481, 12732, 412

Passed LTC:
https://tests.stockfishchess.org/tests/view/6563b5db136acbc57354bcab
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 204204 W: 50200 L: 50166 D: 103838
Ptnml(0-2): 123, 23331, 55145, 23395, 108

closes https://github.com/official-stockfish/Stockfish/pull/4893

Bench: 1717495
This commit is contained in:
FauziAkram 2023-11-29 13:47:25 +03:00 • committed by Disservin
parent 883163395e
commit 7dc40ac643
1 changed files with 4 additions and 4 deletions
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8
src/search.cpp
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@ -1687,7 +1687,7 @@ void update_all_stats(const Position& pos,
PieceType captured;
int quietMoveBonus = stat_bonus(depth + 1);
int quietMoveMalus = stat_malus(depth + 1);
int quietMoveMalus = stat_malus(depth);
if (!pos.capture_stage(bestMove))
{
@ -1898,9 +1898,9 @@ string UCI::pv(const Position& pos, Depth depth) {
}
// Called in case we have no ponder move
// before exiting the search, for instance, in case we stop the search during a
// fail high at root. We try hard to have a ponder move to return to the GUI,
// Called in case we have no ponder move before exiting the search,
// for instance, in case we stop the search during a fail high at root.
// We try hard to have a ponder move to return to the GUI,
// otherwise in case of 'ponder on' we have nothing to think about.
bool RootMove::extract_ponder_from_tt(Position& pos) {