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Merge commit '3c379e55d9d92a5704632c6255e72892a4db9a2f' into cluster

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This is the last commit before there are more conflicts.
This commit is contained in:
Steinar H. Gunderson
2025-12-25 15:22:41 +01:00
parent cefd309d92 3c379e55d9
commit 8f9e750782
1 changed files with 6 additions and 8 deletions
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src/search.cpp
+6 -8
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@@ -80,10 +80,10 @@ Value to_corrected_static_eval(Value v, const Worker& w, const Position& pos) {
} }
// History and stats update bonus, based on depth // History and stats update bonus, based on depth
int stat_bonus(Depth d) { return std::clamp(186 * d - 285, 20, 1524); } int stat_bonus(Depth d) { return std::clamp(191 * d - 285, 20, 1412); }
// History and stats update malus, based on depth // History and stats update malus, based on depth
int stat_malus(Depth d) { return (d < 4 ? 707 * d - 260 : 2073); } int stat_malus(Depth d) { return (d < 4 ? 727 * d - 260 : 1908); }
// Add a small random component to draw evaluations to avoid 3-fold blindness // Add a small random component to draw evaluations to avoid 3-fold blindness
Value value_draw(size_t nodes) { return VALUE_DRAW - 1 + Value(nodes & 0x2); } Value value_draw(size_t nodes) { return VALUE_DRAW - 1 + Value(nodes & 0x2); }
@@ -1431,11 +1431,9 @@ moves_loop: // When in check, search starts here
+ 64 * (!ss->inCheck && bestValue <= ss->staticEval - 107) + 64 * (!ss->inCheck && bestValue <= ss->staticEval - 107)
+ 147 * (!(ss - 1)->inCheck && bestValue <= -(ss - 1)->staticEval - 75)); + 147 * (!(ss - 1)->inCheck && bestValue <= -(ss - 1)->staticEval - 75));
// Proportional to "how much damage we have to undo"
// proportional to "how much damage we have to undo" if ((ss - 1)->statScore < -7850)
if ((ss - 1)->statScore < -8000) bonus += std::clamp(-(ss - 1)->statScore / 100, 0, 224);
bonus += std::clamp(-(ss - 1)->statScore / 100, 0, 250);
update_continuation_histories(ss - 1, pos.piece_on(prevSq), prevSq, update_continuation_histories(ss - 1, pos.piece_on(prevSq), prevSq,
stat_bonus(depth) * bonus / 100); stat_bonus(depth) * bonus / 100);
@@ -1855,7 +1853,7 @@ void update_all_stats(const Position& pos,
if (!pos.capture_stage(bestMove)) if (!pos.capture_stage(bestMove))
{ {
int bestMoveBonus = bestValue > beta + 164 ? quietMoveBonus // larger bonus int bestMoveBonus = bestValue > beta + 166 ? quietMoveBonus // larger bonus
: stat_bonus(depth); // smaller bonus : stat_bonus(depth); // smaller bonus
update_quiet_stats(pos, ss, workerThread, bestMove, bestMoveBonus); update_quiet_stats(pos, ss, workerThread, bestMove, bestMoveBonus);