reduce depth by 5 in probcut

daniel-monroe · PikaCat-OuO · commit 5eb21bba1907 · 2025-06-04T22:48:58.000+08:00
diff --git a/src/search.cpp b/src/search.cpp
@@ -821,7 +821,7 @@ Value Search::Worker::search(
         assert(probCutBeta < VALUE_INFINITE && probCutBeta > beta);
 
         MovePicker mp(pos, ttData.move, probCutBeta - ss->staticEval, &thisThread->captureHistory);
-        Depth      probCutDepth = std::max(depth - (4 + cutNode), 0);
+        Depth      probCutDepth = std::max(depth - 5, 0);
 
         while ((move = mp.next_move()) != Move::none())
         {

Original file line number	Diff line number	Diff line change
`@@ -821,7 +821,7 @@ Value Search::Worker::search(`
`821`	`821`	`assert(probCutBeta < VALUE_INFINITE && probCutBeta > beta);`
`822`	`822`
`823`	`823`	`MovePicker mp(pos, ttData.move, probCutBeta - ss->staticEval, &thisThread->captureHistory);`
`824`		`- Depth probCutDepth = std::max(depth - (4 + cutNode), 0);`
	`824`	`+ Depth probCutDepth = std::max(depth - 5, 0);`
`825`	`825`
`826`	`826`	`while ((move = mp.next_move()) != Move::none())`
`827`	`827`	`{`