FutilityValue formula tweak

FauziAkram · PikaCat-OuO · commit fbaa5385a89c · 2025-02-14T15:27:15.000+08:00
diff --git a/src/search.cpp b/src/search.cpp
@@ -968,6 +968,9 @@ Value Search::Worker::search(
 
                 Value futilityValue = ss->staticEval + (bestMove ? 96 : 215) + 120 * lmrDepth;
 
+                if (bestValue < ss->staticEval - 150 && lmrDepth < 7)
+                    futilityValue += 108;
+
                 // Futility pruning: parent node
                 if (!ss->inCheck && lmrDepth < 10 && futilityValue <= alpha)
                 {

Original file line number	Diff line number	Diff line change
`@@ -968,6 +968,9 @@ Value Search::Worker::search(`
`968`	`968`
`969`	`969`	`Value futilityValue = ss->staticEval + (bestMove ? 96 : 215) + 120 * lmrDepth;`
`970`	`970`
	`971`	`+ if (bestValue < ss->staticEval - 150 && lmrDepth < 7)`
	`972`	`+ futilityValue += 108;`
	`973`	`+`
`971`	`974`	`// Futility pruning: parent node`
`972`	`975`	`if (!ss->inCheck && lmrDepth < 10 && futilityValue <= alpha)`
`973`	`976`	`{`