Add LMR

2025-02-08 19:49:39 +02:00
parent 614590b18e
commit a69c697892
1 changed files with 6 additions and 1 deletions
--- a/src/search/negamax.rs
+++ b/src/search/negamax.rs
@@ -102,11 +102,16 @@ pub fn negamax(
        let score = if legal_moves == 1 {
            -negamax(game, -beta, -alpha, depth - 1, plies + 1, time, nodes, true)?
        } else {
+            let mut lmr_reduction = 0;
+            if !in_check && !mv.is_capture() && depth > 2 && legal_moves > 3 {
+                lmr_reduction = 2;
+            }
+
            let mut score = -negamax(
                game,
                -alpha - 1,
                -alpha,
-                depth - 1,
+                depth - 1 - lmr_reduction,
                plies + 1,
                time,
                nodes,