From 0388a79799902e5640c28f43d29f1597a14b0f24 Mon Sep 17 00:00:00 2001
From: eug-vs <eugene@eug-vs.xyz>
Date: Fri, 27 Jan 2023 15:29:08 +0300
Subject: fix: correctly update aspiration window

---
 src/board/engine.rs | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/board/engine.rs')

diff --git a/src/board/engine.rs b/src/board/engine.rs
index 58c9eb5..985dfb7 100644
--- a/src/board/engine.rs
+++ b/src/board/engine.rs
@@ -306,10 +306,12 @@ impl Board {
                 beta = search_result.0 + window_size;
             } else if search_result.0 <= alpha { // Alpha-cutoff
                 println!("Alpha cutoff {} <= {:?}", search_result.0, (alpha, beta));
+                beta = alpha;
                 alpha = search_result.0 - window_size * 4.0;
                 continue;
             } else if search_result.0 >= beta { // Beta-cutoff
                 println!("Beta cutoff {:?} <= {}", (alpha, beta), search_result.0);
+                alpha = beta;
                 beta = search_result.0 + window_size * 4.0;
                 continue;
             } else {
-- 
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