From 1039ea037f7b7f05b0530766b4d120d8224a6ae9 Mon Sep 17 00:00:00 2001
From: sigmasternchen <git@sigma-star.io>
Date: Thu, 31 Oct 2024 21:21:47 +0100
Subject: [PATCH] fix: index out of range error in PeSTO heuristic

---
 src/Engine/PeSTO.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Engine/PeSTO.php b/src/Engine/PeSTO.php
index 9e767c0..22ec908 100644
--- a/src/Engine/PeSTO.php
+++ b/src/Engine/PeSTO.php
@@ -222,7 +222,7 @@ class PeSTO implements Heuristic {
 
         $index = $rank * 8 + $file;
         if ($piece->getSide() == Side::BLACK) {
-            $index = 64 - $index;
+            $index = 63 - $index;
         }
 
         return [