Keep history bonus increasing with depth after the maximum, even if i…

…t's 5 by 5
lynx-chess · Dec 8, 2023 · 1734153 · 1734153
1 parent abb1743
commit 1734153
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/Lynx/EvaluationConstants.cs b/src/Lynx/EvaluationConstants.cs
@@ -967,8 +967,8 @@ static EvaluationConstants()
             }
 
             HistoryBonus[searchDepth] = Math.Min(
-                Configuration.EngineSettings.History_MaxMoveRawBonus,
-                (4 * searchDepth * searchDepth) + (120 * searchDepth) - 120);   // Sirius, originally from Berserk
+                Configuration.EngineSettings.History_MaxMoveRawBonus + (5 * searchDepth),   // Making sure it still increases after reaching the threshold
+                (4 * searchDepth * searchDepth) + (120 * searchDepth) - 120);               // Formula suggested by Sirius author, originally from Berserk
         }
     }