🔍 Use spsa tuned search values (#543)

lynx-chess · Dec 25, 2023 · c0724ef · c0724ef
1 parent 760b924
commit c0724ef
Show file tree

Hide file tree

Showing 2 changed files with 26 additions and 26 deletions.
diff --git a/src/Lynx.Cli/appsettings.json b/src/Lynx.Cli/appsettings.json
@@ -20,27 +20,27 @@
 
     "LMR_MinDepth": 3,
     "LMR_MinFullDepthSearchedMoves": 4,
-    "LMR_Base": 0.77,
-    "LMR_Divisor": 2.67,
+    "LMR_Base": 0.74,
+    "LMR_Divisor": 2.94,
 
     "NMP_MinDepth": 3,
     "NMP_BaseDepthReduction": 1,
 
-    "AspirationWindow_Delta": 50,
-    "AspirationWindow_MinDepth": 6,
+    "AspirationWindow_Delta": 16,
+    "AspirationWindow_MinDepth": 7,
 
-    "RFP_MaxDepth": 6,
-    "RFP_DepthScalingFactor": 75,
+    "RFP_MaxDepth": 4,
+    "RFP_DepthScalingFactor": 85,
 
-    "Razoring_MaxDepth": 2,
-    "Razoring_Depth1Bonus": 125,
-    "Razoring_NotDepth1Bonus": 175,
+    "Razoring_MaxDepth": 3,
+    "Razoring_Depth1Bonus": 106,
+    "Razoring_NotDepth1Bonus": 156,
 
-    "IIR_MinDepth": 4,
+    "IIR_MinDepth": 2,
 
-    "LMP_MaxDepth": 2,
-    "LMP_BaseMovesToTry": 0,
-    "LMP_MovesDepthMultiplier": 10,
+    "LMP_MaxDepth": 1,
+    "LMP_BaseMovesToTry": 1,
+    "LMP_MovesDepthMultiplier": 11,
 
     "History_MaxMoveValue": 8192,
     "History_MaxMoveRawBonus": 1896,

diff --git a/src/Lynx/Configuration.cs b/src/Lynx/Configuration.cs
@@ -122,38 +122,38 @@ public sealed class EngineSettings
     /// <summary>
     /// Value originally from Stormphrax, who apparently took it from Viridithas
     /// </summary>
-    public double LMR_Base { get; set; } = 0.77;
+    public double LMR_Base { get; set; } = 0.74;
 
     /// <summary>
     /// Value originally from Akimbo
     /// </summary>
-    public double LMR_Divisor { get; set; } = 2.67;
+    public double LMR_Divisor { get; set; } = 2.94;
 
     public int NMP_MinDepth { get; set; } = 3;
 
     public int NMP_BaseDepthReduction { get; set; } = 1;
 
-    public int AspirationWindow_Delta { get; set; } = 50;
+    public int AspirationWindow_Delta { get; set; } = 16;
 
-    public int AspirationWindow_MinDepth { get; set; } = 6;
+    public int AspirationWindow_MinDepth { get; set; } = 7;
 
-    public int RFP_MaxDepth { get; set; } = 6;
+    public int RFP_MaxDepth { get; set; } = 4;
 
-    public int RFP_DepthScalingFactor { get; set; } = 75;
+    public int RFP_DepthScalingFactor { get; set; } = 85;
 
-    public int Razoring_MaxDepth { get; set; } = 2;
+    public int Razoring_MaxDepth { get; set; } = 3;
 
-    public int Razoring_Depth1Bonus { get; set; } = 125;
+    public int Razoring_Depth1Bonus { get; set; } = 106;
 
-    public int Razoring_NotDepth1Bonus { get; set; } = 175;
+    public int Razoring_NotDepth1Bonus { get; set; } = 156;
 
-    public int IIR_MinDepth { get; set; } = 4;
+    public int IIR_MinDepth { get; set; } = 2;
 
-    public int LMP_MaxDepth { get; set; } = 2;
+    public int LMP_MaxDepth { get; set; } = 1;
 
-    public int LMP_BaseMovesToTry { get; set; } = 0;
+    public int LMP_BaseMovesToTry { get; set; } = 1;
 
-    public int LMP_MovesDepthMultiplier { get; set; } = 10;
+    public int LMP_MovesDepthMultiplier { get; set; } = 11;
 
     public int History_MaxMoveValue { get; set; } = 8_192;