SPSA Tuning 121k LTC iterations

AndyGrant · AndyGrant · commit 68ab36b6622e · 2023-10-15T07:51:37.000-04:00
Elo   | 1.63 +- 3.13 (95%)
SPRT  | 10.0+0.10s Threads=1 Hash=8MB
LLR   | 0.91 (-2.25, 2.89) [0.00, 3.00]
Games | N: 22656 W: 5487 L: 5381 D: 11788
Penta | [110, 2583, 5833, 2695, 107]

Elo   | 3.11 +- 3.06 (95%)
SPRT  | 60.0+0.60s Threads=1 Hash=64MB
LLR   | 2.91 (-2.25, 2.89) [0.00, 3.00]
Games | N: 23356 W: 5615 L: 5406 D: 12335
Penta | [21, 2477, 6469, 2694, 17]

Bench 3017694
diff --git a/src/search.c b/src/search.c
@@ -152,11 +152,11 @@ void initSearch() {
     // Init Late Move Reductions Table
     for (int depth = 1; depth < 64; depth++)
         for (int played = 1; played < 64; played++)
-            LMRTable[depth][played] = 0.8180 + log(depth) * log(played) / 2.4760;
+            LMRTable[depth][played] = 0.7844 + log(depth) * log(played) / 2.4696;
 
     for (int depth = 1; depth <= 10; depth++) {
-        LateMovePruningCounts[0][depth] = 2.1719 + 0.4048 * depth * depth;
-        LateMovePruningCounts[1][depth] = 3.9498 + 0.7760 * depth * depth;
+        LateMovePruningCounts[0][depth] = 2.0767 + 0.3743 * depth * depth;
+        LateMovePruningCounts[1][depth] = 3.8733 + 0.7124 * depth * depth;
     }
 }
 
@@ -698,7 +698,7 @@ int search(Thread *thread, PVariation *pv, int alpha, int beta, int depth, bool
                 R -= ns->mp.stage < STAGE_QUIET;
 
                 // Adjust based on history scores
-                R -= MAX(-2, MIN(2, hist / 5770));
+                R -= MAX(-2, MIN(2, hist / 6167));
             }
 
             // Step 18B (~3 elo). Noisy Late Move Reductions. The same as Step 18A, but
@@ -707,7 +707,7 @@ int search(Thread *thread, PVariation *pv, int alpha, int beta, int depth, bool
             else {
 
                 // Initialize R based on Capture History
-                R = 2 - (hist / 5128);
+                R = 3 - (hist / 4952);
 
                 // Reduce for moves that give check
                 R -= !!board->kingAttackers;
diff --git a/src/search.h b/src/search.h
@@ -44,37 +44,37 @@ static const int WindowTimerMS = 2500;
 
 static const int CurrmoveTimerMS = 2500;
 
-static const int TTResearchMargin = 137;
+static const int TTResearchMargin = 141;
 
 static const int BetaPruningDepth = 8;
-static const int BetaMargin = 62;
+static const int BetaMargin = 57;
 
 static const int AlphaPruningDepth = 4;
-static const int AlphaMargin = 3328;
+static const int AlphaMargin = 3488;
 
 static const int NullMovePruningDepth = 2;
 
 static const int ProbCutDepth = 5;
-static const int ProbCutMargin = 98;
+static const int ProbCutMargin = 100;
 
 static const int FutilityPruningDepth = 8;
-static const int FutilityMarginBase = 76;
-static const int FutilityMarginPerDepth = 51;
-static const int FutilityMarginNoHistory = 162;
-static const int FutilityPruningHistoryLimit[] = { 13954, 5789 };
+static const int FutilityMarginBase = 77;
+static const int FutilityMarginPerDepth = 52;
+static const int FutilityMarginNoHistory = 165;
+static const int FutilityPruningHistoryLimit[] = { 14296, 6004 };
 
 static const int ContinuationPruningDepth[] = { 3, 2 };
 static const int ContinuationPruningHistoryLimit[] = { -1000, -2500 };
 
-static const int LateMovePruningDepth = 7;
+static const int LateMovePruningDepth = 8;
 
-static const int SEEPruningDepth = 9;
+static const int SEEPruningDepth = 10;
 static const int SEEQuietMargin = -64;
-static const int SEENoisyMargin = -19;
+static const int SEENoisyMargin = -20;
 static const int SEEPieceValues[] = {
-     104,  419,  447,  693,
-    1316,    0,    0,    0,
+     103,  422,  437,  694,
+    1313,    0,    0,    0,
 };
 
-static const int QSSeeMargin = 116;
-static const int QSDeltaMargin = 149;
+static const int QSSeeMargin = 123;
+static const int QSDeltaMargin = 142;
