Eval tune

Book: winrate 65_85
TC: 180+1.8
Total/Win/Draw/Lose: 12388 / 3050 / 6484 / 2854
PTNML: 8 / 1171 / 3645 / 1357 / 13
WinRate: 50.79%
ELO: 5.25[2.32, 8.18]
LOS: 99.98
LLR: 3.12[-2.94, 2.94]

src/evaluate.cpp

@@ -46,21 +46,21 @@ Value Eval::evaluate(const Eval::NNUE::Network& network,
     assert(!pos.checkers());
 
     auto [psqt, positional] = network.evaluate(pos, &caches.cache);
-    Value nnue              = (1020 * psqt + 1092 * positional) / 1194;
+    Value nnue              = (1563 * psqt + 1633 * positional) / 1183;
     int   nnueComplexity    = std::abs(psqt - positional);
 
     // Blend optimism and eval with nnue complexity
-    optimism += optimism * nnueComplexity / 434;
-    nnue -= nnue * nnueComplexity / 11623;
+    optimism += optimism * nnueComplexity / 550;
+    nnue -= nnue * nnueComplexity / 10129;
 
-    int mm = pos.major_material() / 36;
-    int v  = (nnue * (615 + mm) + optimism * (109 + mm)) / 509;
+    int mm = pos.major_material() / 39;
+    int v  = (nnue * (430 + mm) + optimism * (101 + mm)) / 575;
 
     // Evaluation grain (to get more alpha-beta cuts) with randomization (for robustness)
     v = (v / 16) * 16 - 1 + (pos.key() & 0x2);
 
     // Damp down the evaluation linearly when shuffling
-    v -= (v * pos.rule60_count()) / 262;
+    v -= (v * pos.rule60_count()) / 244;
 
     // Guarantee evaluation does not hit the mate range
     v = std::clamp(v, VALUE_MATED_IN_MAX_PLY + 1, VALUE_MATE_IN_MAX_PLY - 1);

src/types.h

@@ -145,12 +145,12 @@ constexpr Value VALUE_MATE             = 32000;
 constexpr Value VALUE_MATE_IN_MAX_PLY  = VALUE_MATE - MAX_PLY;
 constexpr Value VALUE_MATED_IN_MAX_PLY = -VALUE_MATE_IN_MAX_PLY;
 
-constexpr Value RookValue    = 1213;
-constexpr Value AdvisorValue = 216;
-constexpr Value CannonValue  = 746;
-constexpr Value PawnValue    = 140;
-constexpr Value KnightValue  = 964;
-constexpr Value BishopValue  = 191;
+constexpr Value RookValue    = 1357;
+constexpr Value AdvisorValue = 213;
+constexpr Value CannonValue  = 861;
+constexpr Value PawnValue    = 149;
+constexpr Value KnightValue  = 980;
+constexpr Value BishopValue  = 186;
 
 // clang-format off
 enum PieceType {