Combo

Combo of two parameter tweaks and tuned values for Queen and ThreatByKing. STC LLR: 2.95 (-2.94,2.94) [0.00,4.00] Total: 20180 W: 4439 L: 4198 D: 11543 http://tests.stockfishchess.org/tests/view/5bd7b8250ebc595e0ae22e97 LTC LLR: 2.95 (-2.94,2.94) [0.00,4.00] Total: 86312 W: 14106 L: 13685 D: 58521 http://tests.stockfishchess.org/tests/view/5bd803560ebc595e0ae23213 This combo consists of the following: Queen Value (tuned values) Iter: 72056, A: 5000, alpha 0.602000, gamma 0.101000, clipping old, rounding deterministic param: QueenValueMg, best: 2528.91, start: 2528.00 param: QueenValueEg, best: 2687.12, start: 2698.00 ThreatByKing (tuned values) Green STC (50.8k games) http://tests.stockfishchess.org/tests/view/5bd1d5a00ebc595e0ae1cbec LTC (I stopped this test at 71.2k games. It's likely yellow.) http://tests.stockfishchess.org/tests/view/5bd263e70ebc595e0ae1d77e WeakUnopposedPawn (tweak) by xoto (https://github.com/xoto10) Green STC (102.8k games) http://tests.stockfishchess.org/tests/view/5bd306bb0ebc595e0ae1e146 Yellow LTC (90.8k games) http://tests.stockfishchess.org/tests/view/5bd3ea660ebc595e0ae1f16b aspiTune1 (tweak) by vondele (https://github.com/vondele) Green STC (125.9k games) http://tests.stockfishchess.org/tests/view/5bd2ae100ebc595e0ae1dab0 Yellow LTC (107.9k games) http://tests.stockfishchess.org/tests/view/5bd3eb700ebc595e0ae1f16f Thank you @31m059 (Mark Tenzer) for helping me! Also, thank you very much for recognizing my efforts. I genuinely appreciate it. Bench: 3556672
official-stockfish · Nov 1, 2018 · 4a0db9e · 4a0db9e
1 parent 7a61368
commit 4a0db9e
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Showing 3 changed files with 4 additions and 4 deletions.
diff --git a/src/evaluate.cpp b/src/evaluate.cpp
@@ -167,13 +167,13 @@ namespace {
   constexpr Score PawnlessFlank      = S( 19, 84);
   constexpr Score RookOnPawn         = S( 10, 30);
   constexpr Score SliderOnQueen      = S( 42, 21);
-  constexpr Score ThreatByKing       = S( 23, 76);
+  constexpr Score ThreatByKing       = S( 22, 78);
   constexpr Score ThreatByPawnPush   = S( 45, 40);
   constexpr Score ThreatByRank       = S( 16,  3);
   constexpr Score ThreatBySafePawn   = S(173,102);
   constexpr Score TrappedRook        = S( 92,  0);
   constexpr Score WeakQueen          = S( 50, 10);
-  constexpr Score WeakUnopposedPawn  = S(  5, 29);
+  constexpr Score WeakUnopposedPawn  = S( 15, 19);
 
 #undef S
 

diff --git a/src/search.cpp b/src/search.cpp
@@ -388,7 +388,7 @@ void Thread::search() {
           if (rootDepth >= 5 * ONE_PLY)
           {
               Value previousScore = rootMoves[pvIdx].previousScore;
-              delta = Value(18);
+              delta = Value(20);
               alpha = std::max(previousScore - delta,-VALUE_INFINITE);
               beta  = std::min(previousScore + delta, VALUE_INFINITE);
 

diff --git a/src/types.h b/src/types.h
@@ -180,7 +180,7 @@ enum Value : int {
   KnightValueMg = 784,   KnightValueEg = 868,
   BishopValueMg = 828,   BishopValueEg = 916,
   RookValueMg   = 1286,  RookValueEg   = 1378,
-  QueenValueMg  = 2528,  QueenValueEg  = 2698,
+  QueenValueMg  = 2529,  QueenValueEg  = 2687,
 
   MidgameLimit  = 15258, EndgameLimit  = 3915
 };