Remove moveMalus

Passed STC:
https://tests.stockfishchess.org/tests/view/656e0bb86980e15f69c763fa
LLR: 3.15 (-2.94,2.94) <-1.75,0.25>
Total: 123008 W: 30973 L: 30831 D: 61204
Ptnml(0-2): 368, 14032, 32568, 14162, 374

closes https://github.com/official-stockfish/Stockfish/pull/4905

No functional change

diff --git a/src/search.cpp b/src/search.cpp
index b3ca8c9afe531582cd41811f8aeaf190bbb33c74..39711f3c61162ced3c85122aa940bc6f7a866ff2 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1699,18 +1699,15 @@ void update_all_stats(const Position& pos,
         thisThread->pawnHistory[pawn_structure(pos)][moved_piece][to_sq(bestMove)]
           << quietMoveBonus;
 
-        int moveMalus = bestValue > beta + 168 ? quietMoveMalus      // larger malus
-                                               : stat_malus(depth);  // smaller malus
-
         // Decrease stats for all non-best quiet moves
         for (int i = 0; i < quietCount; ++i)
         {
             thisThread->pawnHistory[pawn_structure(pos)][pos.moved_piece(quietsSearched[i])]
                                    [to_sq(quietsSearched[i])]
-              << -moveMalus;
-            thisThread->mainHistory[us][from_to(quietsSearched[i])] << -moveMalus;
+              << -quietMoveMalus;
+            thisThread->mainHistory[us][from_to(quietsSearched[i])] << -quietMoveMalus;
             update_continuation_histories(ss, pos.moved_piece(quietsSearched[i]),
-                                          to_sq(quietsSearched[i]), -moveMalus);
+                                          to_sq(quietsSearched[i]), -quietMoveMalus);
         }
     }
     else