Merge remote-tracking branch 'upstream/master'

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index 7fffae263008e0175cc553844b0adc7137536fd0..645b1f9cb0b80b6395717733e6b9b978a2565af0 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -607,15 +607,6 @@ namespace {
             : ttHit    ? tte->move() : MOVE_NONE;
     ttPv = (ttHit && tte->is_pv()) || (PvNode && depth > 4 * ONE_PLY);
 
-    // if position has been searched at higher depths and we are shuffling, return value_draw
-    if (pos.rule50_count() > 36
-        && ss->ply > 36
-        && depth < 3 * ONE_PLY
-        && ttHit
-        && tte->depth() > depth
-        && pos.count<PAWN>() > 0)
-        return VALUE_DRAW;
-
     // At non-PV nodes we check for an early TT cutoff
     if (  !PvNode
         && ttHit
@@ -934,10 +925,6 @@ moves_loop: // When in check, search starts from here
                && (pos.blockers_for_king(~us) & from_sq(move) || pos.see_ge(move)))
           extension = ONE_PLY;
 
-      // Shuffle extension
-      else if(pos.rule50_count() > 14 && ss->ply > 14 && depth < 3 * ONE_PLY && PvNode)
-          extension = ONE_PLY;
-
       // Castling extension
       else if (type_of(move) == CASTLING)
           extension = ONE_PLY;