X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fsearch.cpp;h=53811de04701c4705053dc0d3ed1e52049db0aed;hp=a0215bee2741e34adf2c47de4d41a5a9b6305ba1;hb=c1ea5ed6f7204afd6cb03a80ca8d124bd82cc40d;hpb=8dd01fda121eb138287f09493a4d86c58c58d7e1

diff --git a/src/search.cpp b/src/search.cpp
index a0215bee..53811de0 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -471,10 +471,10 @@ bool think(const Position& pos, bool infinite, bool ponder, int side_to_move,
       NodesBetweenPolls = Min(MaxNodes, 30000);
       InfiniteSearch = true; // HACK
   }
-  else if (myTime < 1000)
-      NodesBetweenPolls = 100;
-  else if (myTime < 5000)
+  else if (myTime && myTime < 1000)
       NodesBetweenPolls = 1000;
+  else if (myTime && myTime < 5000)
+      NodesBetweenPolls = 5000;
   else
       NodesBetweenPolls = 30000;
 
@@ -1048,7 +1048,7 @@ namespace {
     EvalInfo ei;
 
     if (ply >= PLY_MAX - 1)
-        return evaluate(pos, ei, threadID);
+        return pos.is_check() ? quick_evaluate(pos) : evaluate(pos, ei, threadID);
 
     // Mate distance pruning
     Value oldAlpha = alpha;
@@ -1238,7 +1238,7 @@ namespace {
     EvalInfo ei;
 
     if (ply >= PLY_MAX - 1)
-        return evaluate(pos, ei, threadID);
+        return pos.is_check() ? quick_evaluate(pos) : evaluate(pos, ei, threadID);
 
     // Mate distance pruning
     if (value_mated_in(ply) >= beta)
@@ -1369,7 +1369,8 @@ namespace {
       {
           // History pruning. See ok_to_prune() definition
           if (   moveCount >= 2 + int(depth)
-              && ok_to_prune(pos, move, ss[ply].threatMove, depth))
+              && ok_to_prune(pos, move, ss[ply].threatMove, depth)
+              && bestValue > value_mated_in(PLY_MAX))
               continue;
 
           // Value based pruning
@@ -1529,8 +1530,8 @@ namespace {
     else
         staticValue = evaluate(pos, ei, threadID);
 
-    if (ply == PLY_MAX - 1)
-        return evaluate(pos, ei, threadID);
+    if (ply >= PLY_MAX - 1)
+        return pos.is_check() ? quick_evaluate(pos) : evaluate(pos, ei, threadID);
 
     // Initialize "stand pat score", and return it immediately if it is
     // at least beta.