X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fsearch.cpp;h=426f84d92493906ecab9c572084a9d81bbd4ba68;hb=e3b03f13b3798389c7ad5e09564a7e662ac34237;hp=d89779f85bf9eb4fb3c8e8c9e3f3c96056a2dd2c;hpb=2d0146fe1d4551642f98c3273d26192b43e80d79;p=stockfish

diff --git a/src/search.cpp b/src/search.cpp
index d89779f8..426f84d9 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -133,9 +133,6 @@ namespace {
   // when the static evaluation is at most IIDMargin below beta.
   const Value IIDMargin = Value(0x100);
 
-  // Use easy moves?
-  const bool UseEasyMove = true;
-
   // Easy move margin.  An easy move candidate must be at least this much
   // better than the second best move.
   const Value EasyMoveMargin = Value(0x200);
@@ -1076,7 +1073,9 @@ namespace {
           // If we are at ply 1, and we are searching the first root move at
           // ply 0, set the 'Problem' variable if the score has dropped a lot
           // (from the computer's point of view) since the previous iteration:
-          if (Iteration >= 2 && -value <= ValueByIteration[Iteration-1] - ProblemMargin)
+          if (   ply == 1
+              && Iteration >= 2
+              && -value <= ValueByIteration[Iteration-1] - ProblemMargin)
               Problem = true;
       }
 
@@ -1778,8 +1777,10 @@ namespace {
         }
         // If we are at ply 1, and we are searching the first root move at
         // ply 0, set the 'Problem' variable if the score has dropped a lot
-        // (from the computer's point of view) since the previous iteration:
-        if (Iteration >= 2 && -value <= ValueByIteration[Iteration-1] - ProblemMargin)
+        // (from the computer's point of view) since the previous iteration.
+        if (   sp->ply == 1
+            && Iteration >= 2
+            && -value <= ValueByIteration[Iteration-1] - ProblemMargin)
             Problem = true;
       }
       lock_release(&(sp->lock));
@@ -1788,7 +1789,7 @@ namespace {
     lock_grab(&(sp->lock));
 
     // If this is the master thread and we have been asked to stop because of
-    // a beta cutoff higher up in the tree, stop all slave threads:
+    // a beta cutoff higher up in the tree, stop all slave threads.
     if (sp->master == threadID && thread_should_stop(threadID))
         for (int i = 0; i < ActiveThreads; i++)
             if (sp->slaves[i])
@@ -2284,7 +2285,8 @@ namespace {
     if (  !PruneBlockingMoves
         && threat != MOVE_NONE
         && piece_is_slider(pos.piece_on(tfrom))
-        && bit_is_set(squares_between(tfrom, tto), mto) && pos.see(m) >= 0)
+        && bit_is_set(squares_between(tfrom, tto), mto)
+        && pos.see(m) >= 0)
             return false;
 
     return true;