X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fsearch.cpp;h=21cfbccac18b7120622537f54ad09fe0dcae90bd;hp=0fe242dd120f9afe15a827c1d8a0b0805640d1e7;hb=734fb9a13b75a2c52c04352bc508b6a71e3f9300;hpb=a66f31f1291a3778bf210ab3ef2b7720966655fb

diff --git a/src/search.cpp b/src/search.cpp
index 0fe242dd..21cfbcca 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -139,7 +139,7 @@ namespace {
 
   // Use internal iterative deepening?
   const bool UseIIDAtPVNodes = true;
-  const bool UseIIDAtNonPVNodes = false;
+  const bool UseIIDAtNonPVNodes = true;
 
   // Internal iterative deepening margin. At Non-PV moves, when
   // UseIIDAtNonPVNodes is true, we do an internal iterative deepening
@@ -201,7 +201,7 @@ namespace {
   Depth ThreatDepth; // heavy SMP read access
 
   // Last seconds noise filtering (LSN)
-  const bool UseLSNFiltering = true;
+  const bool UseLSNFiltering = false;
   const int LSNTime = 4000; // In milliseconds
   const Value LSNValue = value_from_centipawns(200);
   bool loseOnTime = false;
@@ -373,7 +373,7 @@ bool think(const Position& pos, bool infinite, bool ponder, int side_to_move,
   {
       Move bookMove;
       if (get_option_value_string("Book File") != OpeningBook.file_name())
-          OpeningBook.open("book.bin");
+          OpeningBook.open(get_option_value_string("Book File"));
 
       bookMove = OpeningBook.get_move(pos);
       if (bookMove != MOVE_NONE)
@@ -1435,7 +1435,7 @@ namespace {
 
     // Go with internal iterative deepening if we don't have a TT move
     if (UseIIDAtNonPVNodes && ttMove == MOVE_NONE && depth >= 8*OnePly &&
-        evaluate(pos, ei, threadID) >= beta - IIDMargin)
+        !isCheck && evaluate(pos, ei, threadID) >= beta - IIDMargin)
     {
         search(pos, ss, beta, Min(depth/2, depth-2*OnePly), ply, false, threadID);
         ttMove = ss[ply].pv[ply];
@@ -2471,7 +2471,6 @@ namespace {
     assert(!pos.move_is_check(m));
     assert(!pos.move_is_capture_or_promotion(m));
     assert(!pos.move_is_passed_pawn_push(m));
-    assert(d >= OnePly);
 
     Square mfrom, mto, tfrom, tto;