X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fsearch.cpp;h=409ad20afca6c2bea6f64cdea1b4566975bcb395;hb=c12364bb67741daff123c50770b1fd6923fa9530;hp=c0f087ff5a95fdb4174110efe86372de56e25ade;hpb=0b9b34655f2522408f036f79b7f1a01c71a6dedd;p=stockfish

diff --git a/src/search.cpp b/src/search.cpp
index c0f087ff..409ad20a 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -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;