X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fsearch.cpp;h=cf7e411d8504e2c2cba05869d91aaccdafcd137a;hp=ce8c4b7a0d782625d76113d863bf7e26e5c774c7;hb=6aa9308f08bc76b0e3615dde65de7782a6761fa3;hpb=805afcbf3d5db39c85b759232cfb99ab0a250311

diff --git a/src/search.cpp b/src/search.cpp
index ce8c4b7a..cf7e411d 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -788,9 +788,8 @@ namespace {
     }
 
     // Step 9. ProbCut (skipped when in check)
-    // If we have a very good capture (i.e. SEE > seeValues[captured_piece_type])
-    // and a reduced search returns a value much above beta, we can (almost)
-    // safely prune the previous move.
+    // If we have a good enough capture and a reduced search returns a value
+    // much above beta, we can (almost) safely prune the previous move.
     if (   !PvNode
         &&  depth >= 5 * ONE_PLY
         &&  abs(beta) < VALUE_MATE_IN_MAX_PLY)
@@ -802,7 +801,7 @@ namespace {
         assert((ss-1)->currentMove != MOVE_NONE);
         assert((ss-1)->currentMove != MOVE_NULL);
 
-        MovePicker mp(pos, ttMove, PieceValue[MG][pos.captured_piece_type()]);
+        MovePicker mp(pos, ttMove, rbeta - ss->staticEval);
 
         while ((move = mp.next_move()) != MOVE_NONE)
             if (pos.legal(move))
@@ -883,7 +882,7 @@ moves_loop: // When in check search starts from here
       moved_piece = pos.moved_piece(move);
 
       givesCheck =  type_of(move) == NORMAL && !pos.discovered_check_candidates()
-                  ? pos.check_info().checkSquares[type_of(pos.piece_on(from_sq(move)))] & to_sq(move)
+                  ? pos.check_squares(type_of(pos.piece_on(from_sq(move)))) & to_sq(move)
                   : pos.gives_check(move);
 
       moveCountPruning =   depth < 16 * ONE_PLY
@@ -1285,7 +1284,7 @@ moves_loop: // When in check search starts from here
       assert(is_ok(move));
 
       givesCheck =  type_of(move) == NORMAL && !pos.discovered_check_candidates()
-                  ? pos.check_info().checkSquares[type_of(pos.piece_on(from_sq(move)))] & to_sq(move)
+                  ? pos.check_squares(type_of(pos.piece_on(from_sq(move)))) & to_sq(move)
                   : pos.gives_check(move);
 
       // Futility pruning