X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fevaluate.cpp;h=64760d4da5d206f7efc4ac6535fb0b0266cf261a;hp=e05383ffcbdabe3ee600ddbb6ae24a905b5da202;hb=c0136fb7286416be2ec179b4787f53d77023eeaf;hpb=471e745a91074c9cb5502bc0c026cdbd3e91ee9a

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index e05383ff..64760d4d 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -795,7 +795,6 @@ namespace {
     {
         Square s = pop_1st_bit(&b);
 
-        assert(pos.piece_on(s) == piece_of_color_and_type(Us, PAWN));
         assert(pos.pawn_is_passed(Us, s));
 
         int r = int(relative_rank(Us, s) - RANK_2);
@@ -897,6 +896,7 @@ namespace {
             Square s = pop_1st_bit(&b);
             Square queeningSquare = relative_square(c, make_square(square_file(s), RANK_8));
             int d =  square_distance(s, queeningSquare)
+                   - (relative_rank(c, s) == RANK_2) // Double pawn push
                    - square_distance(pos.king_square(opposite_color(c)), queeningSquare)
                    + int(c != pos.side_to_move());