From: H.G. Muller <h.g.muller@hccnet.nl>
Date: Fri, 28 Feb 2014 09:43:08 +0000 (+0100)
Subject: Fix Pawn double-push
X-Git-Tag: 0.18~2
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=249a20cb9dd6f29fa5450deafbb44dfabf723f90;p=hachu.git

Fix Pawn double-push

Black pawns also did double-pushes from the 6th rank!
---

diff --git a/hachu.c b/hachu.c
index f457569..d341352 100644
--- a/hachu.c
+++ b/hachu.c
@@ -1122,7 +1122,7 @@ GenNonCapts (int promoSuppress)
 	  }
 	} else
 	if(r == M) { // FIDE Pawn; check double-move
-	  if(!NewNonCapture(x, x+v, pFlag) && chessFlag && promoBoard[x-v])
+	  if(!NewNonCapture(x, x+v, pFlag) && chessFlag && promoBoard[x-v] & LAST_RANK)
 	    NewNonCapture(x, x+2*v, pFlag), moveStack[msp-1] |= DEFER; // use promoSuppress flag as e.p. flag
 	}
 	continue;