Fix e.p. bug in xiangqi with -serverMoves option

Sideway Pawn moves were written as e.p. captures in the file with moves,
which led to disappearence of pieces in the viewer.

diff --git a/backend.c b/backend.c
index f5f9f99..742bf03 100644 (file)
--- a/backend.c
+++ b/backend.c
@@ -8581,7 +8581,7 @@ MakeMove(fromX, fromY, toX, toY, promoChar)
         if( (boards[forwardMostMove][fromY][fromX] == WhitePawn ||
              boards[forwardMostMove][fromY][fromX] == BlackPawn   ) &&
              boards[forwardMostMove][toY][toX] == EmptySquare
-             && fromX != toX )
+             && fromX != toX && fromY != toY)
                 fprintf(serverMoves, ":%c%c:%c%c", AAA+fromX, ONE+fromY, AAA+toX, ONE+fromY);
         // promotion suffix
         if(promoChar != NULLCHAR)