Improve identification of e.p. victim

[xboard.git] / common.h

diff --git a/common.h b/common.h
index 9a4c2c4..2aff360 100644 (file)
--- a/common.h
+++ b/common.h
@@ -181,6 +181,8 @@ typedef char *String;
 #define BOARD_RGHT   (gameInfo.boardWidth + gameInfo.holdingsWidth)
 #define CASTLING     (BOARD_RANKS-1)           /* [HGM] hide in upper rank   */
 #define VIRGIN       (BOARD_RANKS-2)           /* [HGM] pieces not moved     */
+#define LAST_RANK    CASTLING][(BOARD_FILES-8) /* [HGM] in upper rank        */
+#define LAST_FILE    CASTLING][(BOARD_FILES-7) /* [HGM] in upper rank        */
 #define TOUCHED_W    CASTLING][(BOARD_FILES-6) /* [HGM] in upper rank        */
 #define TOUCHED_B    CASTLING][(BOARD_FILES-5) /* [HGM] in upper rank        */
 #define EP_RANK      CASTLING][(BOARD_FILES-4) /* [HGM] in upper rank        */