diff -r daaf6e5b3501 -r 41468077b5bb src/game.h
--- a/src/game.h	Wed Mar 19 10:08:25 2014 +0100
+++ b/src/game.h	Wed Mar 19 15:36:54 2014 +0100
@@ -31,11 +31,40 @@
 #define	GAME_H
 
 #include "terminal-chess.h"
+#include <stdint.h>
 
 #ifdef	__cplusplus
 extern "C" {
 #endif
 
+#define PIECE_MASK 0x0F
+#define COLOR_MASK 0xF0
+
+#define WHITE 0x10
+#define BLACK 0x20
+
+#define PAWN   0x01
+#define ROOK   0x02
+#define KNIGHT 0x03
+#define BISHOP 0x04
+#define QUEEN  0x05
+#define KING   0x06
+
+#define WPAWN   (WHITE|PAWN)
+#define WROOK   (WHITE|ROOK)
+#define WKNIGHT (WHITE|KNIGHT)
+#define WBISHOP (WHITE|BISHOP)
+#define WQUEEN  (WHITE|QUEEN)
+#define WKING   (WHITE|KING)
+#define BPAWN   (BLACK|PAWN)
+#define BROOK   (BLACK|ROOK)
+#define BKNIGHT (BLACK|KNIGHT)
+#define BBISHOP (BLACK|BISHOP)
+#define BQUEEN  (BLACK|QUEEN)
+#define BKING   (BLACK|KING)
+
+typedef uint8_t Board[8][8];
+
 void game_start(Settings *settings, int opponent);
 
 #ifdef	__cplusplus