diff -r 41468077b5bb -r 52d742aee695 src/game.h
--- a/src/game.h	Wed Mar 19 15:36:54 2014 +0100
+++ b/src/game.h	Sat Mar 22 16:04:02 2014 +0100
@@ -65,6 +65,21 @@
 
 typedef uint8_t Board[8][8];
 
+typedef struct {
+    uint8_t piece;
+    uint8_t fromfile;
+    uint8_t fromrow;
+    uint8_t tofile;
+    uint8_t torow;
+    _Bool check;
+    _Bool capture;
+} Move;
+
+#define isfile(file) (file >= 'a' && file <= 'h')
+#define isrow(row) (row >= '1' && row <= '8')
+#define rowidx(row) (row-'1')
+#define fileidx(file) (file-'a')
+
 void game_start(Settings *settings, int opponent);
 
 #ifdef	__cplusplus