diff -r 7ffd66591afe -r a298c6637c30 src/rules/bishop.c
--- a/src/rules/bishop.c	Fri Mar 28 11:45:01 2014 +0100
+++ b/src/rules/bishop.c	Fri Mar 28 14:32:52 2014 +0100
@@ -28,8 +28,9 @@
  */
 
 #include "bishop.h"
+#include "rules.h"
 
-_Bool bishop_chkrules(Board board, Move* move) {
+_Bool bishop_chkrules(Move* move) {
     // TODO: implement
     return FALSE;
 }
@@ -39,7 +40,7 @@
     return TRUE;
 }
 
-_Bool bishop_getlocation(Board board, Move *move) {
+int bishop_getlocation(Board board, Move *move) {
     // TODO: implement
-    return FALSE;
+    return INVALID_MOVE_SYNTAX;
 }