@@ -10,34 +10,8 @@
 	char single_step();
 	void force(char c);
 }
 
-
-bool is_spacy(char c)
-{
-	return c==' ' || c=='.' || c=='R' || c=='!' || c=='\\' || c=='O';
-}
-
-bool is_rocky(char c)
-{
-	return c=='*' || c=='@';
-}
-
-bool is_true_space(char c)
-{
-	return c==' ';
-}
-
-bool is_trampoline_source(char c)
-{
-	return 'A'<=c && c<='I';
-}
-
-bool is_rocklambda(char c)
-{
-	return is_rocky(c) || c=='\\';
-}
-
 Tuple!(string,int) death_move(in Game g)
 {
 	// TODO: S
 
@@ -189,9 +163,9 @@
 			cand ~= search(g, ro, la~ra, death);
 		}
 
 		// 'higesori' mode
-		if( !hi.empty && g.map.razor>0 ) {
+		if( !hi.empty && g.map.num_razor>0 ) {
 			int his = 0;
 			for(int dy=-1; dy<=+1; ++dy)
 			for(int dx=-1; dx<=+1; ++dx)
 				if(g.map[ro.y+dy,ro.x+dx] == 'W')