diff --git a/main.c b/main.c
index d067f04..542cb77 100644
--- a/main.c
+++ b/main.c
@@ -201,6 +201,26 @@ int main(int argc, char** argv) {
 	memset(board, 0xE, 72);
 	board[31] = 0x2F;
 
+	/* bug test a
+		for(int x = 1; x < 9; x++) board[x] = 0x2F;
+		for(int x = 1; x < 8; x++) board[x*9] = 0x2F;
+	*/
+
+	/* bug test b - edge test r
+		for(int x = 0; x < 8; x++) board[x*9] = 0x2F;
+	*/
+
+	/* bug test c - edge test l
+		for(int x = 1; x < 9; x++) board[x*9-1] = 0x2F;
+	*/
+
+	/* bug test d - edge test tb
+		for(int x = 1; x < 9; x++) {
+			board[x] = 0x2F;
+			board[9*7-1+x] = 0x2F;
+		}
+	*/
+
 	// rng for runes
 	srand(time(NULL));
 
diff --git a/mcbs b/mcbs
new file mode 100644
index 0000000..925e7e8
--- /dev/null
+++ b/mcbs
@@ -0,0 +1,20 @@
+SOURCES=main.c
+FLAGS="-lxmp -lpulse-simple -O3"
+OUTPUT=alchemy-banal
+
+fembgen() {
+	SOURCES=fembgen.c
+	OUTPUT=fembgen
+	FLAGS=
+}
+
+getmusic() {
+	[ ! -f NOFACE.S3M ] && wget "https://api.modarchive.org/downloads.php?moduleid=48952" -O NOFACE.S3M
+	[ ! -f ./fembgen ] && mcb ./fembgen
+	./fembgen NOFACE.S3M module modsize > music.h
+	exit
+}
+
+all() {
+	[ ! -f music.h ] && mcb getmusic
+}