diff --git a/tests/conway.qbl b/tests/conway.qbl
new file mode 100644
index 0000000..8d6ea98
--- /dev/null
+++ b/tests/conway.qbl
@@ -0,0 +1,354 @@
+//valid, #
+//  #
+//###
+//
+//
+//
+//
+//
+//--------
+//
+//# #
+// ##
+// #
+//
+//
+//
+//
+//--------
+//
+//  #
+//# #
+// ##
+//
+//
+//
+//
+//--------
+//
+// #
+//  ##
+// ##
+//
+//
+//
+//
+//--------
+//
+//  #
+//   #
+// ###
+//
+//
+//
+//
+//--------
+//:END:
+arr field { int 64 }
+
+arr field2 { int 64 }
+
+1 0 coordToIndex 1 field.write
+2 1 coordToIndex 1 field.write
+0 2 coordToIndex 1 field.write
+1 2 coordToIndex 1 field.write
+2 2 coordToIndex 1 field.write
+
+printArray
+
+true 3
+while
+{
+	// i
+	iteration
+	0 dup 1 > -
+}
+deq
+
+function => iteration
+{
+	true 0
+	while
+	{
+		// y
+		true 0 req
+		// true x y
+		while
+		{
+			// x y
+			dup swp req
+			// y x x
+			dup swp
+			// x y x y
+			neighbourhood
+			// x y c
+			dup swp req
+			// x y x c
+			req dup swp req
+			// x y x y c
+			coordToIndex req req req
+			// i x y c
+			dup field.read
+			// x y c i v
+			req req req swp
+			// x y c v i
+			req req
+			// c v i x y
+			update
+			// x y
+			check
+			req
+			// lt x+1 y
+		}
+		// x y
+		deq check
+		// lt y+1
+	}
+	deq
+	copyArrays
+	printArray
+}
+
+function => copyArrays
+{
+	true 0
+	while
+	{
+		// 0
+		dup field2.read
+		dup field.write
+		checkArr
+	}
+	deq
+}
+
+function => printArray
+{
+	true 0
+	while
+	{
+		// y
+		true 0 req
+		// true x y
+		while
+		{
+			// x y
+			dup req dup swp
+			// x y x y
+			coordToIndex
+			// x y i
+			req req field.read
+			// x y v
+			req req printSym
+			// x y
+			check req
+			// lt x+1 y
+		}
+		// x y
+		"" deq req println check
+		// lt y+1
+	}
+	deq
+	"--------" println
+}
+
+function int => printSym
+{
+	// x
+	1 ==
+	// eq
+	if
+	{
+		"#"
+	}
+	else
+	{
+		" "
+	}
+	print
+}
+
+function int => bool int checkArr
+{
+	// i
+	1 + field.length dup
+	// i+1 l i+1
+	< req
+	// lt i+1
+}
+
+function int => bool int check
+{
+	//???
+	// i
+	1 + 8 dup < req
+	//???
+	// i+1 8 i+1
+}
+
+function int int int => update
+{
+	// count value index
+	3 dup req req req
+	// 3 c c v i
+	== req req req
+	// eq c v i
+	if
+	{
+		1 deq deq field2.write
+	}
+	else
+	{
+		// c v i
+		2 req req req
+		// 2 c v i
+		== 1 req req req
+		// 1 v i eq
+		== req && req
+		// teq i
+		if
+		{
+			1
+		}
+		else
+		{
+			0
+		}
+		field2.write
+	}
+}
+
+function int int => int neighbourhood
+{
+	// x y
+	dup 1 req req -
+	// x y x-1
+	0 req req dup >=
+	// x y x-1 ge
+	req req req
+	// ge x y x-1
+	if
+	{
+		req dup swp
+		// x y x-1 y
+		req req
+		// x-1 y x y
+		row
+		// x y abc
+	}
+	else
+	{
+		// x y x-1
+		req req
+		// x-1 x y
+		deq 0
+		// x y 0
+	}
+	dup swp req req
+	// y x abc x
+	dup swp req row
+	// x y abc def
+	req req +
+	// x y abcdef
+
+	dup swp req req
+	// y x abcdef x
+	dup swp req
+	// x y x y abcdef
+	coordToIndex
+	// x y abcdef i
+	req req req
+	// i x y abcdef
+	field.read
+	// x y abcdef v
+	req req -
+	// x y abcdef-v
+
+	1 req req req
+	// 1 x y abcdef
+	+ req req
+	// x+1 y abcdef
+	dup 8 req req req
+	// x+1 l x+1 y abcdef
+	< req req req
+	// lt x+1 y abcdef
+	if
+	{
+		row
+		// abcdef ghi
+	}
+	else
+	{
+		deq deq 0
+		// abcdef 0
+	}
+	+
+	// abcdefghi
+}
+
+function int int => int row
+{
+	// x y
+	1 req dup -
+	// x y y-1
+	dup req req
+	// y-1 x x y
+	0 dup swp req req
+	// 0 y-1 x y-1 x y
+	> req req req req
+	// gt x y-1 x y
+	if
+	{
+		deq deq 0
+		// x y 0
+	}
+	else
+	{
+		// x y-1 x y
+		coordToIndex req req
+		// i x y
+		field.read
+		// x y a
+	}
+	// x y a
+	dup swp req req
+	// y x a x
+	dup swp req
+	// x y x y a
+	coordToIndex
+	// x y a i
+	req req req field.read
+	// x y a b
+	req req +
+	// x y a+b
+	req 1 req
+	// a+b x 1 y
+	req req + req
+	// x y+1 a+b
+	req req 8
+	// a+b x y+1 l
+	req req dup
+	// y+1 l a+b x y+1
+	< req req req
+	// lt a+b x y+1
+	if
+	{
+		// a+b x y+1
+		req coordToIndex
+		// a+b i
+		req field.read
+		// a+b c
+	}
+	else
+	{
+		req deq deq 0
+		// a+b 0
+	}
+	+
+	// a+b+c
+}
+
+function int int => int coordToIndex
+{
+	8 req * +
+}
\ No newline at end of file