diff --git a/examples/two_edge_wang_tiles.scad b/examples/two_edge_wang_tiles.scad
new file mode 100644
index 00000000..7686681f
--- /dev/null
+++ b/examples/two_edge_wang_tiles.scad
@@ -0,0 +1,224 @@
+use <arc.scad>;
+
+rows = 10;
+columns = 15;
+tile_width = 10;
+tile_thickness = 2;
+$fn = 24;
+
+module two_edge_wang_tiles(rows, columns, tile_width) {
+	edges = [
+		for(y = [0:rows])
+		[
+			for(x = [0:columns]) 
+			[round(rands(0, 1, 1)[0]), round(rands(0, 1, 1)[0])]
+		]
+	];
+
+	for(y = [0:rows - 1]) {
+		for(x = [0:columns - 1]) {
+			i = (edges[y + 1][x][0] == 1 ? 1 : 0) +
+			(edges[y][x + 1][1] == 1 ? 2 : 0) +
+			(edges[y][x][0] == 1 ? 4 : 0) +
+			(edges[y][x][1] == 1 ? 8 : 0);
+			translate([x, y] * tile_width)
+				children(i);
+		}
+	}
+}
+
+two_edge_wang_tiles(rows, columns, tile_width) {
+    sample_tile(0, tile_width, tile_thickness);
+	sample_tile(1, tile_width, tile_thickness);
+	sample_tile(2, tile_width, tile_thickness);
+	sample_tile(3, tile_width, tile_thickness);
+	sample_tile(4, tile_width, tile_thickness);
+	sample_tile(5, tile_width, tile_thickness);
+	sample_tile(6, tile_width, tile_thickness);
+	sample_tile(7, tile_width, tile_thickness);
+	sample_tile(8, tile_width, tile_thickness);
+	sample_tile(9, tile_width, tile_thickness);
+	sample_tile(10, tile_width, tile_thickness);
+	sample_tile(11, tile_width, tile_thickness);
+	sample_tile(12, tile_width, tile_thickness);
+	sample_tile(13, tile_width, tile_thickness);
+	sample_tile(14, tile_width, tile_thickness);
+	sample_tile(15, tile_width, tile_thickness);
+}
+
+translate([0, tile_width * (rows + 1)]) {
+    color("LightGrey")
+    linear_extrude(tile_thickness / 2)
+    translate([-tile_width / 2, -tile_width / 2])
+        square([columns * tile_width, rows * tile_width]);
+	
+	color("green")
+	linear_extrude(tile_thickness)
+		two_edge_wang_tiles(rows, columns, tile_width) {
+			path_tile(0, tile_width);
+			path_tile(1, tile_width);
+			path_tile(2, tile_width);
+			path_tile(3, tile_width);
+			path_tile(4, tile_width);
+			path_tile(5, tile_width);
+			path_tile(6, tile_width);
+			path_tile(7, tile_width);
+			path_tile(8, tile_width);
+			path_tile(9, tile_width);
+			path_tile(10, tile_width);
+			path_tile(11, tile_width);
+			path_tile(12, tile_width);
+			path_tile(13, tile_width);
+			path_tile(14, tile_width);
+			path_tile(15, tile_width);
+		}
+}
+
+module sample_tile(n, width, thickness) {
+    half_w = width / 2;
+	
+	diff_polygons = [
+	    [[]],
+		[[[0, 0], [half_w, half_w], [-half_w, half_w]]],
+		[[[0, 0], [half_w, -half_w], [half_w, half_w]]],
+		[[[-half_w, half_w], [half_w, -half_w], [half_w, half_w]]],
+		[[[0, 0], [-half_w, -half_w], [half_w, -half_w]]],
+		[
+		    [[0, 0], [half_w, half_w], [-half_w, half_w]],
+		    [[0, 0], [-half_w, -half_w], [half_w, -half_w]]
+		],
+		[[[-half_w, -half_w], [half_w, -half_w], [half_w, half_w]]],
+		[[[0, 0], [-half_w, -half_w], [half_w, -half_w], [half_w, half_w], [-half_w, half_w]]],
+		[[[0, 0], [-half_w, half_w], [-half_w, -half_w]]],
+		[[[-half_w, half_w], [-half_w, -half_w], [half_w, half_w]]],
+		[
+		    [[0, 0], [-half_w, half_w], [-half_w, -half_w]],
+		    [[0, 0], [half_w, -half_w], [half_w, half_w]]
+		],
+		[[[0, 0], [half_w, -half_w], [half_w, half_w], [-half_w, half_w], [-half_w, -half_w]]],
+		[[[-half_w, half_w], [-half_w, -half_w], [half_w, -half_w]]],
+		[[[0, 0], [half_w, half_w], [-half_w, half_w], [-half_w, -half_w], [half_w, -half_w]]],
+		[[[0, 0], [-half_w, half_w], [-half_w, -half_w], [half_w, -half_w], [half_w, half_w]]],
+		[[[half_w, half_w], [-half_w, half_w], [-half_w, -half_w], [half_w, -half_w]]]
+	];
+
+    color("blue")
+    linear_extrude(thickness) 
+	difference() {
+        square(width, center = true);
+		for(diff_polygon = diff_polygons[n]) {
+		    offset(0.01) polygon(diff_polygon);
+		}
+	}
+	
+	color("yellow")
+	linear_extrude(thickness / 2)
+	    square(width, center = true);
+}
+
+module path_tile(n, width) {
+    half_w = width / 2;
+	quarter_w = width / 4;
+	
+	module tile1() {
+		difference() {
+			square(width, center = true);
+			circle(quarter_w);
+			translate([0, quarter_w])
+				square([quarter_w, quarter_w * 2], center = true);
+		}
+	}
+	
+	module tile3() {
+        difference() {
+			square(width, center = true);
+			translate([half_w, half_w])
+			arc(radius = half_w, angle = [180, 270], width = quarter_w);
+		}
+	}
+
+	module tile5() {
+        difference() {
+			square(width, center = true);
+			square([quarter_w, width], center = true);
+		}
+	}
+	
+	module tile7() {
+        intersection() {
+			square(width, center = true);
+			translate([half_w, half_w])
+			    circle(1.5 * quarter_w);
+		}
+        intersection() {
+			square(width, center = true);
+			translate([half_w, -half_w])
+			    circle(1.5 * quarter_w);
+		}
+        intersection() {
+			square(width, center = true);
+			translate([-1.25 * half_w, 0])
+                square(width, center = true);
+		}
+	}
+	
+	module tile15() {
+	    for(i = [0:3]) {
+			rotate(90 * i)
+			intersection() {
+				square(width, center = true);
+				translate([half_w, half_w])
+					circle(1.5 * quarter_w);
+			}
+		}
+	}
+	
+	if(n == 0) {
+	    square(width, center = true);
+	}
+	else if(n == 1) {
+		tile1();
+	}
+	else if(n == 2) {
+	    rotate(-90) tile1();
+	}
+	else if(n == 3) {
+	    tile3();
+	}
+	else if(n == 4) {
+	    rotate(-180) tile1();
+	}
+	else if(n == 5) {
+	    tile5();
+	}
+	else if(n == 6) {
+	    rotate(-90) tile3();
+	}
+	else if(n == 7) {
+	    tile7();
+	}
+	else if(n == 8) {
+	    rotate(90) tile1();
+	}
+	else if(n == 9) {
+	    rotate(90) tile3();
+	}
+	else if(n == 10) {
+	    rotate(90) tile5();
+	}
+	else if(n == 11) {
+	    rotate(90) tile7();
+	}
+	else if(n == 12) {
+	    rotate(-180) tile3();
+	}
+	else if(n == 13) {
+	    rotate(180) tile7();
+	}
+	else if(n == 14) {
+	    rotate(270) tile7();
+	}
+	else if(n == 15) {
+	    rotate(270) tile15();
+	}
+}
\ No newline at end of file