+x, y, z = symbols('x y z')
+
+# diam = Ge(y, x - 1) & Le(y, x + 1) & Ge(y, -x - 1) & Le(y, -x + 1)
+# print('diamond:', diam)
+# diam.plot(fill=True, edgecolor='red', facecolor='yellow')
+# pylab.show()
+
+# Chamfered cube
+cham = Le(0, x) & Le(x, 3) & Le(0, y) & Le(y, 3) & Le(0, z) & Le(z, 3) & \
+ Le(z - 2, x) & Le(x, z + 2) & Le(1 - z, x) & Le(x, 5 - z) & \
+ Le(z - 2, y) & Le(y, z + 2) & Le(1 - z, y) & Le(y, 5 - z) & \
+ Le(y - 2, x) & Le(x, y + 2) & Le(1 - y, x) & Le(x, 5 - y)
+cham_plot = cham.plot(facecolors=(1, 0, 0, 0.75))
+pylab.show()
+
+# Rhombicuboctahedron
+rhom = cham & \
+ Le(x + y + z, 7) & Ge(-2, -x - y - z) & \
+ Le(-1, x + y - z) & Le(x + y - z, 4) & \
+ Le(-1, x - y + z) & Le(x - y + z, 4) & \
+ Le(-1, -x + y + z) & Le(-x + y + z, 4)
+rhom.plot(facecolors=(0, 1, 0, 0.75))
+pylab.show()