  zigoubie | Thanks for this puzzle Posted on 2/3/13 5:33 AM  |
 ajenomia | Un clásico dibujo que estudié en lógica matemática. Maravilloso. Posted on 10/9/12 7:34 PM |
truesue | I don't see it. Wait..... Oh yeah!!! good one Posted on 12/5/11 10:49 PM |
kayton | Excellent! Posted on 11/8/11 3:28 AM |