  marrog | ok !! Posted on 10/7/21 10:02 PM  |
 roodar | ok !!! Posted on 9/19/21 1:09 PM |
  jolanna | Bardzo ładnie ! Posted on 8/9/13 8:08 PM |
  kasperow | Wait a minute... The water is running upwards? Posted on 8/20/12 9:52 PM |
 terrio | No termino de verlo. Valoro el esfuerzo por hacerlo. Posted on 10/9/10 12:25 PM |
sadilox | Neat puzzle. Posted on 4/28/09 6:59 AM |
sssinger | Loved it! Posted on 8/3/08 12:56 AM |
 fallenangel | idea originale! Posted on 5/30/08 10:10 AM |
aaanniiaaa | great Posted on 5/23/08 3:05 PM |
mindersusie | so original, I loved it Posted on 12/19/07 11:23 PM |
mitchum78 | I found that very creative. Fun solve Posted on 12/8/07 7:04 AM |
piglet90 | wow how funky is that! Posted on 12/7/07 9:11 PM |
  luweewu | This is a different take on the idea. I was expecting something that looked more like the one that Escher drew. Posted on 12/7/07 5:06 AM |
  ana_lili | very nice! Posted on 12/6/07 7:31 PM |