Here we have one standard set of dominoes:

Find the edges of the dominoes.

(In reply to Solution by tomarken)

Tomarken, you have a problem. You have two 4-4 combinations, one at Row 1, Col 5 and 6, the second at Row 4, Col 4 and 5.

Edited to add:

Great problem Percy, thanks.

Edited on March 24, 2006, 4:33 pm

Posted by Hugo on 2006-03-24 16:32:05