|Rare grouped solution: Tan Tricks II|
Above is a nice solution sent us in 2009 by Ken Blackledge of Tan Tricks II with the tritans forming a separate symmetrical group. We had also hoped to see a solution with grouped tritans that don't touch the border and, if possible, are symmetrical as well. In 2015 George Sicherman sent us these handsome solutions derived by computer:
Now we have to wonder how many other symmetrical internal groups the tritans can form!
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