Thomas H. O'Beirne

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This page gathers all puzzles presented at Puzzles.COM, which are either created by Thomas H. O'Beirne or made after some of his puzzle ideas.

Four Circles
Four Circles
by Thomas H. O'Beirne
The four intersecting circles have to be drawn in the traditional way - neither taking a pencil off the paper, nor going over any part of the line twice.
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Last Updated: June 23, 2010 top
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