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Monday, August 5, 2013

Monday Morning Workout...

Again, regulars here know I'm fond of self-reference puzzles, and "MathMama" recently cited a 'self-referential number square' from Jack Webster:


(...it ain't easy!)
Here's an updated, 'cleaner' version of the same puzzle from Jack (…with the solution available):


and MathMama also links to this Webster page with a few more in the same genre, if your brain is ready for additional punishment:


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