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Beyond Black Belt Sudoku: If you have to ask, it's too hard for you. by Frank Longo

Beyond Black Belt Sudoku: If you have to ask, it's too hard for you.

Frank Longo

192 pages • first pub 2011 (editions)

informative inspiring reflective medium-paced
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Description

For diehards only These incredibly difficult puzzles are handcrafted for the sudoku warrior who dares to go where other solvers fear to tread. So, if you're armed with the highest-level strategies, get ready for the most satisfying fight your lif...

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