Test your powers of logic with these challenging Su Doku puzzles. A collection of 200 previously unpublished Fiendish Su Doku puzzles. Perfect for the expert solver in need of a constant supply of ultra-difficult puzzles. Guaranteed to provide hours of abs
Test your powers of logic with these challenging Su Doku puzzles. A collection of 200 previously unpublished Fiendish Su Doku puzzles. Perfect for the expert solver in need of a constant supply of ultra-difficult puzzles. Guaranteed to provide hours of absorbing, brain-stretching entertainment.
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