Third-Degree Black Belt Sudoku

Front Cover
Sterling Publishing Company, Inc., Aug 1, 2009 - Games - 192 pages
3 Reviews

Watch out--these sudoku might crush even the most stalwart of solvers!

 

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I'm enjoying this book, but it is not hard enough. I think one way to up the ante would be to time yourself on each puzzle.

User Review - Flag as inappropriate

Really good Sudoku book, BUT not challenging enough. I learned on Franks White Belt Book and graduated thru the ranks to the highest book (this one) and it is not challenging enough for me. Any ideas???

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