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Title: Don't waste your money!
Review: This set of puzzles suffers from several faults... The grid squares are too large, the paper is too coarse, and even on some easy puzzles, you are forced to guess, in spite of the author's admonition that you should "never guess!" In addition, I found that some puzzles have ambiguous solutions... that is, they have more than one solution.The author should, at a minimum, have run these puzzles through a solver application (they can be found online) to eliminate the guesswork and multiple solutions.
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