Sudoku Rocks! itself rocks . . . big time. This is indeed the complete Sudoku book, as it’s loaded with puzzles (over 500 at 8 levels of difficulty), instruction, and my own specialty puzzles, such as Alphabet Hybrid, Math Hybrid, and Word Guess puzzles. I include a section of puzzles that are so difficult, requiring the most advanced solving methods, such as Unique Rectangles, XYZ Wings, and Forcing Chains, that only bona fide Sudoku experts, maybe 1 in 1,000 players, will be able to solve them, and with much time and difficulty at that. (Yeah, that’s kind of a challenge!) Kirkus Reviews, in their 2017 review, called Sudoku Rocks! “Tantalizing mind candy.”

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