Three carefully selected Sudoku variants in one elegant volume: Flower Sudoku, Outside Sudoku, and Consecutive Sudoku - each a masterclass in a different kind of constraint logic.
What's InsideFlower Sudoku - five overlapping grids in a petal arrangementOutside Sudoku - empty grid with clues placed outsideConsecutive Sudoku - bars between adjacent cells mark consecutive pairs7.5 x 9.25 inch pages on thick, quality paperInstructions for all three typesAll solutions includedThree Perfect Variants. One Curated Collection.By DJAPE - PhD in Computer Science, Washington Post puzzle contributor since 2006. A focused, curated gift for solvers who want three of the best Sudoku variants in a single volume