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Revenge of Killer Sudoku 5: 150 puzzles (Revenge of Killer Sudoku Puzzle Books)

The Way Of Samurai (The Way of Samurai Sudoku Puzzles Books)

Jigsaw Sudoku vol 3: 160 very twisted puzzles (Jigsaw Sudoku Books)

Jigsaw Sudoku Compendium: Very twisted puzzles

Killer Sudoku and other puzzle variants (Killer Sudoku Variations)

The Way of Samurai 120 Samurai All new Sudoku puzzles (The Way of Samurai Sudoku Puzzles Books)

Revenge of Killer Sudoku 4: 150 Of All New Puzzles (Revenge of Killer Sudoku Puzzle Books)

Triangular Sudoku: 150 TriDoku puzzles

Picross, Hanjie, Griddlers, Nonograms: 120+20! Puzzles (Hanjie Books)

Samurai Sudoku and other puzzle variants: From Florence with love

Revenge of Killer Sudoku (Revenge of Killer Sudoku Puzzle Books)

Outside Sudoku and its variants (Outside Sudoku Puzzle Books)

Killer Samurai Sudoku: 55 puzzles

The Way of Samurai: 101 Samurai Sudoku puzzles (The Way of Samurai Sudoku Puzzles Books)

Zero Killer Sudoku: 101 puzzles: Maximum Challenge (Killer Sudoku Variations)

Jigsaw Sudoku vol 2: 160 very twisted puzzles (Jigsaw Sudoku Books)

Killer Samurai Sudoku vol. 3: 75 puzzles

Hitori: 150 puzzles that won’t leave you alone!

Hidoku: the next puzzle craze – 200 puzzles (volume 2) (Hidoku Puzzle Books)

Killer Sudoku Compendium: 101 puzzles of various deadliness (Killer Sudoku Variations)

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