Twodoku Double Sudoku 3 x 3 Overlap Level 5: Very Hard Vol. 27: Play Sensei Sudoku With Solutions 9x9 Nine Numbers Grid Hard Level Volumes 1-40 Cross ... Puzzles Challenge For All
Incredibly Hard Sudokus: Adult activity book 3X3 and 4X4 X-sudoku, Jigsaw sudoku, Killer sudoku X-sudoku+jigsaw+killer sudoku! With the solutions as QR code near every sudoku!: Biscardi, Nicola: 9798644897605: Amazon.com: Books
Sudoku 3x3 50 Easy Large Print Puzzles: One Puzzle Per Page: Puzzles, Insignia: 9781520472478: Amazon.com: Books
Anti Diagonal Sudoku: 250 Hard to Very Hard Anti Diagonal Sudoku Puzzles ( Sudoku Anti Diagonal): Mindful Puzzle Books: 9781655479519: Amazon.com: Books
Fun Sudoku Puzzle book #1 Easy: D, Edrian, K, Ron: 9781072723240: Amazon.com: Books