Sudoku Variants Puzzle Book for Adults: 300 Puzzles Including Classic Sudoku, Killer, Jigsaw, Hoshi, Outside, Greater Than, Consecutive, Flower, and Samurai

Sudoku Variations Puzzle Book for Adults 300+ Hard Puzzles: Center Dot, Consecutive,...

sudoku variety puzzle book for adults: 300 Killer sudoku, Arrow flower Hoshi,...

Sudoku Variations Easy Medium Volume 1: Book for Adults with 5 Puzzle...

Flower Sudoku and Outside Sudoku: variants puzzles (Outside Puzzle Books)