Title: Famous Frog Sudoku 200 Medium Puzzles With Solutions: A Bathroom Sudoku Pocket Series Book, Author: Dan Croker
Title: Famous Frog Sudoku 200 Hard Puzzles With Solutions: A Bathroom Sudoku Pocket Series Book, Author: Dan Croker
Title: Famous Frog Sudoku 200 Very Hard Puzzles With Solutions: A Bathroom Sudoku Pocket Series Book, Author: Dan Croker