sudoku puzzles: Vol 1 :Boost your brain power with fun and addictive sudoku puzzles.The Huge Book of Sudoku: 80 Challenging Puzzles

See also:

addictive

by Charlie Max

Paperback

details (USA).

ISBN: 978-1-0866-2397-0

ISBN-10: 1-0866-2397-5

Independently published · July 2019