David Karn Sudoku Variations - Medium to Hard Vol 1 : 90 Large Print Puzzles - 9 Sudoku Variants
Subtitle: X, Hyper, Twins, Triathlon a+B, Marathon, Samurai, 12x12, 16x16 - 16-24 Pt Font Size, 8. 5x11 Format
Publisher: Independently Published
Published: 2019
Language: eng
ISBN-13: 9781698909073