53628858
9781790378197
David Smith is the author of 'Collection of Different Sudoku - 400 Master Puzzles: Sudoku, Sudoku X, Killer Sudoku, Jigsaw Sudoku,Consecutive Sudoku, Kropki Sudoku, Greater Than, Sudoku Mine vol.4', published 2018 under ISBN 9781790378197 and ISBN 1790378192.
[read more]