Miscellaneous Books
Intriguing Sudoku puzzles for kids: fun brain teasers to improve children's logic and math skills!
Intriguing Sudoku puzzles for kids: fun brain teasers to improve children's logic and math skills!
https://www.bizrate.co.uk/miscellaneousbooks/intriguing-sudoku-puzzles-for-kids-oid38364428002.html