ThinkFun Sudoku 5x5 - 48 Multi-level Challenges (Contents: 48 Cards / 25 Magnetic Number Tokens / Self-contained Travel Box with Magnetic Game Play Surface / Instructions / Solutions): Amazon.com: Books
Chain Sudoku Puzzle Books - 400 Easy to Master Puzzles 5x5 by Dmytro Khomiak
Gabriel Fernandes' Puzzle Collection: 5x5 Sudoku - Vol.1
Sudoku Small Straights - 200 Easy to Normal Puzzles 5x5 (Volume 27) by Dart Veider 1703978781 9781703978780
Gabriel Fernandes' Puzzle Collection: 5x5 Sudoku - Vol.1
Chain Sudoku: 250 Easy to Medium Chain Sudoku Puzzles 5x5 (Chain Puzzles): Mindful Puzzle Books: 9781070915081: Amazon.com: Books