World Puzzle Federation - Hmm What about declaring today to be an International Sudoku 4x4 Day? Solve online

Sudoku Primer 130 - 4x4 sudoku for kids - sudoku variant

Sudoku 4x4 Printable (Great for Kids!)

Sudoku 4x4, no hints, easy

1,000 Sudoku: 4x4, 6x6, 8x8, & 9x9 Graphic by SKLM · Creative Fabrica

Sudoku for Kids: 4x4, 6x6, 8x8, & 9x9 Puzzle Grids - Gradually Introduce Children to Sudoku and Grow Logic Skills!: Barnes, Jean: 9798699661510: : Books

I hired a developer to create a sudoku generator for me. It generates 4x4, 6x6 and 9x9 with the difficulties easy, medium, hard, very hard. This is from a 6x6 very hard

Abstract Blue 4x4 Sudoku Template Notepad

The Big Book of Kindergarten Sudoku : 4x4 Sudoku and Wordoku Puzzles for Kids by J. Green (2017, Trade Paperback) for sale online

Irregular fortress sudoku puzzle pack — Rätselportal — Logic Masters Deutschland

4x4 sudoku puzzles to print for kids