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

Sudoku 4x4 - Easy

Sudoku 4x4 Puzzle 3 Sudoku, Puzzles for kids, Math for kids

Math Sudoku Puzzles Digital Download Easy Level 4x4 Grid: 300

Sudoku Puzzles for Kids : Mini Sudoku 4x4, 6x6, 8x8, & 9x9 Puzzle Grids -Easy Sudoku Puzzles & Solutions for Kids and Beginners (Activity Books for Babies) (Paperback)

Sudoku Challenge

Introduction to Sudoku - 4X4 - Level 1 - (6-8 years) - The Activity Books

Printable Sudoku puzzles at beginners level for smaller and bigger kids

Free Printable Letter Sudoku for Kids - 4x4 Easy Letter games for kids, Sudoku, Printable activities for kids

Sudoku for Kids 4x4 - 6x6 - 9x9 180 Sudoku Puzzles - Level: very easy - with solutions (Paperback)

GitHub - nayanbunny/Sudoku-CSharp: Sudoku Generator, Validator and Solver in C# Windows Forms (.net core 3.1). Game on 4x4 and 9x9 Grid with Easy, Medium and Easy Modes.