Sudoku Wear - Sudoku 4x4::Appstore for Android

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Sudoku 4x4 - Hard

Sudoku Generator » Sudoku 4×4

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

Sudoku 4x4, no hints, easy

Thanksgiving Sudoku 4x4

Kids Sudoku 4x4 - Medium

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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