Jigsaw Sudoku instructions and free Jigsaw Sudoku puzzles to play online

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

Sudoku 6x6 - Easy

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6x6 Consecutive Sudoku (Mini Sudoku Series #61)

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Sudoku for Beginners: 4x4, 6x6 and 9x9 Sudoku Puzzles: Easy Sudoku Book for Beginners with Solution

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