Beginners Sudoku #56638 https://www.livesudoku.com/en/sudoku/easy/56638

Beginners Sudoku #342973 https://www.livesudoku.com/en/sudoku/easy/342973

Hard Sudoku #1287604 https://www.livesudoku.com/en/sudoku/hard/1287604

Beginners Sudoku #109281 https://www.livesudoku.com/en/sudoku/easy/109281

Beginners Sudoku #151373 https://www.livesudoku.com/en/sudoku/easy/151373

Medium Sudoku #829957 https://www.livesudoku.com/en/sudoku/medium/829957

Beginners Sudoku #83845 https://www.livesudoku.com/en/sudoku/easy/83845

Medium Sudoku #782942 https://www.livesudoku.com/en/sudoku/medium/782942

Hard Sudoku #1462912 https://www.livesudoku.com/en/sudoku/hard/1462912

Evil Sudoku #1890130 https://www.livesudoku.com/en/sudoku/evil/1890130