Evil Sudoku #1649221 https://www.livesudoku.com/en/sudoku/evil/1649221

Evil Sudoku #1845277 https://www.livesudoku.com/en/sudoku/evil/1845277

Beginners Sudoku #54423 https://www.livesudoku.com/en/sudoku/easy/54423

Beginners Sudoku #276483 https://www.livesudoku.com/en/sudoku/easy/276483

Medium Sudoku #907844 https://www.livesudoku.com/en/sudoku/medium/907844

Beginners Sudoku #260993 https://www.livesudoku.com/en/sudoku/easy/260993

Beginners Sudoku #376602 https://www.livesudoku.com/en/sudoku/easy/376602

Medium Sudoku #988417 https://www.livesudoku.com/en/sudoku/medium/988417

Beginners Sudoku #50533 https://www.livesudoku.com/en/sudoku/easy/50533

Hard Sudoku #1478314 https://www.livesudoku.com/en/sudoku/hard/1478314