Beginners Sudoku #172998 https://www.livesudoku.com/en/sudoku/easy/172998

Medium Sudoku #559196 https://www.livesudoku.com/en/sudoku/medium/559196

Evil Sudoku #1790817 https://www.livesudoku.com/en/sudoku/evil/1790817

Beginners Sudoku #447961 https://www.livesudoku.com/en/sudoku/easy/447961

Evil Sudoku #1836500 https://www.livesudoku.com/en/sudoku/evil/1836500

Evil Sudoku #1843478 https://www.livesudoku.com/en/sudoku/evil/1843478

Hard Sudoku #1423303 https://www.livesudoku.com/en/sudoku/hard/1423303

Medium Sudoku #562395 https://www.livesudoku.com/en/sudoku/medium/562395

Beginners Sudoku #286844 https://www.livesudoku.com/en/sudoku/easy/286844

Hard Sudoku #1352567 https://www.livesudoku.com/en/sudoku/hard/1352567