In the link below you will find about ten more practice puzzles which have to be solved with the alternative solution method. As usual, the sudoku must first be solved using steps 1-7 from the book. At some point they will get stuck, and it is time to start using the alternative solution method, as described in the last chapter of “Solve each sudoku”. These practice puzzles are easy to do, you only get stuck once, and if you find the key then the puzzle can be solved without any problems. If one is then ready for even more difficult sudokus, one can resort to the book “Solving Difficult Sudokus”.