On one level, sudoku is a simple and fun way to pass the time and keep the brain ticking – but dig deeper, and some ...

You can use this to fill in any missing squares that you can't solve using the normal Sudoku tricks. So far this might not seem groundbreaking, but things start to become interesting when we look ...

You can use this to fill in any missing squares that you can't solve using the normal Sudoku tricks. So far this might not seem groundbreaking, but things start to become interesting when we look ...