I know how to spell sudoku, but the joined ‘k’s in this Samsung S8500 game represents Kyrill Kober, the developer of this game – or so I think.

There are quite a few sudoku games in every single gaming platform, it’s a popular game like Xs and Os or Tetris. This sudoku, however, has added features that can make it more challenging  - or easier, depending on your logic capability.

I would like to jump straight into one of the additions: X-Sudoku. The normal rules of the game apply here, but in the diagonals, a number may only repeat itself once, and that makes the middle field extremely important. So this could make things more complicated because you have an extra restriction, or it could be easier because you can rule out a variable.

Hyper Sudoku basically introduces another set of 3×3 fields that have the same traditional rules. These blocks overlap the usual blocks and are indicated with a blue background. Experienced gamers can use this to their advantage.

There are the usual high score menus, and the buttons are all placed in an accessible manner, making this SudoKKu game ideal for time-pass; download it as usual from Samsung Apps.