KENKEN - Train Your Brain (Nokia 2680)

Dubbed Sudoku with a brain, KENKEN is an addictive and simple concept that elevates number puzzles and brain trainers to new heights. Simple to learn but difficult to master, KENKEN requires simple arithmetic calculations and logic to decipher the ingenious puzzles. The game includes 250 different puzzles from beginner to advanced, and puzzles can be on any size grid, from 3 x 3 up to 6 x 6.