There's an understated elegance to Rush Hour, one of the most inspired and intriguing sliding block puzzles we've so far encountered here in the lab at gadgetshop HQ. It's designed to challenge players of all ages, teaching logical progression, problem solving and sequential-thinking skills. And that's just to open the box.

This multi award-winning puzzle - and its inventor Nob Yoshigahara - have picked-up no fewer than 21 gongs in the past decade; a surefire testament to its longevity, durability and worldwide appeal.

The objective sounds easy in theory. Drive your red car out of the playing grid and escape to freedom. But in order to so, you'll first need to set up the traffic on a game grid to match one of 40 playing cards, then shift all the blocking cars and trucks out of your way. This is more easily said than done, as a clear and transparent set of rules then come into play.

To proceed, one simply needs to move one vehicle at a time, in a long sequence of moves designed to free the red car from the logjam and out of the parking lot.

All of which will have one scratching one's noggin- and driving one to the web for a solution. Brilliantly infuriating - and infuriatingly brilliant.