"4D Sudoku^™ is the perfect puzzle, I am very excited to be the first to solve it." said Nyles Heise of San Jose, California. Nyles completed the puzzle in 65 hours 9 minutes, to become the first person to solve the online game and win a hand-held 4D Sudoku^™ puzzle.

He said, "At first glance the puzzle looks almost unsolvable. However, after close inspection I found there is much structure that increases the chance of success greatly."

For the uninitiated - 4D Sudoku^™ comes in the form of a tactile hand-held puzzle made up of 27 magnetic cubes, and an interactive online game.

It's the puzzle enthusiast’s dream, the ultimate brainteaser – a puzzle within a puzzle!

From the moment you take your 4D Sudoku^™ out of its box, you realise you have something magical in your hands. The distinctive orange and white cubes seem to be alive, with a force of their own!

The challenge is to construct a square block of numbered cubes, arranged in such a way that every possible row, column and side around the block contains each of the numbers 1 - 9. Meanwhile inside the block, every 3x3 section, sliced vertically or horizontally, also consists of the digits 1-9. So pit your wits against the invisible force of the 27 cubes in this ingenious puzzle.

Why not give your brain a workout, and try and win a hand-held 4D Sudoku^™ puzzle. The first 20 people to successfully complete the online game, will will a hand-held puzzle.

Click on the link below to play online now >>
www.4dsudoku.net/play

If you just can't wait to get your hands on one of our 4D Sudoku^™ puzzles, then you can buy it exclusively online on our website, as it's not available in any shops until the new year.

Click on the link below to buy it now >>
www.4dsudoku.net