The number of classic 9×9 Sudoku solution grids was shown in 2005 by Bertram Felgenhauer and Frazer Jarvis to be 6,670,903,752,021,072,936,960. Not happy with this, PlayStation have added a few variations of there own:

Prepare to be confused…
Go! Sudoku and Go! Puzzle arrive on PLAYSTATION Network

o Two sets of interactive puzzle games will tax PLAYSTATION 3 owners’ brains this April
o Go! Sudoku and Go! Puzzle are exclusive to PLAYSTATION Network
o Download single games or entire packs – the choice is all yours

Puzzles never looked so good. This April, problem-solving takes on a whole new dimension for PLAYSTATION®3 (PS3™) owners – only on PLAYSTATION®Network1 (PSN), the interactive, evolving space which opens the door to a new world of exciting entertainment opportunities. GO! SUDOKU™ and GO! PUZZLE™ bring brain-teasers to life in interactive, High Definition with multiplayer and online play – and they’re only available as downloads from PSN.

GO! SUDOKU for PLAYSTATION 3

A simple concept with a lot of possibilities. Sudoku presents you with a grid of numbers to complete; place a number between 1 and 9 in an empty cell until the grid is full. All columns, rows and boxes must contain these numbers without duplication in order to win. It sounds easy, but it’s not - and there are four difficulty levels to attempt.

Play on your own or get friends together for a multiplayer battle with up to four of you racing to solve a single grid. And when you’re done beating your friends, you can take your high scores to the global online rankings to see just who’s boss in the fiendish world of Sudoku.

For a taster, you can download the free GO! SUDOKU STARTER PACK playable demo and put your brain to the test. With 10 grids ranging from Easy to Fiendish, it’ll leave you wanting more – so choose from one of four packs or the extra-value GO! SUDOKU FULL PACK which contains all four.

- GO! SUDOKU EASY PACK: 520 games on the simpler side of Sudoku - a great introduction for beginners.

- GO! SUDOKU MILD PACK: 380 games of medium difficulty - a top choice for Sudoku initiates.

- GO! SUDOKU DIFFICULT PACK: 200 tough games to tackle - perfect for Sudoku hotshots.

- GO! SUDOKU FIENDISH PACK: 100 seriously taxing games - the ultimate challenge for Sudoku experts.

- Download the GO! SUDOKU FULL PACK and get a whopping 1200 grids ranging from easy to fiendish, providing a Sudoku experience for everybody.

GO! PUZZLE for PLAYSTATION 3

Go! Puzzle brings you three addictive games - easy to play, but tough to master. With nearly fifteen gaming modes in total – including single-player challenges, head-to-head battles and online free-for-alls – Go! Puzzle is hours of head-scratching fun for players of all ages. And for the competitive puzzle-head, there are global online rankings to compare your knack for conundrum-solving with that of others. Download a single game or get all three with the Go! Puzzle All Puzzles Pack.

- GO! Puzzle Aquatica: groups of discarded mines are sinking to the bottom of the sea and piling up dangerously. It’s down to you to line up mines of the same colour and cause them to explode safely. Puzzle Mode throws brain-teasing challenges into the mix while multiplayer Battle Mode provides weapons to use on your opponents.

- Go! Puzzle Swizzle Blocks: Coloured blocks are building up dangerously quickly on your screen; get rid of them by rotating them into squares of matching colours. You can play for points in Challenge Mode, give your brain an extra workout in Puzzle Mode or race against the clock in Time Attack Mode.

- Go! Puzzle Skyscraper: Puzzle your way up seven cities’ worth of lofty towers – each with its own difficulties to overcome and its own unique routes to the top. Players can tackle the Tower Tour, face down tests of skill in Battle Mode or compete against an opponent in fast and furious Race Mode.

- Download the Go! Puzzle All Puzzles Pack and enjoy all three puzzles in one easy download.

Downloading Go! Sudoku and Go! Puzzle is simple - just follow these steps:

1) Connect your PS3 to Broadband and register on PSN
2) Go to the PLAYSTATION®Store and add your Go! title to your cart
3) Proceed to the checkout. You will need to have funds in your PLAYSTATION Store wallet to complete your purchase.
4) Download your game and enjoy!

Go! Sudoku for PLAYSTATION 3 is available on April 13th, followed by Go! Puzzle on April 20th. Both are available only as downloads from PSN.