AppAdvice has teamed up with MeganeSoft in order to offer you a chance to win one of five promo codes for Kokono ($2.99) for iPad.

Are those same old Sudoku puzzles becoming a little tiresome to complete? Maybe it’s time to try Kokono, a new puzzle game that will test your mathematical prowess and your patience.

The object of the game is simple: just match the sum goals on the top and left sides of the screen by altering the number tile’s mathematical signs. The current sum of each column and row can be viewed on the right and bottom sides of the screen.

Can I get a hint?

Accomplishing this seemingly simple task, however, is much more difficult than it sounds. Like Sudoku, changing one tile’s sign can alter the whole game board, so it’s best to work your way from the less challenging rows and columns to the longer ones. Your moves and the amount of time it takes to solve each puzzle are also constantly being tracked, so you’ll definitely want to make accurate and quick changes to each tile’s sign.

All game boards consist of 81 tiles, but many boards have stone tiles that can not be manipulated. The game includes over 20 different boards, the ability to create your own boards, random number assignments and solutions, two modes, five unlockable themes, customizable panel positions and colors, and a built-in tutorial.

To have a chance at winning one of two Kokono promo codes, simply hit that blue tweet button near the bottom of this page or retweet this post from your favorite Twitter app before 11:59 PM PST tonight (December 1). We will then search the Twitterverse for all of the retweets and randomly choose our lucky winners. The winners will be notified via Twitter, so please be sure to follow us so we can send you your promo code via a direct message.

Non-Twitter users and those of you who want to increase your odds of winning can simply leave a relevant comment below before 11:59 PM PDT tonight to have a chance at winning one of the other three promo codes.

Feel free to participate in the giveaway via either or both methods. Only one entry per person per method is allowed, totaling up to two entries per person if using both.