Description from the market.....
Do you like mind games but are tired of matching colors, shapes, or objects? Then challenge yourself with CHALLENGE 11. A game as addictive as Bejeweled and as tough as sudoku.
Challenge eleven comes with a Standard and Advanced mode of play. Each game type provides seven levels of difficulty that are bound to keep you interested.
In each level you must match numbered tiles so they add up to 11. You can use 2,3,4 or 5 tiles to make your 11. You must manipulate the game board by matching tiles so that you satisfy your objectives.
Meet your objectives before your time runs out or your game is over.