Mystery Calculator

"Mystery Callendar" is   simple HTML web app that is based on a simple thing I got from a christmas cracker. The game starts by asking you to choose a number between 1 and 63. Once you have selected your number, you will be presented with 6 cards, each containing 32 numbers.

All you have to do is to click on the cards that contain your number. The game will then sum up the first numbers on the cards that you selected and reveal your chosen number. If you selected all the cards with your number on them correctly, the first numbers on those cards will always add up to your number.