The goal of the game is to get rid of all your cards by addition, subtraction, division, multiplication and use of parentheses.

There are 4 difficulty levels and a number of 'targets'. The goal is to get rid of all your cards before you run out of targets. The 'target' is the number you need to calculate with your cards, but you can't use more then four cards.

When you get rid of all your cards you earn points for the solved target, and the remaining seconds. The faster you are the more points. A higher difficulty will also get you more point per solved 'target'.

Difficulty levels

There are four levels:

• Easy, card numbers ranging 1 to 10
• Normal, card numbers ranging 1 to 15
• Advanced, card numbers ranging 1 to 25
• Hard, card numbers ranging 1 to 50

Practice

Choose the practice mode to receive infinite targets. But only the 5 or 10 mode will get you points.

Solution

When you're stuck you can use the 'solution' button to present you with an example, but you lose the points for that round.