Instructions for Add up to 20 number puzzle

The object of the game is to spin each ring so that in each spoke, all the numbers add up to 20. A spoke is three rings that have a straight line running on either side from the inner-most ring to the outer-most ring.

When the game has loaded, click on the green GO! button to start.

To spin a ring, click on one of the two curved arrows in the middle below the rings. To select another ring, click on the straight arrows at either edge.

When you think you have the right answer, then click on the check button and if you are wrong it will tell you. If you are right then you have won the game!

If you want to see the solution, then click on the I give up! button. You cannot use this to win the game, though!

This game requires the Adobe Flash plug-in. See the Getting Started Help pages, in the section "What do I need to view this site?" for more details.