Fools line up

Play the perfect prank with this paper puzzle. It looks simple, but it's harder than it looks. Print a couple of copies and hand them out to your victims. Watch them as they sweat with effort trying to figure it out. You'll have the solution on hand to show them how easy it is.

What you need:

• computer with internet access
• paper
• printer
• coloured markers

Number of players:

Activity:

Can your April Fools' victim find the solution?

Print out the problem sheet and hand it out to one or more of your friends.

Explain the rules:

• You must join the squares of the same colour with a single line.
• You must not cross another line.
• You must stay within the big box.

Sit back and watch them puzzle over this puzzle. When they've had enough, show them your printed solution.

Print out Fools line up problem.

Print the Fools line up solution.