Which fits best - a square peg in a round hole, or a round peg in a square hole?

Count up your booty of jewels and potions!

The 3 3 8 8 puzzle

A greek soldier, and a persion soldier walk into a battle...

Similar triangles and colouring the plane

From September 1999 onwards, PASS Maths is joining forces with its sister site NRICH to offer many more puzzles changed regularly on the 1st of every month.

Eugen Jost is a Swiss artist whose work is strongly influenced by mathematics. He sent us this Postcard from Italy, telling us about his work and the important roles that nature and numbers play in it.

Put the gobbling goat on a diet

Can you collect the whole set?