Working Systematically - Advanced

Ante Up

Age 16 to 18
Challenge Level

Use cunning to work out a strategy to win this game.

A Long Time at the Till

Age 14 to 18
Challenge Level

Try to solve this very difficult problem and then study our two suggested solutions. How would you use your knowledge to try to solve variants on the original problem?

Stage 5 Cipher Challenge

Age 16 to 18
Challenge Level

Can you crack these very difficult challenge ciphers? How might you systematise the cracking of unknown ciphers?

Sorted

Age 14 to 18
Challenge Level

How can you quickly sort a suit of cards in order from Ace to King?