You may also like

problem icon


After some matches were played, most of the information in the table containing the results of the games was accidentally deleted. What was the score in each match played?

problem icon

Eight Dominoes

Using the 8 dominoes make a square where each of the columns and rows adds up to 8

problem icon


There are exactly 3 ways to add 4 odd numbers to get 10. Find all the ways of adding 8 odd numbers to get 20. To be sure of getting all the solutions you will need to be systematic. What about a total of 15 with 6 odd numbers?


Stage: 3 Challenge Level: Challenge Level:2 Challenge Level:2

This was a popular problem that was answered correctly by many of you. The messages say "HELP ME" and "BROKEN".

Mathew Ladley from Saddleworth School reasoned as follows:

"For the first answer I narrowed down the possibilities of the broken pin - either the bottom right or the middle right one (since these hadn't been used). So then I just worked out what letter each symbol could possibly be, and worked it out from there..."

Ben Goulding from Whitgift School added:

"The dot on the middle right is not working. Some letters do not need this dot so do not get caught out."

Catherine Y and Yi Jean C from North London Collegiate decoded the second message as follows:

"We made a list of possible letters for each symbol, allowing either no mistakes or 1 mistake. We got a list as follows:

First letter could be: BFHL

Second letter could be: NORZ

Third letter could be: NORZ

Fourth letter could be: KLMOU

Fifth letter could be: DEHO

Sixth letter could be: MNPX

From here, we tried to make words:

The first two letters could either be Bo, Fo, Ho, Br or Lo.

We just tried various words until we got to BROKEN!!!"