Freddie Manners, of Packwood Haugh School in Shropshire solved an alphanumeric without using the extra information supplied and this article explains his reasoning.
The country Sixtania prints postage stamps with only three values 6 lucres, 10 lucres and 15 lucres (where the currency is in lucres).Which values cannot be made up with combinations of these postage. . . .
Find a great variety of ways of asking questions which make 8.
This article explains how to make your own magic square to mark a special occasion with the special date of your choice on the top line.
An account of some magic squares and their properties and and how to construct them for yourself.
Three dice are placed in a row. Find a way to turn each one so that the three numbers on top of the dice total the same as the three numbers on the front of the dice. Can you find all the ways to do. . . .
Find out about Magic Squares in this article written for students. Why are they magic?!
Here is a chance to play a fractions version of the classic Countdown Game.
Use these four dominoes to make a square that has the same number of dots on each side.
Special clue numbers related to the difference between numbers in two adjacent cells and values of the stars in the "constellation" make this a doubly interesting problem.
Use the 'double-3 down' dominoes to make a square so that each side has eight dots.
Fancy a game of cricket? Here is a mathematical version you can play indoors without breaking any windows.
This Sudoku, based on differences. Using the one clue number can you find the solution?
Can you be the first to complete a row of three?
Using the 8 dominoes make a square where each of the columns and rows adds up to 8