A game that tests your understanding of remainders.
An activity based on the game 'Pelmanism'. Set your own level of challenge and beat your own previous best score.
Given the products of diagonally opposite cells - can you complete this Sudoku?
A game for two people, or play online. Given a target number, say 23, and a range of numbers to choose from, say 1-4, players take it in turns to add to the running total to hit their target.
Two sudokus in one. Challenge yourself to make the necessary
A Sudoku that uses transformations as supporting clues.
A Sudoku with clues as ratios or fractions.
This pair of linked Sudokus matches letters with numbers and hides a seasonal greeting. Can you find it?
A Sudoku based on clues that give the differences between adjacent cells.
A Sudoku with clues as ratios.
This second Sudoku article discusses "Corresponding Sudokus" which are pairs of Sudokus with terms that can be matched using a substitution rule.
Unmultiply is a game of quick estimation. You need to find two numbers that multiply together to something close to the given target - fast! 10 levels with a high scores table.
Take turns to place a decimal number on the spiral. Can you get three consecutive numbers?
A Sudoku with clues given as sums of entries.
This sudoku requires you to have "double vision" - two Sudoku's for
the price of one
The idea of this game is to add or subtract the two numbers on the dice and cover the result on the grid, trying to get a line of three. Are there some numbers that are good to aim for?
First Connect Three game for an adult and child. Use the dice numbers and either addition or subtraction to get three numbers in a straight line.
A game for 2 people. Take turns placing a counter on the star. You win when you have completed a line of 3 in your colour.
Spiralling Decimals game for an adult and child. Can you get three decimals next to each other on the spiral before your partner?
The aim of the game is to slide the green square from the top right
hand corner to the bottom left hand corner in the least number of
A Sudoku with a twist.
A simple game of patience which often comes out. Can you explain
Square It game for an adult and child. Can you come up with a way of always winning this game?
Basic strategy games are particularly suitable as starting points
for investigations. Players instinctively try to discover a winning
strategy, and usually the best way to do this is to analyse. . . .
This article explains the use of the idea of connectedness in networks, in two different ways, to bring into focus the basics of the game of Go, namely capture and territory.
The game of go has a simple mechanism. This discussion of the principle of two eyes in go has shown that the game does not depend on equally clear-cut concepts.
A game for 2 players
A game for 2 players. Given an arrangement of matchsticks, players
take it is turns to remove a matchstick, along with all of the
matchsticks that touch it.
This is a game for two players. You will need some small-square
grid paper, a die and two felt-tip pens or highlighters. Players
take turns to roll the die, then move that number of squares in. . . .
Follow-up to the February Game Rules of FEMTO.
A simple game for 2 players invented by John Conway. It is played
on a 3x3 square board with 9 counters that are black on one side
and white on the other.
Here is a solitaire type environment for you to experiment with. Which targets can you reach?
A game for 2 players that can be played online. Players take it in turns to select a word from the 9 words given. The aim is to select all the occurrences of the same letter.
A game for 2 players. Take turns to place a counter so that it occupies one of the lowest possible positions in the grid. The first player to complete a line of 4 wins.
Collect as many diamonds as you can by drawing three straight lines.
The computer starts with all the lights off, but then clicks 3, 4
or 5 times at random, leaving some lights on. Can you switch them
Advent Calendar 2010 - a mathematical game for every day during the
run-up to Christmas.
A game for 2 players. Can be played online. One player has 1 red
counter, the other has 4 blue. The red counter needs to reach the
other side, and the blue needs to trap the red.
Can you spot the similarities between this game and other games you know? The aim is to choose 3 numbers that total 15.
There are nasty versions of this dice game but we'll start with the nice ones...
Use the tangram pieces to make our pictures, or to design some of
A game to make and play based on the number line.
Here is a machine with four coloured lights. Can you develop a strategy to work out the rules controlling each light?
Practise your diamond mining skills and your x,y coordination in this homage to Pacman.
An ordinary set of dominoes can be laid out as a 7 by 4 magic rectangle in which all the spots in all the columns add to 24, while those in the rows add to 42. Try it! Now try the magic square...
Four numbers on an intersection that need to be placed in the
surrounding cells. That is all you need to know to solve this
Can you be the first to complete a row of three?
This article shows how abstract thinking and a little number theory throw light on the scoring in the game Go.