Two sudokus in one. Challenge yourself to make the necessary connections.

A game for two people, who take turns to move the counters. The player to remove the last counter from the board wins.

Solve this Sudoku puzzle whose clues are in the form of sums of the numbers which should appear in diagonal opposite cells.

This pair of linked Sudokus matches letters with numbers and hides a seasonal greeting. Can you find it?

A Sudoku that uses transformations as supporting clues.

This second Sudoku article discusses "Corresponding Sudokus" which are pairs of Sudokus with terms that can be matched using a substitution rule.

Two sudokus in one. Challenge yourself to make the necessary connections.

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.

Four numbers on an intersection that need to be placed in the surrounding cells. That is all you need to know to solve this sudoku.

A Sudoku based on clues that give the differences between adjacent cells.

This sudoku requires you to have "double vision" - two Sudoku's for the price of one

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 Sudoku with clues given as sums of entries.

A maths-based Football World Cup simulation for teachers and students to use.

All you need for this game is a pack of cards. While you play the game, think about strategies that will increase your chances of winning.

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.

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...

This article for teachers describes several games, found on the site, all of which have a related structure that can be used to develop the skills of strategic planning.

Match pairs of cards so that they have equivalent ratios.

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.

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. . . .

Given the products of diagonally opposite cells - can you complete this Sudoku?

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.

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.

A game for 2 people. Take turns joining two dots, until your opponent is unable to move.

Everthing you have always wanted to do with dominoes! Some of these games are good for practising your mental calculation skills, and some are good for your reasoning skills.

Advent Calendar 2010 - a mathematical game for every day during the run-up to Christmas.

Can you beat Piggy in this simple dice game? Can you figure out Piggy's strategy, and is there a better one?

This is a simple version of an ancient game played all over the world. It is also called Mancala. What tactics will increase your chances of winning?

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 off again?

This article shows how abstract thinking and a little number theory throw light on the scoring in the game Go.

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.

We think this 3x3 version of the game is often harder than the 5x5 version. Do you agree? If so, why do you think that might be?

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 moves.

Start with any number of counters in any number of piles. 2 players take it in turns to remove any number of counters from a single pile. The winner is the player to take the last counter.

A simple game of patience which often comes out. Can you explain why?

Spiralling Decimals game for an adult and child. Can you get three decimals next to each other on the spiral before your partner?

Square It game for an adult and child. Can you come up with a way of always winning this game?

Take turns to place a decimal number on the spiral. Can you get three consecutive numbers?

Here is a solitaire type environment for you to experiment with. Which targets can you reach?

Practise your diamond mining skills and your x,y coordination in this homage to Pacman.