A game in which players take it in turns to try to draw quadrilaterals (or triangles) with particular properties. Is it possible to fill the game grid?

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.

Some puzzles requiring no knowledge of knot theory, just a careful inspection of the patterns. A glimpse of the classification of knots and a little about prime knots, crossing numbers and. . . .

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.

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.

This article invites you to get familiar with a strategic game called "sprouts". The game is simple enough for younger children to understand, and has also provided experienced mathematicians with. . . .

An article for teachers and pupils that encourages you to look at the mathematical properties of similar games.

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 loser is the player who takes the last counter.

A game for 2 players with similarities to NIM. Place one counter on each spot on the games board. Players take it is turns to remove 1 or 2 adjacent counters. The winner picks up the last counter.

A game for 2 or more people, based on the traditional card game Rummy. Players aim to make two `tricks', where each trick has to consist of a picture of a shape, a name that describes that shape, and. . . .

A game for 2 players. Set out 16 counters in rows of 1,3,5 and 7. Players take turns to remove any number of counters from a row. The player left with the last counter looses.

A game in which players take it in turns to turn up two cards. If they can draw a triangle which satisfies both properties they win the pair of cards. And a few challenging questions to follow...

Who said that adding, subtracting, multiplying and dividing couldn't be fun?

Can you explain the strategy for winning this game with any target?

Nim-7 game for an adult and child. Who will be the one to take the last counter?

Can you work out how to win this game of Nim? Does it matter if you go first or second?

Got It game for an adult and child. How can you play so that you know you will always win?

There are nasty versions of this dice game but we'll start with the nice ones...

Some Games That May Be Nice or Nasty for an adult and child. Use your knowledge of place value to beat your opponent.

Have a go at this game which has been inspired by the Big Internet Math-Off 2019. Can you gain more columns of lily pads than your opponent?

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.

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

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. . . .

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

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.

Factors and Multiples game for an adult and child. How can you make sure you win this game?

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

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. . . .

A game to make and play based on the number line.

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

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

Can you spot the similarities between this game and other games you know? The aim is to choose 3 numbers that total 15.

This article supplies teachers with information that may be useful in better understanding the nature of games and their role in teaching and learning mathematics.

Use the tangram pieces to make our pictures, or to design some of your own!

Play this game and see if you can figure out the computer's chosen number.

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

Here is a chance to play a version of the classic Countdown Game.

Slide the pieces to move Khun Phaen past all the guards into the position on the right from which he can escape to freedom.

A Sudoku that uses transformations as supporting clues.

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

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

This article, the second in the series, looks at some different types of games and the sort of mathematical thinking they can develop.