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

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 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.

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

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.

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

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

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

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

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.

Use your knowledge of place value to try to win this game. How will you maximise your score?

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.

Try to stop your opponent from being able to split the piles of counters into unequal numbers. Can you find a strategy?

Given the products of diagonally opposite cells - can you complete 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. . . .

In this game for two players, the idea is to take it in turns to choose 1, 3, 5 or 7. The winner is the first to make the total 37.

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.

Add or subtract the two numbers on the spinners and try to complete a row of three. Are there some numbers that are good to aim for?

This is a challenging game of strategy for two players with many interesting variations.

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

Here is a version of the game 'Happy Families' for you to make and play.

Here are some more upper primary strategy games for you to play.

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.

Can you beat the computer in the challenging strategy game?

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

This article outlines how strategy games can help children develop logical thinking, using examples from the NRICH website.

A shunting puzzle for 1 person. Swop the positions of the counters at the top and bottom of the board.

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

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

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

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.

An interactive activity for one to experiment with a tricky tessellation

A train building game for two players. Can you be the one to complete the train?

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

Here are a collection of games from around the world to try during the holidays or the last few weeks of term.

The game uses a 3x3 square board. 2 players take turns to play, either placing a red on an empty square, or changing a red to orange, or orange to green. The player who forms 3 of 1 colour in a line. . . .

Use your addition and subtraction skills, combined with some strategic thinking, to beat your partner at this game.

This is a game for 2 players. Each player has 4 counters each, and wins by blocking their opponent's counters. A good follow-on from two stones.

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

Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a square.

In this article for teachers, Liz Woodham describes the criteria she uses to choose mathematical games for the classroom and shares some examples from NRICH.