See also: Matching topics (1)

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

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

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

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

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

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

The next ten people coming into a store will be asked their birthday. If the prize is £20, would you bet £1 that two of these ten people will have the same birthday ?

A pair of Sudokus with lots in common. In fact they are the same problem but rearranged. Can you find how they relate to solve them both?

Prove that 3 times the sum of 3 squares is the sum of 4 squares. Rather easier, can you prove that twice the sum of two squares always gives the sum of two squares?

A pair of Sudoku puzzles that together lead to a complete solution.

This Sudoku problem consists of a pair of linked standard Suduko puzzles each with some starting digits

Can you solve the clues to find out who's who on the friendship graph?

Teacher resources on working systematically at secondary level

Shogi tiles can form interesting shapes and patterns... I wonder whether they fit together to make a ring?

These problems are best solved using systematic approaches.

A particular technique for solving Sudoku puzzles, known as "naked pair", is explained in this easy-to-read article.

Are all the possible combinations of two shapes included in this set of 27 cards? How do you know?

A paradox is a statement that seems to be both untrue and true at the same time. This article looks at a few examples and challenges you to investigate them for yourself.

Here is a collection of puzzles about Sam's shop sent in by club members. Perhaps you can make up more puzzles, find formulas or find general methods.

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

This article describes no ordinary maths lesson. There were 24 children, mostly Years 3 and 4, and there were 17 adults working with them - mothers, fathers, one grandmother and two grandfathers, a. . . .

All the girls would like a puzzle each for Christmas and all the boys would like a book each. Solve the riddle to find out how many puzzles and books Santa left.

Complete these two jigsaws then put one on top of the other. What happens when you add the 'touching' numbers? What happens when you change the position of the jigsaws?

Resources to accompany Charlie's workshop at Walthamstow School for Girls.

Investigate factors and multiples using this interactive Excel spreadsheet. Use the increment buttons for experimentation and feedback.

A big prize was offered for solving The Eternity Puzzle, a jigsaw with no picture and every piece is the same on both sides. The finished result forms a regular dodecagon (12 sided polygon).

Page of resources for STEP Prep Summer School 2014

Use Excel to practise adding and subtracting fractions.

Can you crack the code, solve the puzzle and think like a mathematician? Have a go at one of our puzzles and send us your solution.

There is nothing half so much worth doing as simply messing about in boats...

Jenny Murray writes about the sessions she leads in schools for parents to work alongside children on mathematical problems, puzzles and games.

This resource explores how card tricks can provide an entertaining and often surprising forum for mathematics.

Heads or Tails - the prize doubles until you win it. How much would you pay to play?

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.

Calling all maths detectives! This feature focuses on lots of fun problems for children to solve.

There is a long tradition of creating mazes throughout history and across the world. This article gives details of mazes you can visit and those that you can tackle on paper.

This article looks at the importance in mathematics of representing places and spaces mathematics. Many famous mathematicians have spent time working on problems that involve moving and mapping. . . .