# Puzzles

## Archive

Show me a random puzzle**Most recent collections**

#### Advent calendar 2018

#### Sunday Afternoon Maths LXVI

Cryptic crossnumber #2#### Sunday Afternoon Maths LXV

Cryptic crossnumber #1Breaking Chocolate

Square and cube endings

#### Sunday Afternoon Maths LXIV

Equal lengthsDigitless factor

Backwards fours

List of all puzzles

## Tags

ellipses planes area games angles partitions floors speed coordinates sequences wordplay menace crosswords books perimeter fractions means factors square numbers christmas sport dates grids regular shapes advent differentiation algebra volume clocks division surds perfect numbers complex numbers star numbers probability chalkdust crossnumber integration dice sums numbers cryptic crossnumbers unit fractions shape spheres factorials triangles polygons number chocolate time calculus doubling chess addition triangle numbers hexagons proportion pascal's triangle people maths routes remainders indices rectangles 2d shapes geometry graphs lines square roots prime numbers averages odd numbers percentages trigonometry parabolas dodecagons palindromes colouring functions rugby cube numbers probabilty coins cards sum to infinity ave multiplication bases integers logic irreducible numbers money circles folding tube maps quadratics taxicab geometry 3d shapes shapes mean crossnumbers arrows multiples symmetry squares digits cryptic clues## 5 December

You start at A and are allow to walk left, right, up or down along the grid. The grid continues forever in every direction. After you have walked thirteen units, how many different locations could you be in?

## 9 December

You start at A and are allowed to move either to the right or upwards.

How many different routes are there to get from A to B?

## 9 December

You start at A and are allowed to move either to the right or upwards.

How many different routes are there to get from A to B?