# Puzzles

## Archive

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

#### Sunday Afternoon Maths LXVII

Coloured weightsNot Roman numerals

#### Advent calendar 2018

#### Sunday Afternoon Maths LXVI

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

Cryptic crossnumber #1Breaking Chocolate

Square and cube endings

List of all puzzles

## Tags

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