# 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

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