# 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

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