# 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

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