# 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

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

puzzles about 2d shapes, or a random puzzle.

puzzles about 2d shapes, or a random puzzle.