# 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

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

puzzles about multiplication, or a random puzzle.

puzzles about multiplication, or a random puzzle.