Advent calendar 2025

Archive

Show me a random puzzle

Tags

angles shapes cube numbers planes triangles dates algebra chocolate chess numbers determinants chalkdust crossnumber ellipses polynomials digital products combinatorics digits sequences volume decahedra digital clocks proportion addition products trigonometry fractions colouring prime numbers tangents probabilty multiplaction squares square roots multiples graphs even numbers odd numbers differentiation sport squares quadratics mean lines functions remainders powers spheres coordinates dominos cryptic clues advent grids doubling averages square numbers crossnumbers time consecutive integers dice pascal's triangle coins clocks xor taxicab geometry multiplication floors sets factors triangle numbers cubics balancing hexagons means arrows probability consecutive numbers expansions speed cards palindromes geometry geometric mean elections money routes crosswords shape ave calculus unit fractions symmetry sums neighbours number binary games area bases indices matrices irreducible numbers axes rectangles lists complex numbers medians geometric means tiling christmas 3d shapes people maths scales polygons square grids cryptic crossnumbers gerrymandering folding tube maps pentagons perimeter logic books 2d shapes menace tournaments parabolas star numbers dodecagons integers sum to infinity range quadrilaterals integration factorials the only crossnumber regular shapes median surds rugby prime factors wordplay division partitions albgebra circles perfect numbers percentages