Advent calendar 2025

Archive

Show me a random puzzle

Tags

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