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Archive
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Most recent collections
Advent calendar 2023
Advent calendar 2022
Advent calendar 2021
Advent calendar 2020
List of all puzzles
Tags
sets
shape
proportion
advent
sums
integers
odd numbers
doubling
polygons
albgebra
irreducible numbers
factorials
cryptic clues
triangles
sum to infinity
logic
elections
averages
crossnumber
dates
perimeter
folding tube maps
digital clocks
triangle numbers
median
area
bases
expansions
binary
combinatorics
algebra
chalkdust crossnumber
2d shapes
complex numbers
speed
multiplication
decahedra
integration
routes
pentagons
multiples
symmetry
square roots
time
circles
polynomials
scales
number
numbers
differentiation
sequences
probability
factors
range
mean
unit fractions
products
hexagons
probabilty
gerrymandering
graphs
chocolate
the only crossnumber
addition
games
chess
digital products
cubics
division
wordplay
money
ellipses
geometric mean
percentages
people maths
squares
cryptic crossnumbers
rugby
cards
volume
perfect numbers
spheres
consecutive numbers
tournaments
matrices
even numbers
taxicab geometry
parabolas
consecutive integers
crosswords
tangents
remainders
axes
means
rectangles
dice
dominos
regular shapes
star numbers
colouring
clocks
geometric means
coordinates
prime numbers
3d shapes
fractions
shapes
ave
partitions
calculus
crossnumbers
lines
pascal's triangle
square numbers
floors
geometry
balancing
coins
functions
digits
indices
cube numbers
menace
christmas
sport
angles
quadratics
tiling
trigonometry
quadrilaterals
surds
palindromes
arrows
books
determinants
planes
dodecagons
grids
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