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Comments in green were written by me. Comments in blue were not written by me.
2025-12-17
Many thanks for your puzzle again this year - I suspect I have run into a similar contradiction to Bob. It may be an interpretation issue. When you say that the answer is not a factor, do you mean any factor or one particular factor?
Larry
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PhD thesis, chapter ∞
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Christmas (2017) is over
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The importance of estimation error
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Is MEDUSA the new BODMAS?
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Christmas (2016) is coming!
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Palindromic dates
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Tube map kaleidocycles
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Solving the cross diagonal cover problem
Jun 2016
Braiding, pt. 2
Braiding, pt. 1
Making names in Life
May 2016
Euro 2016 stickers
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Proving Pythagoras' theorem
Dragon curves
The
Mathematical Games
of Martin Gardner
Jan 2016
Christmas (2015) is over
2015
▼ show ▼
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Nov 2015
Christmas (2015) is coming!
Oct 2015
How to kick a conversion
How much will I win on the new National Lottery?
Aug 2015
How OEISbot works
MENACE
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Optimal Pac-Man
Tube map stellated rhombicuboctahedron
Logic bot, pt. 2
Design your own flexagon
Jan 2015
Tube map Platonic solids, pt. 3
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Electromagnetic Field talk
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Tennis maths
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Countdown probability, pt. 2
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New machine unfriendly £1 coin, pt. 2
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2013
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Assorted christmaths
Pointless probability
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"Uncanny" royal coincidence
Raspberry Pi weather station
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Tube map Platonic solids, pt. 2
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Tube map Platonic solids
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platonic solids
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logs
matrix of cofactors
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mean
national lottery
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crossnumber
warwick
games
arrangement puzzles
dates
chess
newcastle
tetris
christmas
sorting
speed
trigonometry
squares
craft
folding paper
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hats
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wordle
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folding tube maps
binary
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wool
approximation
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data
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rhombicuboctahedron
weak imposition
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fence posts
machine learning
ucl
matt parker
reddit
news
big internet math-off
correlation
royal baby
golden spiral
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manchester
accuracy
final fantasy
errors
gaussian elimination
pi approximation day
football
graphs
kenilworth
friendly squares
pokémon wordle
crochet
electromagnetic field
statistics
frobel
computational complexity
bluesky
rust
alphabets
python
oeis
martin gardner
php
manchester science festival
palindromes
polynomials
gerry anderson
sobolev spaces
books
mathsjam
wave scattering
people maths
pascal's triangle
bots
chalkdust magazine
guest posts
pythagoras
phd
standard deviation
golden ratio
coventry
the aperiodical
mathslogicbot
determinants
talking maths in public
curvature
radio 4
partridge puzzle
inline code
pizza cutting
edinburgh
logo
estimation
game show probability
world cup
mathsteroids
a gamut of games
map projections
kings
triangles
datasaurus dozen
probability
london underground
menace
ternary
fractals
bempp
signorini conditions
coins
turtles
databet
matrix of minors
javascript
raspberry pi
matrices
convergence
runge's phenomenon
captain scarlet
error bars
interpolation
hexapawn
puzzles
pokémon
european cup
fonts
misleading statistics
dinosaurs
game of life
go
chebyshev
plastic ratio
youtube
preconditioning
dataset
inverse matrices
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programming
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numbers
bubble bobble
quadrilaterals
noughts and crosses
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