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Comments in green were written by me. Comments in blue were not written by me.
2025-12-25
@
Aisha
: Hm, I used exactly the same method for both of these days. I'm not sure if it lends itself to a nice clean formula, but it might! I'll share my approach after the contest is over!
Seth Cohen
on
/blog/120
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Christmas (2025) is coming!
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The partridge puzzle
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TMiP 2025 puzzle hunt
Jun 2025
A nonogram alphabet
Mar 2025
How to write a crossnumber
Jan 2025
Christmas (2024) is over
Friendly squares
2024
Dec 2024
A regular expression Christmas puzzle
Christmas card 2024
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Feb 2024
Zines, pt. 2
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2023
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Christmas (2023) is coming!
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Logo Asteroids
Mar 2023
Mathsteroids on hyperbolic surfaces
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The databet
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Christmas (2022) is over
2022
▼ show ▼
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Dec 2022
Off-by-one errors
Christmas card 2022
Nov 2022
Christmas (2022) is coming!
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24 Hour Maths Game Show
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Approximating π
Feb 2022
Build your own MENACE
Jan 2022
Christmas (2021) is over
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Dec 2021
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Nov 2021
Christmas (2021) is coming!
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TMiP 2021 puzzle hunt
May 2021
Close encounters of the second kind
Jan 2021
Christmas (2020) is over
2020
▼ show ▼
▲ hide ▲
Dec 2020
Christmas card 2020
Nov 2020
Christmas (2020) is coming!
Jul 2020
Happy -62+e+gτ-√3 Approximation Day!
May 2020
A surprising fact about quadrilaterals
Interesting tautologies
Mar 2020
Log-scaled axes
Feb 2020
PhD thesis, chapter ∞
PhD thesis, chapter 5
PhD thesis, chapter 4
PhD thesis, chapter 3
Inverting a matrix
PhD thesis, chapter 2
Jan 2020
PhD thesis, chapter 1
Gaussian elimination
Matrix multiplication
Christmas (2019) is over
2019
▼ show ▼
▲ hide ▲
Dec 2019
Visualising MENACE's learning
Christmas card 2019
Nov 2019
Christmas (2019) is coming!
Sep 2019
A non-converging LaTeX document
TMiP 2019 treasure punt
Jul 2019
Big Internet Math-Off stickers 2019
Jun 2019
Proving a conjecture
Apr 2019
Harriss and other spirals
Mar 2019
realhats
Jan 2019
Christmas (2018) is over
2018
▼ show ▼
▲ hide ▲
Dec 2018
Christmas cross stitch
MENACE in fiction
Christmas card 2018
Nov 2018
Christmas (2018) is coming!
Sep 2018
Runge's Phenomenon
Jul 2018
World Cup stickers 2018, pt. 3
Mathsteroids
Jun 2018
World Cup stickers 2018, pt. 2
May 2018
A bad Puzzle for Today
Apr 2018
Building MENACEs for other games
Mar 2018
A 20,000-to-1 baby?
World Cup stickers 2018
Jan 2018
Origins of World War I
Christmas (2017) is over
2017
▼ show ▼
▲ hide ▲
Dec 2017
Christmas card 2017
Nov 2017
Christmas (2017) is coming!
MENACE at Manchester Science Festival
Jun 2017
Big Ben Strikes Again
Mar 2017
The end of coins of constant width
Dragon curves II
Feb 2017
The importance of estimation error
Jan 2017
Is MEDUSA the new BODMAS?
2016
▼ show ▼
▲ hide ▲
Dec 2016
Christmas (2016) is over
Video game surfaces
Christmas card 2016
Nov 2016
Christmas (2016) is coming!
Oct 2016
Logical contradictions
Palindromic dates
Sep 2016
Tube map kaleidocycles
Jul 2016
Solving the cross diagonal cover problem
Jun 2016
Braiding, pt. 2
Braiding, pt. 1
Making names in Life
May 2016
Euro 2016 stickers
Mar 2016
Proving Pythagoras' theorem
Dragon curves
The
Mathematical Games
of Martin Gardner
Jan 2016
Christmas (2015) is over
2015
▼ show ▼
▲ hide ▲
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
Mar 2015
Optimal Pac-Man
Tube map stellated rhombicuboctahedron
Logic bot, pt. 2
Design your own flexagon
Jan 2015
Tube map Platonic solids, pt. 3
2014
▼ show ▼
▲ hide ▲
Nov 2014
Logic bot
Sep 2014
Electromagnetic Field talk
Jun 2014
Tennis maths
May 2014
World Cup stickers
Apr 2014
Countdown probability, pt. 2
Countdown probability
Mar 2014
New machine unfriendly £1 coin, pt. 2
New machine unfriendly £1 coin
2013
▼ show ▼
▲ hide ▲
Dec 2013
Assorted christmaths
Pointless probability
Jul 2013
"Uncanny" royal coincidence
Raspberry Pi weather station
2012
▼ show ▼
▲ hide ▲
Nov 2012
Tube map Platonic solids, pt. 2
Oct 2012
Tube map Platonic solids
Tags
runge's phenomenon
golden ratio
speed
rugby
stickers
inline code
game of life
frobel
ucl
24 hour maths
zines
crossnumbers
turtles
tetris
preconditioning
curvature
draughts
countdown
numerical analysis
youtube
sobolev spaces
logo
game show probability
edinburgh
sorting
weather station
captain scarlet
databet
data
martin gardner
gerry anderson
news
bluesky
tennis
wordle
pac-man
golden spiral
simultaneous equations
dinosaurs
nine men's morris
matrices
asteroids
regular expressions
quadrilaterals
cambridge
manchester science festival
games
hannah fry
craft
rhombicuboctahedron
video games
polynomials
chebyshev
error bars
errors
mathsjam
pokémon wordle
crosswords
squares
friendly squares
approximation
books
advent calendar
javascript
warwick
sport
noughts and crosses
kings
thirteen
mean
matt parker
chalkdust magazine
determinants
gaussian elimination
harriss spiral
python
realhats
cross stitch
bots
correlation
latex
pi approximation day
binary
reuleaux polygons
gather town
pizza cutting
phd
football
graph theory
pokémon
standard deviation
bempp
sound
rust
matrix multiplication
stirling numbers
logs
finite group
flexagons
estimation
php
palindromes
fence posts
people maths
logic
dataset
fonts
go
the aperiodical
weak imposition
dates
folding tube maps
pythagoras
tmip
puzzles
misleading statistics
european cup
royal baby
oeis
crossnumber
boundary element methods
radio 4
bubble bobble
statistics
probability
big internet math-off
london
map projections
national lottery
numbers
ternary
alphabets
guest posts
talking maths in public
convergence
folding paper
signorini conditions
london underground
graphs
triangles
nonograms
hats
geometry
braiding
partridge puzzle
coins
christmas card
propositional calculus
hexapawn
menace
trigonometry
accuracy
machine learning
matrix of minors
finite element method
inverse matrices
anscombe's quartet
mathsteroids
live stream
reddit
computational complexity
exponential growth
matrix of cofactors
datasaurus dozen
newcastle
royal institution
fractals
crochet
a gamut of games
final fantasy
bodmas
coventry
arithmetic
chess
wave scattering
kenilworth
world cup
programming
mathslogicbot
electromagnetic field
recursion
raspberry pi
dragon curves
wool
pi
plastic ratio
manchester
light
christmas
hyperbolic surfaces
platonic solids
geogebra
interpolation
pascal's triangle
arrangement puzzles
data visualisation
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