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Comments in green were written by me. Comments in blue were not written by me.
2025-12-24
@
Chad
: What was your wrong answer for #15? I had that one wrong too at first, and it took a kind of sneaky "Oh of course!" insight for me to figure it out.
Seth Cohen
on
/blog/120
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Christmas (2025) is coming!
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TMiP 2025 puzzle hunt
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A nonogram alphabet
Mar 2025
How to write a crossnumber
Jan 2025
Christmas (2024) is over
Friendly squares
2024
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A regular expression Christmas puzzle
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Christmas (2024) is coming!
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Zines, pt. 2
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Logo Asteroids
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Mathsteroids on hyperbolic surfaces
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The databet
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▼ 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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Christmas (2021) is coming!
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Close encounters of the second kind
Jan 2021
Christmas (2020) is over
2020
▼ show ▼
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Dec 2020
Christmas card 2020
Nov 2020
Christmas (2020) is coming!
Jul 2020
Happy -6+τφ 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
pi
dragon curves
gerry anderson
bubble bobble
chess
tetris
countdown
phd
radio 4
statistics
ternary
numbers
finite group
puzzles
standard deviation
hexapawn
logic
approximation
stirling numbers
game of life
cambridge
finite element method
data visualisation
fractals
raspberry pi
partridge puzzle
24 hour maths
trigonometry
convergence
signorini conditions
php
crosswords
recursion
christmas card
nonograms
interpolation
national lottery
video games
programming
a gamut of games
talking maths in public
london underground
coventry
fence posts
flexagons
triangles
pizza cutting
draughts
machine learning
games
hyperbolic surfaces
propositional calculus
tennis
braiding
matrix of minors
turtles
data
ucl
runge's phenomenon
latex
electromagnetic field
gather town
sobolev spaces
numerical analysis
pascal's triangle
plastic ratio
noughts and crosses
football
palindromes
frobel
polynomials
edinburgh
speed
wave scattering
logo
advent calendar
datasaurus dozen
folding tube maps
bluesky
crossnumbers
mathslogicbot
reddit
london
computational complexity
map projections
zines
royal institution
inverse matrices
christmas
matrix of cofactors
geometry
asteroids
bempp
curvature
correlation
errors
craft
determinants
weather station
sorting
harriss spiral
pokémon wordle
geogebra
reuleaux polygons
world cup
pythagoras
live stream
cross stitch
crossnumber
game show probability
menace
final fantasy
gaussian elimination
probability
binary
weak imposition
platonic solids
golden ratio
warwick
bots
folding paper
kings
rugby
quadrilaterals
hats
go
royal baby
dates
graph theory
guest posts
youtube
fonts
sound
accuracy
graphs
arrangement puzzles
tmip
rhombicuboctahedron
boundary element methods
golden spiral
dataset
captain scarlet
matt parker
inline code
newcastle
mathsteroids
light
arithmetic
kenilworth
estimation
alphabets
preconditioning
big internet math-off
chebyshev
matrix multiplication
anscombe's quartet
dinosaurs
oeis
wordle
martin gardner
misleading statistics
logs
wool
manchester
javascript
realhats
squares
exponential growth
news
bodmas
databet
mean
books
pi approximation day
manchester science festival
python
regular expressions
nine men's morris
the aperiodical
coins
people maths
rust
chalkdust magazine
matrices
error bars
pac-man
friendly squares
mathsjam
pokémon
simultaneous equations
sport
crochet
hannah fry
stickers
thirteen
european cup
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