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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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A nonogram alphabet
Mar 2025
How to write a crossnumber
Jan 2025
Christmas (2024) is over
Friendly squares
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A regular expression Christmas puzzle
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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
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24 Hour Maths Game Show
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Approximating π
Feb 2022
Build your own MENACE
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Dec 2021
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Christmas (2021) is coming!
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TMiP 2021 puzzle hunt
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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 -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
interpolation
coventry
asteroids
golden ratio
matrix multiplication
nonograms
world cup
coins
friendly squares
fonts
geogebra
game of life
trigonometry
machine learning
pi
bots
fence posts
gerry anderson
regular expressions
alphabets
error bars
latex
big internet math-off
misleading statistics
rust
accuracy
finite element method
bempp
propositional calculus
manchester science festival
standard deviation
tennis
chalkdust magazine
pi approximation day
a gamut of games
light
london underground
matrices
chebyshev
reddit
graphs
data
gather town
golden spiral
boundary element methods
mathslogicbot
the aperiodical
football
matrix of minors
sorting
newcastle
geometry
royal institution
plastic ratio
matrix of cofactors
sport
go
numbers
braiding
national lottery
cross stitch
wool
turtles
logic
manchester
phd
crosswords
palindromes
mathsjam
noughts and crosses
crochet
finite group
guest posts
matt parker
kenilworth
binary
correlation
warwick
quadrilaterals
advent calendar
speed
errors
arithmetic
fractals
preconditioning
inverse matrices
kings
youtube
nine men's morris
christmas card
bluesky
folding tube maps
python
rugby
final fantasy
pizza cutting
programming
game show probability
flexagons
polynomials
databet
martin gardner
inline code
anscombe's quartet
books
news
dinosaurs
approximation
hats
computational complexity
european cup
wordle
draughts
harriss spiral
radio 4
probability
bubble bobble
games
pac-man
hyperbolic surfaces
triangles
pokémon
frobel
raspberry pi
zines
datasaurus dozen
folding paper
chess
talking maths in public
london
thirteen
crossnumbers
map projections
arrangement puzzles
rhombicuboctahedron
crossnumber
simultaneous equations
hexapawn
ucl
platonic solids
data visualisation
logo
gaussian elimination
sobolev spaces
cambridge
dragon curves
ternary
hannah fry
mean
graph theory
pythagoras
squares
edinburgh
realhats
stirling numbers
people maths
oeis
sound
menace
recursion
runge's phenomenon
determinants
countdown
numerical analysis
exponential growth
craft
pokémon wordle
live stream
php
puzzles
tmip
estimation
weak imposition
logs
convergence
mathsteroids
weather station
statistics
tetris
dates
electromagnetic field
christmas
reuleaux polygons
24 hour maths
partridge puzzle
bodmas
dataset
signorini conditions
video games
stickers
pascal's triangle
curvature
royal baby
captain scarlet
javascript
wave scattering
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