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2023-12-09
The clue for today's puzzle just made everything make way more sense.
Seth Cohen
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/blog/107
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Archive
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2026
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Feb 2026
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Christmas (2025) is coming!
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Aug 2025
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
Nov 2024
Christmas (2024) is coming!
Feb 2024
Zines, pt. 2
Jan 2024
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2023
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Dec 2023
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Chalkdust issue 17
Apr 2023
Logo Asteroids
Mar 2023
Mathsteroids on hyperbolic surfaces
Feb 2023
The databet
Jan 2023
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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
2021
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Dec 2021
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Nov 2021
Christmas (2021) is coming!
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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 -5+5φ+√2 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
thirteen
propositional calculus
mathslogicbot
determinants
fractals
chess
php
christmas
boundary element methods
probability
pi approximation day
bubble bobble
light
kings
geometry
gaussian elimination
menace
electromagnetic field
numbers
captain scarlet
hyperbolic surfaces
hannah fry
programming
logic
misleading statistics
people maths
wordle
accuracy
alphabets
bempp
fence posts
inverse matrices
estimation
news
speed
dataset
books
matrix of cofactors
squares
cross stitch
convergence
game of life
manchester
bluesky
trigonometry
european cup
final fantasy
royal institution
crosswords
rust
graphs
binary
stirling numbers
noughts and crosses
chalkdust magazine
realhats
sport
bots
tennis
draughts
approximation
inline code
nonograms
correlation
recursion
braiding
chebyshev
databet
mathsjam
martin gardner
reddit
gather town
folding paper
polynomials
signorini conditions
data visualisation
frobel
sorting
christmas card
runge's phenomenon
youtube
latex
crochet
advent calendar
triangles
python
kenilworth
datasaurus dozen
mean
reuleaux polygons
exponential growth
hats
puzzles
platonic solids
london underground
matrices
sound
error bars
errors
video games
games
statistics
friendly squares
pizza cutting
matrix multiplication
finite group
live stream
guest posts
graph theory
a gamut of games
rugby
national lottery
phd
hexapawn
go
talking maths in public
data
arrangement puzzles
wool
preconditioning
coventry
palindromes
logs
partridge puzzle
folding tube maps
tmip
countdown
matt parker
newcastle
manchester science festival
dates
crossnumber
pythagoras
javascript
edinburgh
wave scattering
arithmetic
quadrilaterals
finite element method
rhombicuboctahedron
craft
map projections
curvature
pokémon
ucl
matrix of minors
stickers
mathsteroids
plastic ratio
zines
dinosaurs
ternary
golden ratio
cambridge
anscombe's quartet
gerry anderson
pi
harriss spiral
big internet math-off
bodmas
fonts
24 hour maths
tetris
royal baby
weather station
standard deviation
sobolev spaces
numerical analysis
turtles
computational complexity
raspberry pi
flexagons
world cup
pokémon wordle
weak imposition
machine learning
golden spiral
oeis
football
geogebra
interpolation
asteroids
pac-man
regular expressions
dragon curves
warwick
radio 4
crossnumbers
game show probability
the aperiodical
coins
pascal's triangle
london
simultaneous equations
logo
nine men's morris
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