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Comments in green were written by me. Comments in blue were not written by me.
2023-12-27
Really enjoyed this years puzzles, Matt! 12 and 14 were favorites as well as the logic "meta-puzzle".
Don
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PhD thesis, chapter ∞
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Proving a conjecture
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A bad Puzzle for Today
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Braiding, pt. 2
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Optimal Pac-Man
Tube map stellated rhombicuboctahedron
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Logic bot
Sep 2014
Electromagnetic Field talk
Jun 2014
Tennis maths
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World Cup stickers
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Countdown probability, pt. 2
Countdown probability
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New machine unfriendly £1 coin, pt. 2
New machine unfriendly £1 coin
2013
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Assorted christmaths
Pointless probability
Jul 2013
"Uncanny" royal coincidence
Raspberry Pi weather station
2012
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Tube map Platonic solids, pt. 2
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Tube map Platonic solids
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Archive
Show me a random blog post
▼ show ▼
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2026
May 2026
World Cup stickers 2026
Apr 2026
A new puzzle every day
Mixing Wordle with other games
Feb 2026
Christmas (2025) is over
2025
Dec 2025
Christmas card 2025
Nov 2025
Christmas (2025) is coming!
Sep 2025
The partridge puzzle
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
Christmas (2023) is over
2023
▼ show ▼
▲ hide ▲
Dec 2023
Christmas card 2023
Nov 2023
Christmas (2023) is coming!
Zines
Sep 2023
TMiP 2023 puzzle hunt
May 2023
Chalkdust issue 17
Apr 2023
Logo Asteroids
Mar 2023
Mathsteroids on hyperbolic surfaces
Feb 2023
The databet
Jan 2023
Christmas (2022) is over
2022
▼ show ▼
▲ hide ▲
Dec 2022
Off-by-one errors
Christmas card 2022
Nov 2022
Christmas (2022) is coming!
Oct 2022
24 Hour Maths Game Show
Mar 2022
Approximating π
Feb 2022
Build your own MENACE
Jan 2022
Christmas (2021) is over
2021
▼ show ▼
▲ hide ▲
Dec 2021
Christmas card 2021
Nov 2021
Christmas (2021) is coming!
Sep 2021
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 -4-φ-√2+5√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
kenilworth
hats
mathsteroids
wool
mathsjam
triangles
newcastle
captain scarlet
football
recursion
wave scattering
game show probability
european cup
javascript
sobolev spaces
logs
programming
matrix multiplication
realhats
coins
alphabets
national lottery
fence posts
geogebra
bots
go
24 hour maths
reuleaux polygons
accuracy
determinants
anscombe's quartet
manchester
flexagons
wordle
simultaneous equations
preconditioning
friendly squares
dragon curves
light
mathslogicbot
finite element method
game of life
crossnumber
gather town
nonograms
zines
electromagnetic field
craft
christmas
weather station
crochet
noughts and crosses
reddit
regular expressions
chess
thirteen
tmip
gerry anderson
puzzles
map projections
nine men's morris
databet
talking maths in public
sorting
pac-man
coventry
stirling numbers
inline code
fractals
books
graphs
pokémon
bodmas
chalkdust magazine
quadrilaterals
runge's phenomenon
bempp
games
tennis
oeis
big internet math-off
signorini conditions
edinburgh
cross stitch
pizza cutting
braiding
people maths
golden spiral
convergence
datasaurus dozen
cambridge
dinosaurs
php
video games
rugby
probability
approximation
platonic solids
dataset
trigonometry
asteroids
interpolation
youtube
live stream
crossnumbers
latex
logic
propositional calculus
matrix of minors
pokémon wordle
raspberry pi
kings
frobel
phd
london
statistics
crosswords
manchester science festival
sound
misleading statistics
data
royal institution
speed
exponential growth
machine learning
radio 4
ternary
matt parker
finite group
news
correlation
london underground
estimation
dates
numerical analysis
chebyshev
golden ratio
plastic ratio
turtles
bluesky
data visualisation
folding tube maps
sport
weak imposition
warwick
error bars
python
geometry
advent calendar
rust
curvature
logo
graph theory
binary
world cup
royal baby
matrix of cofactors
stickers
arithmetic
arrangement puzzles
guest posts
polynomials
the aperiodical
partridge puzzle
errors
christmas card
menace
martin gardner
boundary element methods
matrices
a gamut of games
bubble bobble
rhombicuboctahedron
folding paper
harriss spiral
final fantasy
pascal's triangle
fonts
gaussian elimination
draughts
numbers
tetris
hexapawn
ucl
computational complexity
hannah fry
palindromes
pythagoras
standard deviation
mean
pi
hyperbolic surfaces
squares
countdown
pi approximation day
inverse matrices
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