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Comments in green were written by me. Comments in blue were not written by me.
2024-12-25
Thank you again for such an enjoyable set of puzzles. I think #6 was my favorite.
Don
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Happy -20+3τ+√2√3 Approximation Day!
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A surprising fact about quadrilaterals
Interesting tautologies
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Log-scaled axes
Feb 2020
PhD thesis, chapter ∞
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PhD thesis, chapter 4
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Inverting a matrix
PhD thesis, chapter 2
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PhD thesis, chapter 1
Gaussian elimination
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Visualising MENACE's learning
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A non-converging LaTeX document
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Big Internet Math-Off stickers 2019
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Proving a conjecture
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Harriss and other spirals
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realhats
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Christmas cross stitch
MENACE in fiction
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Runge's Phenomenon
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World Cup stickers 2018, pt. 3
Mathsteroids
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World Cup stickers 2018, pt. 2
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A bad Puzzle for Today
Apr 2018
Building MENACEs for other games
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A 20,000-to-1 baby?
World Cup stickers 2018
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Origins of World War I
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MENACE at Manchester Science Festival
Jun 2017
Big Ben Strikes Again
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The end of coins of constant width
Dragon curves II
Feb 2017
The importance of estimation error
Jan 2017
Is MEDUSA the new BODMAS?
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Logical contradictions
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Tube map kaleidocycles
Jul 2016
Solving the cross diagonal cover problem
Jun 2016
Braiding, pt. 2
Braiding, pt. 1
Making names in Life
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Euro 2016 stickers
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Proving Pythagoras' theorem
Dragon curves
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How to kick a conversion
How much will I win on the new National Lottery?
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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
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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
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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
Oct 2012
Tube map Platonic solids
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Archive
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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 ▼
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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 -20+3τ+√2√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
guest posts
exponential growth
propositional calculus
regular expressions
puzzles
fonts
matt parker
geometry
european cup
frobel
quadrilaterals
talking maths in public
squares
reddit
error bars
weak imposition
sorting
wordle
alphabets
geogebra
zines
live stream
polynomials
trigonometry
stickers
gaussian elimination
bempp
probability
martin gardner
ucl
youtube
curvature
mathsjam
countdown
pi
rust
logic
estimation
databet
matrices
crossnumbers
pythagoras
javascript
graph theory
palindromes
pizza cutting
braiding
anscombe's quartet
logo
national lottery
simultaneous equations
asteroids
radio 4
accuracy
thirteen
sobolev spaces
recursion
draughts
dinosaurs
stirling numbers
plastic ratio
bots
cambridge
crossnumber
football
newcastle
the aperiodical
manchester
tmip
pac-man
matrix of minors
computational complexity
arithmetic
chess
christmas
binary
folding tube maps
fence posts
boundary element methods
hexapawn
bodmas
books
triangles
chalkdust magazine
statistics
misleading statistics
pascal's triangle
speed
bubble bobble
rugby
signorini conditions
bluesky
craft
sound
finite element method
mathsteroids
flexagons
london underground
standard deviation
manchester science festival
royal baby
pokémon
hyperbolic surfaces
christmas card
programming
datasaurus dozen
game show probability
a gamut of games
approximation
warwick
raspberry pi
tennis
dragon curves
cross stitch
folding paper
captain scarlet
partridge puzzle
machine learning
chebyshev
data visualisation
turtles
hats
royal institution
coventry
pi approximation day
crosswords
mean
logs
correlation
games
gather town
edinburgh
arrangement puzzles
preconditioning
menace
coins
numerical analysis
harriss spiral
mathslogicbot
map projections
ternary
errors
data
24 hour maths
friendly squares
golden spiral
reuleaux polygons
light
php
wool
news
finite group
realhats
phd
determinants
pokémon wordle
golden ratio
big internet math-off
kenilworth
video games
numbers
latex
platonic solids
weather station
graphs
people maths
kings
hannah fry
london
runge's phenomenon
nine men's morris
nonograms
sport
matrix multiplication
matrix of cofactors
tetris
crochet
advent calendar
go
fractals
rhombicuboctahedron
game of life
inverse matrices
world cup
interpolation
final fantasy
gerry anderson
noughts and crosses
dataset
dates
convergence
electromagnetic field
wave scattering
oeis
inline code
python
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