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Comments in green were written by me. Comments in blue were not written by me.
2022-12-25
My dad and I did several of these puzzles together. I am 8 years old, and I figured many of them out. Thank you!
Xena
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Mixing Wordle with other games
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2025
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Aug 2025
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A nonogram alphabet
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How to write a crossnumber
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Friendly squares
2024
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A regular expression Christmas puzzle
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Chalkdust issue 17
Apr 2023
Logo Asteroids
Mar 2023
Mathsteroids on hyperbolic surfaces
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The databet
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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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Christmas (2021) is over
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Nov 2021
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TMiP 2021 puzzle hunt
May 2021
Close encounters of the second kind
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Christmas (2020) is over
2020
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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
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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
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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
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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
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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
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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
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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
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Dec 2013
Assorted christmaths
Pointless probability
Jul 2013
"Uncanny" royal coincidence
Raspberry Pi weather station
2012
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Nov 2012
Tube map Platonic solids, pt. 2
Oct 2012
Tube map Platonic solids
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pokémon wordle
programming
game of life
martin gardner
arithmetic
databet
asteroids
mathslogicbot
youtube
palindromes
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gaussian elimination
bodmas
chess
cross stitch
numerical analysis
statistics
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python
menace
christmas card
correlation
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golden spiral
rhombicuboctahedron
craft
mean
folding paper
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squares
24 hour maths
fonts
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radio 4
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draughts
friendly squares
accuracy
datasaurus dozen
matrix of cofactors
royal institution
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turtles
frobel
books
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misleading statistics
alphabets
manchester science festival
newcastle
flexagons
graphs
platonic solids
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people maths
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rust
stirling numbers
fence posts
sport
partridge puzzle
dragon curves
wave scattering
world cup
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hats
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recursion
errors
probability
estimation
crochet
edinburgh
kenilworth
logo
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reuleaux polygons
crossnumber
oeis
wool
finite element method
sorting
error bars
wordle
talking maths in public
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go
live stream
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chebyshev
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light
guest posts
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bempp
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raspberry pi
final fantasy
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matrices
pi approximation day
harriss spiral
news
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tmip
regular expressions
approximation
speed
puzzles
interpolation
reddit
plastic ratio
coventry
video games
logic
football
crossnumbers
arrangement puzzles
map projections
determinants
dataset
tennis
php
kings
runge's phenomenon
boundary element methods
quadrilaterals
captain scarlet
games
chalkdust magazine
simultaneous equations
braiding
weather station
pythagoras
anscombe's quartet
geogebra
polynomials
inverse matrices
matt parker
preconditioning
advent calendar
coins
royal baby
pac-man
mathsjam
pokémon
london
sobolev spaces
gerry anderson
bubble bobble
game show probability
pascal's triangle
big internet math-off
pizza cutting
finite group
weak imposition
propositional calculus
pi
warwick
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tetris
a gamut of games
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ucl
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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 -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
draughts
propositional calculus
stirling numbers
light
machine learning
arrangement puzzles
weather station
map projections
recursion
golden spiral
european cup
sobolev spaces
hexapawn
bots
martin gardner
nine men's morris
standard deviation
craft
gather town
stickers
puzzles
latex
speed
talking maths in public
python
logic
folding tube maps
bluesky
alphabets
exponential growth
game show probability
manchester
sorting
live stream
fence posts
chess
programming
logs
misleading statistics
sound
rhombicuboctahedron
captain scarlet
matrices
preconditioning
nonograms
runge's phenomenon
palindromes
game of life
pac-man
flexagons
boundary element methods
advent calendar
royal institution
oeis
final fantasy
warwick
squares
youtube
binary
phd
plastic ratio
mathsjam
edinburgh
pi approximation day
dragon curves
matrix of cofactors
regular expressions
london
reddit
geometry
php
bempp
mathslogicbot
crossnumbers
folding paper
geogebra
london underground
partridge puzzle
signorini conditions
pascal's triangle
matrix multiplication
tmip
crochet
countdown
reuleaux polygons
dinosaurs
guest posts
graph theory
datasaurus dozen
pokémon wordle
hyperbolic surfaces
realhats
kings
data visualisation
radio 4
crosswords
trigonometry
weak imposition
pi
sport
the aperiodical
errors
golden ratio
hannah fry
numerical analysis
probability
newcastle
football
fractals
simultaneous equations
databet
error bars
pizza cutting
interpolation
matt parker
news
numbers
frobel
turtles
pythagoras
polynomials
ucl
gerry anderson
24 hour maths
arithmetic
gaussian elimination
hats
statistics
kenilworth
finite group
wave scattering
anscombe's quartet
logo
finite element method
cambridge
graphs
thirteen
ternary
estimation
video games
crossnumber
zines
cross stitch
rugby
determinants
christmas
pokémon
coins
manchester science festival
electromagnetic field
convergence
books
a gamut of games
chebyshev
harriss spiral
christmas card
correlation
computational complexity
go
bodmas
javascript
chalkdust magazine
accuracy
coventry
inverse matrices
tetris
raspberry pi
wordle
world cup
quadrilaterals
platonic solids
approximation
dates
menace
friendly squares
fonts
curvature
mathsteroids
matrix of minors
noughts and crosses
dataset
games
royal baby
tennis
asteroids
people maths
braiding
mean
national lottery
triangles
rust
big internet math-off
inline code
wool
data
bubble bobble
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