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2022-12-25
Another great set of puzzles! Thank you Matthew.
Don
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Archive
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2026
May 2026
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A new puzzle every day
Mixing Wordle with other games
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2025
Dec 2025
Christmas card 2025
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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
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A regular expression Christmas puzzle
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Zines, pt. 2
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Sep 2023
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May 2023
Chalkdust issue 17
Apr 2023
Logo Asteroids
Mar 2023
Mathsteroids on hyperbolic surfaces
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The databet
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Christmas (2022) is over
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Off-by-one errors
Christmas card 2022
Nov 2022
Christmas (2022) is coming!
Oct 2022
24 Hour Maths Game Show
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Approximating π
Feb 2022
Build your own MENACE
Jan 2022
Christmas (2021) is over
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Christmas card 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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▲ hide ▲
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
Tags
books
chalkdust magazine
cross stitch
convergence
stickers
24 hour maths
crossnumbers
tennis
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hyperbolic surfaces
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newcastle
dragon curves
hexapawn
crochet
exponential growth
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christmas
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boundary element methods
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partridge puzzle
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cambridge
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folding paper
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big internet math-off
manchester science festival
misleading statistics
nine men's morris
radio 4
light
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probability
mean
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hats
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wool
kings
reddit
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arithmetic
pi approximation day
polynomials
interpolation
wordle
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final fantasy
bodmas
dates
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anscombe's quartet
fractals
people maths
royal institution
puzzles
thirteen
news
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simultaneous equations
martin gardner
noughts and crosses
coins
wave scattering
folding tube maps
reuleaux polygons
pascal's triangle
hannah fry
recursion
gather town
weather station
draughts
the aperiodical
nonograms
graph theory
python
approximation
mathsteroids
estimation
inverse matrices
braiding
raspberry pi
map projections
squares
finite element method
regular expressions
gaussian elimination
sorting
sound
friendly squares
errors
talking maths in public
logs
speed
latex
tetris
football
frobel
javascript
ucl
royal baby
fonts
menace
machine learning
palindromes
databet
national lottery
geogebra
coventry
graphs
platonic solids
tmip
london underground
matrix of cofactors
numbers
pokémon wordle
craft
inline code
rhombicuboctahedron
electromagnetic field
world cup
harriss spiral
ternary
geometry
signorini conditions
countdown
php
gerry anderson
logo
captain scarlet
bluesky
standard deviation
phd
zines
warwick
crosswords
weak imposition
sport
preconditioning
matrix multiplication
go
curvature
manchester
advent calendar
chebyshev
bots
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games
game of life
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golden spiral
accuracy
stirling numbers
plastic ratio
finite group
bubble bobble
datasaurus dozen
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Archive
Show me a random blog post
▼ show ▼
▲ hide ▲
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
runge's phenomenon
graph theory
squares
python
determinants
radio 4
the aperiodical
folding tube maps
talking maths in public
european cup
signorini conditions
news
pi
boundary element methods
datasaurus dozen
hyperbolic surfaces
preconditioning
bempp
christmas
geometry
mean
coins
live stream
weather station
arithmetic
curvature
anscombe's quartet
game of life
friendly squares
weak imposition
24 hour maths
plastic ratio
rhombicuboctahedron
hannah fry
manchester science festival
nine men's morris
geogebra
cambridge
bubble bobble
rust
draughts
wordle
football
matt parker
accuracy
bluesky
palindromes
london
estimation
wool
hats
craft
edinburgh
misleading statistics
mathsteroids
manchester
data
statistics
coventry
pi approximation day
mathsjam
crossnumber
braiding
latex
national lottery
christmas card
pythagoras
numbers
databet
chalkdust magazine
matrices
youtube
martin gardner
exponential growth
reuleaux polygons
guest posts
bots
dragon curves
asteroids
folding paper
regular expressions
probability
gather town
cross stitch
zines
thirteen
frobel
a gamut of games
ternary
simultaneous equations
alphabets
harriss spiral
sport
video games
crosswords
php
dinosaurs
gaussian elimination
matrix multiplication
newcastle
flexagons
countdown
graphs
logo
pascal's triangle
london underground
convergence
computational complexity
map projections
matrix of minors
polynomials
kenilworth
stickers
reddit
advent calendar
pizza cutting
fonts
triangles
error bars
raspberry pi
turtles
programming
trigonometry
interpolation
pokémon
finite element method
quadrilaterals
javascript
logic
stirling numbers
ucl
arrangement puzzles
sorting
big internet math-off
chebyshev
noughts and crosses
books
electromagnetic field
games
crochet
speed
final fantasy
logs
correlation
world cup
kings
hexapawn
go
wave scattering
sound
propositional calculus
fractals
crossnumbers
golden ratio
rugby
golden spiral
warwick
matrix of cofactors
pokémon wordle
sobolev spaces
oeis
bodmas
mathslogicbot
light
finite group
royal baby
fence posts
tetris
tennis
nonograms
machine learning
people maths
binary
standard deviation
captain scarlet
chess
numerical analysis
puzzles
inverse matrices
phd
partridge puzzle
dates
royal institution
platonic solids
inline code
gerry anderson
realhats
tmip
data visualisation
errors
dataset
menace
game show probability
approximation
pac-man
recursion
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