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2022-12-25
A wonderful journey, as always. Thank you for setting these!
Jonathan Chaffer
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Archive
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How to write a crossnumber
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A regular expression Christmas puzzle
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Chalkdust issue 17
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Logo Asteroids
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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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May 2021
Close encounters of the second kind
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2020
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Dec 2020
Christmas card 2020
Nov 2020
Christmas (2020) is coming!
Jul 2020
Happy -10+e√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
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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
matrix multiplication
oeis
pi approximation day
crosswords
fonts
news
royal institution
dates
countdown
simultaneous equations
convergence
curvature
gerry anderson
electromagnetic field
pac-man
alphabets
mean
chalkdust magazine
final fantasy
quadrilaterals
boundary element methods
manchester
accuracy
dinosaurs
palindromes
php
reuleaux polygons
cross stitch
cambridge
golden ratio
datasaurus dozen
thirteen
numerical analysis
programming
wool
latex
fractals
probability
graphs
mathslogicbot
phd
bots
fence posts
tennis
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a gamut of games
chebyshev
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folding paper
speed
coventry
radio 4
hexapawn
errors
captain scarlet
talking maths in public
javascript
inverse matrices
matt parker
world cup
partridge puzzle
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data
christmas
map projections
books
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regular expressions
folding tube maps
plastic ratio
go
pi
chess
triangles
wordle
arithmetic
frobel
approximation
game of life
logo
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graph theory
the aperiodical
pizza cutting
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databet
platonic solids
royal baby
pokémon wordle
mathsjam
preconditioning
realhats
flexagons
finite group
error bars
advent calendar
guest posts
newcastle
rhombicuboctahedron
hats
games
squares
statistics
geometry
crochet
light
bubble bobble
correlation
inline code
matrices
exponential growth
kenilworth
youtube
matrix of cofactors
harriss spiral
python
weak imposition
draughts
weather station
dataset
crossnumbers
binary
numbers
data visualisation
tmip
warwick
logs
turtles
nonograms
sound
friendly squares
mathsteroids
computational complexity
christmas card
braiding
bempp
asteroids
standard deviation
rugby
determinants
finite element method
menace
pokémon
ucl
logic
polynomials
interpolation
matrix of minors
reddit
bluesky
manchester science festival
ternary
geogebra
sobolev spaces
puzzles
crossnumber
nine men's morris
game show probability
estimation
hannah fry
wave scattering
coins
london
golden spiral
recursion
raspberry pi
propositional calculus
24 hour maths
rust
big internet math-off
anscombe's quartet
live stream
runge's phenomenon
video games
football
pythagoras
signorini conditions
kings
sport
bodmas
misleading statistics
european cup
martin gardner
hyperbolic surfaces
tetris
noughts and crosses
gather town
national lottery
craft
pascal's triangle
people maths
london underground
zines
stickers
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 -10+e√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
weather station
speed
pascal's triangle
fence posts
kings
pythagoras
realhats
stickers
harriss spiral
error bars
logo
wool
preconditioning
hexapawn
curvature
mathsteroids
triangles
databet
programming
folding paper
bodmas
london underground
hyperbolic surfaces
mathslogicbot
final fantasy
errors
rust
recursion
braiding
news
wordle
standard deviation
golden spiral
statistics
video games
platonic solids
kenilworth
rugby
european cup
accuracy
manchester science festival
determinants
world cup
misleading statistics
warwick
reuleaux polygons
thirteen
python
live stream
ternary
game of life
coventry
crochet
numerical analysis
convergence
nine men's morris
rhombicuboctahedron
graph theory
crosswords
propositional calculus
raspberry pi
hats
regular expressions
royal baby
crossnumbers
bluesky
reddit
quadrilaterals
countdown
chalkdust magazine
draughts
bubble bobble
weak imposition
trigonometry
numbers
go
the aperiodical
graphs
data visualisation
estimation
frobel
machine learning
php
finite group
pokémon
fonts
wave scattering
24 hour maths
stirling numbers
bempp
binary
craft
plastic ratio
signorini conditions
pokémon wordle
zines
noughts and crosses
big internet math-off
gather town
crossnumber
turtles
cross stitch
pi approximation day
simultaneous equations
christmas card
game show probability
gaussian elimination
finite element method
radio 4
javascript
pi
ucl
arrangement puzzles
tennis
geogebra
golden ratio
talking maths in public
computational complexity
datasaurus dozen
matrix of minors
youtube
football
matt parker
palindromes
folding tube maps
mean
phd
coins
light
dates
tetris
correlation
logs
alphabets
runge's phenomenon
captain scarlet
chess
map projections
dataset
matrix multiplication
pac-man
people maths
electromagnetic field
bots
royal institution
games
asteroids
arithmetic
newcastle
menace
interpolation
approximation
partridge puzzle
flexagons
inverse matrices
data
latex
a gamut of games
sorting
sound
hannah fry
matrix of cofactors
manchester
fractals
oeis
chebyshev
anscombe's quartet
matrices
sobolev spaces
boundary element methods
exponential growth
mathsjam
polynomials
friendly squares
edinburgh
books
gerry anderson
london
guest posts
advent calendar
logic
pizza cutting
squares
puzzles
geometry
probability
nonograms
christmas
cambridge
dragon curves
sport
tmip
inline code
national lottery
martin gardner
dinosaurs
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on /blog/97