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Comments in green were written by me. Comments in blue were not written by me.
2024-11-12
In some of your full list you use the same format forwards and backwards. I'm just questioning why are YYMDD,DDMYY considered to be different formats when they are palendromic.
Stee
on
/blog/34
Archive
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A nonogram alphabet
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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
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Build your own MENACE
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Close encounters of the second kind
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Christmas (2020) is coming!
Jul 2020
Happy -62+e+gτ-√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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Visualising MENACE's learning
Christmas card 2019
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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
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2018
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Christmas cross stitch
MENACE in fiction
Christmas card 2018
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Christmas (2018) is coming!
Sep 2018
Runge's Phenomenon
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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
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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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Christmas card 2017
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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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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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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
Tags
mean
regular expressions
alphabets
pi
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games
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countdown
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world cup
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martin gardner
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national lottery
anscombe's quartet
pizza cutting
tmip
stickers
standard deviation
light
kings
puzzles
javascript
phd
machine learning
triangles
platonic solids
misleading statistics
wave scattering
numbers
curvature
zines
exponential growth
preconditioning
matrix of minors
estimation
php
partridge puzzle
tetris
hannah fry
signorini conditions
pythagoras
approximation
cross stitch
pascal's triangle
matrices
polynomials
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bodmas
advent calendar
graphs
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weak imposition
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harriss spiral
menace
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logo
propositional calculus
golden ratio
chebyshev
datasaurus dozen
news
video games
pokémon wordle
royal baby
bubble bobble
python
go
ternary
pac-man
christmas
edinburgh
chalkdust magazine
flexagons
a gamut of games
runge's phenomenon
statistics
graph theory
errors
binary
mathslogicbot
crossnumber
recursion
matrix multiplication
geometry
warwick
manchester science festival
tennis
weather station
matt parker
friendly squares
football
wordle
matrix of cofactors
the aperiodical
nonograms
hexapawn
crossnumbers
noughts and crosses
logs
turtles
simultaneous equations
youtube
gather town
pokémon
sorting
wool
logic
chess
frobel
geogebra
data visualisation
finite element method
inline code
rugby
thirteen
boundary element methods
dataset
accuracy
golden spiral
speed
determinants
guest posts
folding paper
gerry anderson
plastic ratio
crochet
books
ucl
sobolev spaces
databet
talking maths in public
pi approximation day
dragon curves
electromagnetic field
sport
captain scarlet
arithmetic
braiding
draughts
hats
bempp
interpolation
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correlation
dinosaurs
map projections
cambridge
european cup
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coins
kenilworth
manchester
folding tube maps
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 -62+e+gτ-√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
alphabets
final fantasy
world cup
javascript
errors
accuracy
datasaurus dozen
electromagnetic field
manchester
reddit
data visualisation
tennis
pi
mathsteroids
folding tube maps
coventry
weather station
mathslogicbot
games
speed
geometry
coins
logo
newcastle
bubble bobble
pascal's triangle
arithmetic
pac-man
draughts
palindromes
probability
manchester science festival
golden spiral
game of life
dragon curves
golden ratio
convergence
crossnumber
rust
matt parker
matrix of cofactors
zines
logs
trigonometry
exponential growth
sobolev spaces
estimation
recursion
light
nine men's morris
talking maths in public
pokémon
tetris
oeis
a gamut of games
partridge puzzle
triangles
pythagoras
gaussian elimination
go
kenilworth
flexagons
folding paper
live stream
advent calendar
hats
crochet
binary
platonic solids
logic
bempp
christmas card
big internet math-off
approximation
polynomials
puzzles
reuleaux polygons
php
dataset
youtube
hexapawn
football
misleading statistics
books
video games
wave scattering
squares
thirteen
simultaneous equations
matrix of minors
preconditioning
numbers
bluesky
graph theory
realhats
statistics
inline code
graphs
cross stitch
christmas
harriss spiral
curvature
regular expressions
dinosaurs
arrangement puzzles
pokémon wordle
phd
pi approximation day
wool
anscombe's quartet
countdown
asteroids
friendly squares
stickers
warwick
the aperiodical
pizza cutting
sport
24 hour maths
determinants
fonts
royal baby
interpolation
frobel
tmip
finite element method
error bars
radio 4
boundary element methods
ternary
european cup
matrix multiplication
chess
game show probability
cambridge
people maths
rhombicuboctahedron
menace
national lottery
matrices
gerry anderson
signorini conditions
royal institution
sound
chebyshev
turtles
stirling numbers
bodmas
latex
kings
propositional calculus
raspberry pi
gather town
map projections
computational complexity
geogebra
nonograms
bots
craft
captain scarlet
crossnumbers
london underground
standard deviation
wordle
correlation
programming
inverse matrices
runge's phenomenon
ucl
databet
python
hyperbolic surfaces
data
quadrilaterals
hannah fry
machine learning
chalkdust magazine
plastic ratio
sorting
fence posts
braiding
numerical analysis
london
weak imposition
martin gardner
edinburgh
guest posts
mean
rugby
fractals
noughts and crosses
dates
crosswords
mathsjam
news
finite group
© Matthew Scroggs 2012–2026
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