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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
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/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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2020
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Christmas card 2020
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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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Visualising MENACE's learning
Christmas card 2019
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Christmas (2019) is coming!
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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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Christmas (2018) is over
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
Mar 2018
A 20,000-to-1 baby?
World Cup stickers 2018
Jan 2018
Origins of World War I
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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
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Christmas (2016) is coming!
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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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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
squares
map projections
wave scattering
latex
misleading statistics
statistics
programming
rugby
phd
crosswords
sound
youtube
matrix of cofactors
weather station
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simultaneous equations
runge's phenomenon
dragon curves
matrix multiplication
php
golden ratio
kenilworth
games
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cambridge
anscombe's quartet
probability
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wordle
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platonic solids
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partridge puzzle
arrangement puzzles
chess
london
geogebra
video games
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braiding
speed
hannah fry
ternary
matrix of minors
tetris
palindromes
binary
tennis
talking maths in public
recursion
kings
databet
news
nine men's morris
edinburgh
noughts and crosses
inverse matrices
warwick
sport
rhombicuboctahedron
stickers
reddit
asteroids
logs
turtles
royal baby
cross stitch
football
advent calendar
pac-man
the aperiodical
graphs
mathslogicbot
folding tube maps
inline code
chebyshev
matrices
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newcastle
gather town
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python
golden spiral
alphabets
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manchester
mathsteroids
harriss spiral
flexagons
javascript
menace
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curvature
data
regular expressions
raspberry pi
light
european cup
correlation
guest posts
arithmetic
go
countdown
logo
national lottery
chalkdust magazine
finite group
reuleaux polygons
estimation
24 hour maths
big internet math-off
nonograms
crossnumber
pythagoras
christmas
manchester science festival
determinants
radio 4
game show probability
coins
hats
thirteen
books
crochet
friendly squares
bluesky
datasaurus dozen
matt parker
tmip
bempp
graph theory
plastic ratio
dataset
coventry
polynomials
sorting
mean
signorini conditions
craft
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pi approximation day
geometry
bots
world cup
game of life
quadrilaterals
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boundary element methods
a gamut of games
crossnumbers
gerry anderson
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approximation
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ucl
london underground
fence posts
final fantasy
royal institution
fonts
sobolev spaces
logic
oeis
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frobel
numbers
gaussian elimination
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triangles
zines
pi
preconditioning
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errors
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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
martin gardner
data visualisation
crochet
curvature
misleading statistics
python
crossnumbers
noughts and crosses
reuleaux polygons
game of life
cross stitch
inline code
folding tube maps
newcastle
24 hour maths
hyperbolic surfaces
phd
manchester science festival
oeis
pokémon
rhombicuboctahedron
boundary element methods
runge's phenomenon
christmas card
quadrilaterals
graphs
pi approximation day
advent calendar
numerical analysis
puzzles
ternary
errors
light
nine men's morris
crossnumber
a gamut of games
folding paper
fence posts
determinants
draughts
regular expressions
talking maths in public
mathslogicbot
dinosaurs
christmas
radio 4
convergence
bluesky
youtube
guest posts
coventry
programming
kings
chess
logic
royal baby
world cup
php
bempp
frobel
statistics
triangles
mathsjam
anscombe's quartet
mathsteroids
rugby
dataset
interpolation
sobolev spaces
pokémon wordle
mean
inverse matrices
data
people maths
live stream
gerry anderson
hannah fry
royal institution
dates
golden ratio
game show probability
logs
sport
matrix of cofactors
graph theory
weather station
fonts
latex
nonograms
pascal's triangle
bots
thirteen
video games
matrix of minors
map projections
numbers
captain scarlet
realhats
polynomials
geogebra
probability
finite element method
matrices
reddit
kenilworth
manchester
tetris
asteroids
trigonometry
sorting
propositional calculus
databet
flexagons
raspberry pi
tmip
bubble bobble
alphabets
javascript
chalkdust magazine
tennis
weak imposition
wave scattering
platonic solids
rust
machine learning
datasaurus dozen
squares
london underground
stickers
approximation
pythagoras
crosswords
harriss spiral
books
national lottery
ucl
correlation
wordle
binary
geometry
finite group
go
plastic ratio
partridge puzzle
pizza cutting
craft
pi
turtles
speed
accuracy
simultaneous equations
arithmetic
error bars
final fantasy
football
stirling numbers
london
warwick
wool
exponential growth
braiding
fractals
recursion
palindromes
computational complexity
golden spiral
gather town
bodmas
sound
hats
cambridge
zines
gaussian elimination
games
matrix multiplication
standard deviation
matt parker
coins
countdown
logo
news
preconditioning
edinburgh
hexapawn
friendly squares
signorini conditions
european cup
estimation
arrangement puzzles
dragon curves
electromagnetic field
big internet math-off
the aperiodical
chebyshev
pac-man
menace
© Matthew Scroggs 2012–2026
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