mscroggs
.co.uk
mscroggs
.co.uk
blog
puzzles
academic
talks
contact
subscribe
↓ ☰ ↓
subscribe
Loading image...
Comment
Comments
Comments in green were written by me. Comments in blue were not written by me.
2019-12-12
@
(anonymous)
: Yes. Every islander will either always tell the truth or always lie.
Matthew
on
/blog/69
Archive
Show me a random blog post
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
mathsjam
frobel
mathslogicbot
fractals
data visualisation
people maths
gather town
sound
sobolev spaces
pythagoras
news
reddit
gaussian elimination
reuleaux polygons
chalkdust magazine
ternary
christmas card
the aperiodical
bodmas
royal baby
probability
convergence
cross stitch
dates
final fantasy
speed
rugby
alphabets
matrix multiplication
european cup
martin gardner
edinburgh
national lottery
php
correlation
inline code
bempp
plastic ratio
nonograms
manchester
dragon curves
cambridge
approximation
london underground
preconditioning
error bars
numbers
game show probability
curvature
logic
nine men's morris
map projections
asteroids
misleading statistics
zines
radio 4
advent calendar
hyperbolic surfaces
pokémon wordle
bots
binary
friendly squares
trigonometry
sport
geometry
menace
datasaurus dozen
crossnumbers
royal institution
coins
pac-man
realhats
exponential growth
anscombe's quartet
pi
estimation
video games
mathsteroids
signorini conditions
stickers
stirling numbers
chebyshev
live stream
squares
logo
rhombicuboctahedron
hexapawn
london
captain scarlet
countdown
golden ratio
pokémon
pascal's triangle
talking maths in public
geogebra
javascript
manchester science festival
braiding
bluesky
24 hour maths
latex
runge's phenomenon
platonic solids
simultaneous equations
noughts and crosses
partridge puzzle
finite element method
wool
turtles
computational complexity
warwick
tennis
numerical analysis
christmas
youtube
raspberry pi
propositional calculus
electromagnetic field
newcastle
python
crochet
chess
books
regular expressions
kenilworth
databet
thirteen
draughts
tmip
harriss spiral
hannah fry
interpolation
boundary element methods
dataset
tetris
pizza cutting
folding paper
golden spiral
matrices
pi approximation day
light
hats
flexagons
wave scattering
palindromes
phd
weak imposition
machine learning
gerry anderson
arrangement puzzles
games
recursion
matt parker
puzzles
mean
standard deviation
kings
inverse matrices
crossnumber
oeis
bubble bobble
dinosaurs
a gamut of games
fence posts
accuracy
logs
quadrilaterals
statistics
craft
sorting
triangles
football
rust
ucl
errors
polynomials
game of life
coventry
folding tube maps
fonts
go
world cup
guest posts
data
graphs
matrix of cofactors
weather station
programming
crosswords
determinants
big internet math-off
wordle
matrix of minors
finite group
graph theory
arithmetic
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
manchester
bodmas
pi approximation day
edinburgh
harriss spiral
european cup
turtles
data
game show probability
captain scarlet
realhats
youtube
football
platonic solids
finite group
menace
cambridge
mean
countdown
video games
golden spiral
frobel
squares
christmas card
correlation
inline code
propositional calculus
ucl
rugby
determinants
reddit
graph theory
rhombicuboctahedron
people maths
phd
runge's phenomenon
inverse matrices
thirteen
radio 4
estimation
stickers
dataset
matrix of cofactors
matrix multiplication
fence posts
statistics
gaussian elimination
rust
game of life
hyperbolic surfaces
cross stitch
fractals
reuleaux polygons
standard deviation
craft
live stream
arrangement puzzles
pythagoras
advent calendar
wordle
signorini conditions
trigonometry
royal institution
computational complexity
dates
programming
matt parker
weather station
coins
crochet
matrix of minors
geometry
puzzles
plastic ratio
curvature
bubble bobble
mathslogicbot
chess
london underground
sport
asteroids
dragon curves
databet
bempp
light
finite element method
flexagons
pi
crossnumbers
triangles
pizza cutting
sound
tmip
zines
boundary element methods
approximation
talking maths in public
weak imposition
php
kenilworth
nine men's morris
draughts
hats
tetris
recursion
exponential growth
go
quadrilaterals
wool
simultaneous equations
crossnumber
anscombe's quartet
map projections
convergence
chalkdust magazine
sobolev spaces
games
braiding
numerical analysis
martin gardner
national lottery
numbers
error bars
datasaurus dozen
books
pac-man
probability
sorting
palindromes
mathsjam
news
data visualisation
24 hour maths
folding paper
noughts and crosses
hexapawn
london
electromagnetic field
arithmetic
machine learning
python
polynomials
fonts
bluesky
oeis
the aperiodical
wave scattering
big internet math-off
mathsteroids
latex
stirling numbers
regular expressions
tennis
logs
matrices
ternary
warwick
preconditioning
kings
bots
pascal's triangle
raspberry pi
nonograms
logo
graphs
interpolation
folding tube maps
chebyshev
speed
christmas
newcastle
errors
binary
alphabets
pokémon wordle
crosswords
friendly squares
pokémon
geogebra
logic
gerry anderson
manchester science festival
partridge puzzle
misleading statistics
dinosaurs
coventry
final fantasy
guest posts
accuracy
golden ratio
gather town
hannah fry
world cup
a gamut of games
javascript
royal baby
© Matthew Scroggs 2012–2026
on /blog/69