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.
2017-12-20
What a fun diversion! I have to admit I can't remember how to solve #2 - I finally had to write some code. (So primitive.)
Heather
on
/blog/47
Archive
Show me a random blog post
2025
Mar 2025
How to write a crossnumber
Jan 2025
Christmas (2024) is over
Friendly squares
2024
▼ show ▼
▲ hide ▲
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 -3+e+π+φ-√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
european cup
crochet
fractals
youtube
hyperbolic surfaces
php
harriss spiral
live stream
plastic ratio
hexapawn
matt parker
numbers
world cup
standard deviation
logs
frobel
football
triangles
squares
recursion
programming
bots
interpolation
crossnumber
people maths
logic
advent calendar
javascript
mathslogicbot
arithmetic
edinburgh
folding paper
python
approximation
kings
games
menace
flexagons
ucl
talking maths in public
wool
latex
dragon curves
sport
zines
trigonometry
datasaurus dozen
rugby
coins
geogebra
go
convergence
bodmas
misleading statistics
curvature
crossnumbers
mathsjam
matrices
craft
raspberry pi
oeis
stirling numbers
reuleaux polygons
national lottery
error bars
golden spiral
game of life
fonts
preconditioning
inline code
dates
royal institution
crosswords
cross stitch
hats
asteroids
books
chebyshev
databet
tmip
machine learning
gerry anderson
finite group
numerical analysis
pi
sorting
palindromes
martin gardner
puzzles
data
map projections
turtles
folding tube maps
weather station
matrix multiplication
dataset
matrix of minors
final fantasy
data visualisation
pizza cutting
wave scattering
gather town
geometry
royal baby
binary
countdown
boundary element methods
chalkdust magazine
anscombe's quartet
exponential growth
a gamut of games
big internet math-off
game show probability
sound
weak imposition
regular expressions
logo
pascal's triangle
manchester science festival
ternary
estimation
electromagnetic field
guest posts
newcastle
phd
determinants
polynomials
probability
correlation
gaussian elimination
nine men's morris
cambridge
manchester
rhombicuboctahedron
inverse matrices
graphs
christmas card
friendly squares
draughts
braiding
pac-man
light
london
accuracy
the aperiodical
chess
signorini conditions
realhats
golden ratio
runge's phenomenon
finite element method
bempp
graph theory
pi approximation day
dinosaurs
christmas
quadrilaterals
tennis
sobolev spaces
noughts and crosses
simultaneous equations
platonic solids
hannah fry
statistics
errors
mean
london underground
stickers
reddit
computational complexity
captain scarlet
propositional calculus
matrix of cofactors
news
speed
video games
radio 4
24 hour maths
pythagoras
bubble bobble
mathsteroids
fence posts
Archive
Show me a random blog post
▼ show ▼
▲ hide ▲
2025
Mar 2025
How to write a crossnumber
Jan 2025
Christmas (2024) is over
Friendly squares
2024
▼ show ▼
▲ hide ▲
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 -3+e+π+φ-√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
radio 4
sorting
graph theory
mathslogicbot
captain scarlet
inline code
statistics
mean
determinants
rhombicuboctahedron
triangles
electromagnetic field
javascript
books
pi
football
chebyshev
folding tube maps
reuleaux polygons
frobel
dinosaurs
harriss spiral
misleading statistics
finite group
mathsjam
hats
php
trigonometry
london underground
people maths
newcastle
platonic solids
ternary
databet
national lottery
runge's phenomenon
countdown
a gamut of games
sport
manchester science festival
computational complexity
draughts
reddit
pi approximation day
correlation
rugby
plastic ratio
logic
binary
games
squares
coins
pizza cutting
matrix of minors
christmas card
turtles
cambridge
error bars
python
propositional calculus
boundary element methods
fence posts
fonts
dragon curves
arithmetic
inverse matrices
datasaurus dozen
nine men's morris
golden spiral
weak imposition
stickers
menace
youtube
stirling numbers
matt parker
crochet
graphs
weather station
24 hour maths
matrix multiplication
tennis
logs
crossnumbers
preconditioning
probability
geogebra
kings
geometry
signorini conditions
noughts and crosses
go
bempp
interpolation
speed
crossnumber
live stream
wave scattering
numerical analysis
pac-man
gerry anderson
final fantasy
news
approximation
regular expressions
asteroids
machine learning
crosswords
logo
map projections
wool
bots
quadrilaterals
hannah fry
chalkdust magazine
edinburgh
martin gardner
golden ratio
bubble bobble
finite element method
manchester
world cup
data
numbers
folding paper
hexapawn
programming
fractals
estimation
curvature
realhats
flexagons
simultaneous equations
palindromes
polynomials
craft
ucl
dates
gaussian elimination
anscombe's quartet
pythagoras
hyperbolic surfaces
pascal's triangle
the aperiodical
latex
sound
london
sobolev spaces
friendly squares
convergence
accuracy
errors
raspberry pi
matrices
guest posts
advent calendar
exponential growth
big internet math-off
braiding
puzzles
game of life
chess
phd
royal institution
recursion
zines
tmip
game show probability
matrix of cofactors
light
royal baby
mathsteroids
talking maths in public
bodmas
gather town
christmas
dataset
video games
standard deviation
data visualisation
oeis
cross stitch
european cup
© Matthew Scroggs 2012–2025
on /blog/47