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.
2026-01-18
Will you be posting solutions? I have what is to me an acceptable answer but I think I might be missing a couple of squares
Ewan Leeming
on
/blog/121
Archive
Show me a random blog post
2026
Feb 2026
Christmas (2025) is over
2025
▼ show ▼
▲ hide ▲
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
▼ 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 1+cos(τ) 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
folding paper
boundary element methods
gerry anderson
numerical analysis
latex
simultaneous equations
graph theory
python
london
realhats
manchester
go
24 hour maths
matrix of cofactors
phd
world cup
game of life
ucl
gather town
warwick
fence posts
oeis
newcastle
hyperbolic surfaces
fonts
php
rugby
crosswords
folding tube maps
javascript
royal baby
matrix multiplication
frobel
speed
fractals
electromagnetic field
bodmas
anscombe's quartet
talking maths in public
machine learning
computational complexity
probability
polynomials
binary
hannah fry
golden spiral
pi
royal institution
weather station
chalkdust magazine
accuracy
interpolation
youtube
crochet
dragon curves
sorting
recursion
wool
mathslogicbot
bots
pythagoras
big internet math-off
thirteen
nine men's morris
golden ratio
exponential growth
trigonometry
christmas
error bars
numbers
logo
finite group
errors
sobolev spaces
chess
pac-man
rhombicuboctahedron
convergence
the aperiodical
news
weak imposition
geogebra
cambridge
graphs
a gamut of games
tennis
guest posts
draughts
tmip
mathsteroids
wave scattering
inline code
raspberry pi
logic
datasaurus dozen
data visualisation
radio 4
crossnumber
palindromes
european cup
programming
matt parker
games
hats
bubble bobble
advent calendar
zines
live stream
approximation
craft
signorini conditions
estimation
regular expressions
menace
flexagons
reddit
data
plastic ratio
pizza cutting
sport
game show probability
final fantasy
coventry
determinants
harriss spiral
turtles
runge's phenomenon
map projections
correlation
propositional calculus
kenilworth
manchester science festival
dinosaurs
national lottery
sound
matrix of minors
hexapawn
chebyshev
kings
stickers
dataset
christmas card
nonograms
video games
mathsjam
preconditioning
asteroids
crossnumbers
london underground
inverse matrices
braiding
bempp
partridge puzzle
pi approximation day
platonic solids
quadrilaterals
squares
cross stitch
stirling numbers
statistics
noughts and crosses
arithmetic
geometry
alphabets
martin gardner
databet
ternary
edinburgh
coins
reuleaux polygons
logs
triangles
matrices
captain scarlet
people maths
puzzles
mean
rust
light
curvature
misleading statistics
gaussian elimination
pascal's triangle
countdown
dates
finite element method
books
friendly squares
standard deviation
football
Archive
Show me a random blog post
▼ show ▼
▲ hide ▲
2026
Feb 2026
Christmas (2025) is over
2025
▼ show ▼
▲ hide ▲
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
▼ 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 1+cos(τ) 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
graph theory
computational complexity
news
people maths
frobel
arithmetic
ucl
video games
game of life
numbers
approximation
sobolev spaces
trigonometry
pi
databet
inverse matrices
bempp
matrix multiplication
rhombicuboctahedron
platonic solids
hats
standard deviation
mathslogicbot
chebyshev
european cup
harriss spiral
simultaneous equations
manchester
propositional calculus
sport
latex
matrices
python
correlation
royal baby
runge's phenomenon
live stream
guest posts
convergence
raspberry pi
sorting
london
hannah fry
logs
flexagons
partridge puzzle
warwick
friendly squares
reuleaux polygons
map projections
youtube
noughts and crosses
signorini conditions
oeis
24 hour maths
coins
manchester science festival
electromagnetic field
puzzles
coventry
mathsjam
thirteen
ternary
speed
the aperiodical
gerry anderson
binary
martin gardner
logo
mean
world cup
php
talking maths in public
hexapawn
data
anscombe's quartet
logic
craft
golden spiral
dates
crosswords
fonts
final fantasy
fractals
weak imposition
programming
alphabets
crossnumber
games
curvature
fence posts
light
squares
zines
tennis
inline code
stirling numbers
dragon curves
nonograms
pi approximation day
pascal's triangle
captain scarlet
pizza cutting
crochet
books
reddit
chess
javascript
bodmas
geogebra
royal institution
probability
countdown
folding tube maps
weather station
bubble bobble
go
chalkdust magazine
wool
recursion
stickers
error bars
a gamut of games
folding paper
christmas
graphs
crossnumbers
gaussian elimination
polynomials
data visualisation
dinosaurs
edinburgh
cross stitch
matrix of cofactors
exponential growth
phd
golden ratio
accuracy
interpolation
braiding
quadrilaterals
plastic ratio
menace
mathsteroids
sound
asteroids
nine men's morris
radio 4
national lottery
realhats
palindromes
matrix of minors
football
newcastle
estimation
bots
determinants
triangles
advent calendar
finite group
numerical analysis
preconditioning
kenilworth
dataset
geometry
draughts
hyperbolic surfaces
tmip
finite element method
rust
misleading statistics
big internet math-off
rugby
gather town
boundary element methods
wave scattering
game show probability
london underground
machine learning
statistics
errors
pythagoras
kings
turtles
regular expressions
pac-man
matt parker
cambridge
datasaurus dozen
christmas card
© Matthew Scroggs 2012–2026
on /blog/121