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.
2021-12-13
Can it be assumed that before each reindeer has a different favourite food, and/or that the saboteur fed each reindeer a unique food each test flight?
Elijah
on
/blog/91
×1
2021-12-14
@
Elijah
: Each reindeer was fed exactly one food before each test flight. Multiple reindeer may have the same favourite foods.
Matthew
on
/blog/91
×1
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 -2+g-π 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
craft
crochet
cross stitch
signorini conditions
matrix of minors
anscombe's quartet
frobel
video games
guest posts
alphabets
braiding
mathsteroids
crossnumber
fractals
latex
weak imposition
dragon curves
the aperiodical
youtube
final fantasy
edinburgh
manchester
plastic ratio
big internet math-off
bodmas
convergence
royal institution
sobolev spaces
determinants
tmip
pascal's triangle
estimation
matrix of cofactors
a gamut of games
weather station
menace
computational complexity
talking maths in public
boundary element methods
machine learning
correlation
geogebra
php
reddit
bempp
ucl
golden ratio
raspberry pi
turtles
football
pi approximation day
draughts
chess
reuleaux polygons
chebyshev
stickers
hexapawn
pi
logs
finite group
quadrilaterals
javascript
standard deviation
oeis
newcastle
approximation
gather town
phd
programming
coins
golden spiral
coventry
24 hour maths
news
fonts
propositional calculus
sound
recursion
python
pizza cutting
logic
manchester science festival
rust
harriss spiral
martin gardner
kenilworth
noughts and crosses
finite element method
gaussian elimination
data visualisation
rhombicuboctahedron
folding paper
game show probability
christmas
probability
mean
folding tube maps
interpolation
geometry
hyperbolic surfaces
data
books
rugby
wave scattering
partridge puzzle
palindromes
thirteen
tennis
go
stirling numbers
hannah fry
gerry anderson
warwick
matt parker
accuracy
london underground
datasaurus dozen
crossnumbers
puzzles
trigonometry
pythagoras
matrix multiplication
pac-man
map projections
friendly squares
radio 4
mathslogicbot
databet
matrices
sorting
triangles
mathsjam
squares
nine men's morris
numbers
preconditioning
royal baby
electromagnetic field
graphs
regular expressions
errors
game of life
misleading statistics
inline code
chalkdust magazine
world cup
sport
curvature
runge's phenomenon
light
hats
statistics
realhats
christmas card
flexagons
bubble bobble
london
nonograms
countdown
platonic solids
binary
european cup
polynomials
cambridge
people maths
wool
logo
exponential growth
inverse matrices
dinosaurs
ternary
advent calendar
arithmetic
asteroids
zines
fence posts
numerical analysis
error bars
live stream
captain scarlet
simultaneous equations
bots
national lottery
kings
graph theory
games
crosswords
dates
dataset
speed
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 -2+g-π 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
sobolev spaces
palindromes
zines
logo
programming
mathsjam
kings
video games
crosswords
light
ucl
a gamut of games
datasaurus dozen
mathsteroids
matrices
preconditioning
hannah fry
youtube
kenilworth
flexagons
arithmetic
pythagoras
electromagnetic field
golden spiral
bots
people maths
platonic solids
curvature
gerry anderson
numbers
friendly squares
24 hour maths
inline code
captain scarlet
stirling numbers
matrix multiplication
hexapawn
inverse matrices
folding tube maps
dataset
dragon curves
approximation
plastic ratio
hyperbolic surfaces
frobel
european cup
pi
games
pascal's triangle
royal institution
tmip
phd
interpolation
reuleaux polygons
cambridge
latex
newcastle
coins
wave scattering
map projections
dinosaurs
rust
final fantasy
graph theory
oeis
geogebra
fence posts
errors
accuracy
christmas
ternary
data visualisation
regular expressions
bempp
python
correlation
sport
weak imposition
london
noughts and crosses
dates
gaussian elimination
football
weather station
runge's phenomenon
advent calendar
menace
numerical analysis
gather town
royal baby
php
chebyshev
asteroids
rhombicuboctahedron
turtles
christmas card
live stream
cross stitch
sound
squares
thirteen
radio 4
matrix of minors
game show probability
trigonometry
pac-man
harriss spiral
pi approximation day
propositional calculus
polynomials
boundary element methods
game of life
draughts
realhats
binary
go
warwick
estimation
exponential growth
golden ratio
guest posts
partridge puzzle
mean
books
bubble bobble
talking maths in public
finite element method
logs
big internet math-off
the aperiodical
speed
world cup
standard deviation
reddit
computational complexity
tennis
crossnumber
bodmas
folding paper
stickers
nonograms
graphs
mathslogicbot
misleading statistics
craft
countdown
martin gardner
convergence
manchester science festival
error bars
machine learning
nine men's morris
data
national lottery
chalkdust magazine
determinants
london underground
crossnumbers
matrix of cofactors
quadrilaterals
recursion
probability
logic
databet
manchester
braiding
geometry
fonts
javascript
statistics
fractals
edinburgh
hats
sorting
rugby
signorini conditions
alphabets
pizza cutting
wool
finite group
news
coventry
chess
triangles
raspberry pi
simultaneous equations
matt parker
anscombe's quartet
crochet
puzzles
© Matthew Scroggs 2012–2026
on /blog/91