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Comments in green were written by me. Comments in blue were not written by me.
2024-12-25
Another great calendar! Looking forward to the solution write-ups in the new year to see how all the puzzles I solved with Python were meant to be solved with pure mathematics :D
Aaron
on
/blog/111
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A regular expression Christmas puzzle
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Chalkdust issue 17
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Mar 2023
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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Christmas (2022) is coming!
Oct 2022
24 Hour Maths Game Show
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Approximating π
Feb 2022
Build your own MENACE
Jan 2022
Christmas (2021) is over
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Nov 2021
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TMiP 2021 puzzle hunt
May 2021
Close encounters of the second kind
Jan 2021
Christmas (2020) is over
2020
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Dec 2020
Christmas card 2020
Nov 2020
Christmas (2020) is coming!
Jul 2020
Happy -9+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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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
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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
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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
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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
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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
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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
▼ show ▼
▲ hide ▲
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
stirling numbers
cross stitch
countdown
anscombe's quartet
chalkdust magazine
golden ratio
fence posts
convergence
inline code
programming
pythagoras
standard deviation
dragon curves
mean
chebyshev
fonts
simultaneous equations
wave scattering
matrix of cofactors
interpolation
finite element method
realhats
radio 4
video games
martin gardner
kings
sound
sobolev spaces
ternary
wool
logo
dataset
misleading statistics
bluesky
hyperbolic surfaces
raspberry pi
matrix multiplication
mathsjam
weak imposition
matrix of minors
coventry
hannah fry
crochet
signorini conditions
inverse matrices
chess
coins
bots
kenilworth
hexapawn
stickers
flexagons
light
zines
numbers
bubble bobble
correlation
braiding
ucl
alphabets
menace
game show probability
newcastle
preconditioning
determinants
logic
fractals
machine learning
a gamut of games
turtles
manchester science festival
arrangement puzzles
frobel
european cup
edinburgh
bodmas
exponential growth
pi
guest posts
error bars
harriss spiral
accuracy
warwick
wordle
graph theory
tennis
royal baby
speed
pokémon
platonic solids
boundary element methods
propositional calculus
hats
numerical analysis
python
rugby
statistics
estimation
draughts
rhombicuboctahedron
sorting
phd
mathslogicbot
databet
palindromes
london underground
trigonometry
national lottery
graphs
news
computational complexity
arithmetic
gather town
latex
24 hour maths
reuleaux polygons
craft
noughts and crosses
captain scarlet
data visualisation
advent calendar
crossnumber
people maths
binary
world cup
golden spiral
rust
puzzles
pizza cutting
finite group
tetris
sport
recursion
weather station
go
geogebra
pi approximation day
crosswords
php
folding paper
pac-man
regular expressions
curvature
youtube
nonograms
gerry anderson
runge's phenomenon
friendly squares
partridge puzzle
christmas
logs
game of life
bempp
triangles
talking maths in public
squares
games
matt parker
errors
datasaurus dozen
christmas card
live stream
the aperiodical
mathsteroids
geometry
oeis
royal institution
polynomials
quadrilaterals
manchester
probability
gaussian elimination
big internet math-off
javascript
books
data
cambridge
map projections
approximation
reddit
football
matrices
nine men's morris
dinosaurs
pokémon wordle
pascal's triangle
final fantasy
plastic ratio
thirteen
asteroids
dates
folding tube maps
tmip
london
electromagnetic field
crossnumbers
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 -9+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
tmip
youtube
talking maths in public
python
matrix of cofactors
platonic solids
stickers
martin gardner
pokémon wordle
machine learning
kings
mathsjam
latex
finite element method
coins
london
rhombicuboctahedron
polynomials
inverse matrices
error bars
misleading statistics
rust
recursion
pythagoras
games
weak imposition
reddit
binary
cambridge
matrix multiplication
runge's phenomenon
harriss spiral
wordle
php
captain scarlet
javascript
chebyshev
correlation
squares
folding tube maps
go
fence posts
pi
the aperiodical
braiding
dates
logo
christmas card
pi approximation day
trigonometry
anscombe's quartet
turtles
pizza cutting
bots
fractals
gather town
pascal's triangle
weather station
quadrilaterals
estimation
tetris
world cup
people maths
hannah fry
mean
final fantasy
accuracy
speed
live stream
raspberry pi
game of life
dinosaurs
zines
data visualisation
ternary
draughts
computational complexity
curvature
gerry anderson
approximation
logs
inline code
crosswords
graphs
kenilworth
interpolation
national lottery
sobolev spaces
craft
golden ratio
bempp
hexapawn
crossnumbers
matt parker
oeis
flexagons
manchester
simultaneous equations
london underground
manchester science festival
logic
propositional calculus
light
databet
newcastle
folding paper
statistics
football
a gamut of games
mathslogicbot
radio 4
convergence
probability
advent calendar
game show probability
map projections
nine men's morris
numbers
frobel
nonograms
determinants
sorting
graph theory
plastic ratio
thirteen
arithmetic
coventry
guest posts
regular expressions
exponential growth
geogebra
asteroids
crossnumber
signorini conditions
chalkdust magazine
hats
video games
wool
warwick
cross stitch
alphabets
mathsteroids
noughts and crosses
chess
royal institution
reuleaux polygons
bluesky
palindromes
dragon curves
phd
pokémon
bodmas
news
royal baby
realhats
ucl
sound
triangles
books
hyperbolic surfaces
edinburgh
wave scattering
numerical analysis
sport
dataset
christmas
geometry
finite group
european cup
pac-man
programming
puzzles
gaussian elimination
rugby
errors
matrices
big internet math-off
24 hour maths
boundary element methods
countdown
tennis
friendly squares
data
stirling numbers
datasaurus dozen
arrangement puzzles
menace
preconditioning
golden spiral
electromagnetic field
matrix of minors
bubble bobble
crochet
standard deviation
fonts
partridge puzzle
© Matthew Scroggs 2012–2026
on /blog/111