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2015-12-25
@
asdf
: Five completely correct entries so far. I'll announce the first batch of winners soon...
Matthew
on
/blog/23
Archive
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Mixing Wordle with other games
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A nonogram alphabet
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How to write a crossnumber
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Friendly squares
2024
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A regular expression Christmas puzzle
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Chalkdust issue 17
Apr 2023
Logo Asteroids
Mar 2023
Mathsteroids on hyperbolic surfaces
Feb 2023
The databet
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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
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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
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Dec 2020
Christmas card 2020
Nov 2020
Christmas (2020) is coming!
Jul 2020
Happy -6+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
▼ show ▼
▲ hide ▲
Nov 2012
Tube map Platonic solids, pt. 2
Oct 2012
Tube map Platonic solids
Tags
datasaurus dozen
light
electromagnetic field
newcastle
accuracy
games
friendly squares
trigonometry
weak imposition
frobel
wave scattering
thirteen
christmas
programming
sorting
matrix multiplication
phd
numbers
fonts
rust
game show probability
quadrilaterals
chalkdust magazine
golden ratio
convergence
puzzles
pizza cutting
ucl
curvature
logo
dates
graph theory
turtles
advent calendar
stirling numbers
pac-man
national lottery
christmas card
platonic solids
machine learning
data visualisation
mean
the aperiodical
dragon curves
countdown
regular expressions
bempp
gather town
radio 4
alphabets
speed
fence posts
probability
pi
pokémon wordle
chess
live stream
raspberry pi
arrangement puzzles
dinosaurs
finite group
recursion
logic
wool
misleading statistics
approximation
people maths
map projections
flexagons
london underground
menace
propositional calculus
world cup
big internet math-off
hexapawn
noughts and crosses
plastic ratio
polynomials
tetris
golden spiral
zines
european cup
inverse matrices
bots
news
video games
tennis
go
london
manchester science festival
exponential growth
gerry anderson
finite element method
statistics
matrix of minors
standard deviation
edinburgh
hats
rhombicuboctahedron
mathslogicbot
correlation
databet
oeis
estimation
pascal's triangle
computational complexity
books
crossnumbers
geometry
arithmetic
hyperbolic surfaces
palindromes
kings
football
mathsjam
ternary
wordle
guest posts
cross stitch
chebyshev
determinants
numerical analysis
royal baby
cambridge
php
crosswords
boundary element methods
reuleaux polygons
dataset
reddit
coins
final fantasy
crochet
harriss spiral
nonograms
draughts
triangles
braiding
preconditioning
sport
craft
realhats
weather station
mathsteroids
asteroids
logs
sobolev spaces
warwick
interpolation
nine men's morris
martin gardner
stickers
folding tube maps
rugby
inline code
data
simultaneous equations
hannah fry
pi approximation day
matrix of cofactors
royal institution
latex
geogebra
gaussian elimination
kenilworth
fractals
partridge puzzle
graphs
matrices
youtube
runge's phenomenon
matt parker
crossnumber
error bars
errors
tmip
24 hour maths
pokémon
folding paper
python
bluesky
a gamut of games
bubble bobble
manchester
talking maths in public
signorini conditions
squares
javascript
sound
bodmas
pythagoras
anscombe's quartet
coventry
binary
game of life
captain scarlet
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 -6+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
inverse matrices
fence posts
errors
squares
games
pythagoras
coventry
interpolation
bubble bobble
crossnumber
harriss spiral
ternary
wordle
sport
polynomials
tetris
matrix of minors
weather station
matt parker
geometry
dinosaurs
big internet math-off
mathsteroids
rust
final fantasy
stirling numbers
golden ratio
mathsjam
machine learning
london underground
radio 4
video games
recursion
game show probability
hyperbolic surfaces
pac-man
the aperiodical
sobolev spaces
manchester science festival
probability
european cup
martin gardner
wool
frobel
royal institution
gerry anderson
finite group
datasaurus dozen
accuracy
puzzles
weak imposition
preconditioning
numerical analysis
edinburgh
hexapawn
convergence
trigonometry
finite element method
estimation
thirteen
people maths
asteroids
error bars
national lottery
kings
chess
phd
ucl
graphs
matrix multiplication
standard deviation
programming
misleading statistics
gather town
palindromes
chalkdust magazine
logic
royal baby
arithmetic
pascal's triangle
folding tube maps
turtles
live stream
a gamut of games
python
platonic solids
map projections
craft
regular expressions
rhombicuboctahedron
graph theory
bluesky
pi
nine men's morris
computational complexity
php
football
curvature
inline code
oeis
chebyshev
crosswords
speed
propositional calculus
crochet
dragon curves
wave scattering
pizza cutting
24 hour maths
world cup
fractals
electromagnetic field
cross stitch
manchester
menace
christmas
light
boundary element methods
braiding
reuleaux polygons
tmip
stickers
fonts
logo
flexagons
hats
bodmas
quadrilaterals
alphabets
sorting
guest posts
crossnumbers
news
dataset
data
mean
books
reddit
matrices
bempp
advent calendar
newcastle
realhats
approximation
runge's phenomenon
cambridge
pokémon wordle
exponential growth
statistics
hannah fry
numbers
youtube
golden spiral
simultaneous equations
arrangement puzzles
kenilworth
captain scarlet
tennis
databet
matrix of cofactors
correlation
zines
draughts
bots
noughts and crosses
partridge puzzle
geogebra
raspberry pi
pi approximation day
coins
game of life
binary
nonograms
plastic ratio
gaussian elimination
anscombe's quartet
logs
triangles
signorini conditions
mathslogicbot
sound
christmas card
javascript
folding paper
data visualisation
friendly squares
warwick
determinants
dates
london
rugby
pokémon
latex
go
talking maths in public
countdown
© Matthew Scroggs 2012–2026
on /blog/23