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2025-12-20
The clue on the 20th is breaking my brain.
Seth Cohen
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/blog/120
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The databet
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Off-by-one errors
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24 Hour Maths Game Show
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Approximating π
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Build your own MENACE
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2020
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Jul 2020
Happy -3+τ-φ 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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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
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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
numerical analysis
pi approximation day
sorting
nine men's morris
runge's phenomenon
cross stitch
noughts and crosses
standard deviation
game of life
craft
chalkdust magazine
curvature
finite element method
partridge puzzle
fence posts
chebyshev
reddit
people maths
crossnumbers
numbers
arrangement puzzles
error bars
signorini conditions
cambridge
probability
oeis
a gamut of games
games
turtles
quadrilaterals
dates
matt parker
football
crossnumber
mathslogicbot
wool
talking maths in public
weak imposition
rhombicuboctahedron
programming
royal baby
matrix of minors
graphs
crochet
accuracy
logo
dataset
bubble bobble
php
london
folding tube maps
misleading statistics
bluesky
pac-man
trigonometry
world cup
data visualisation
frobel
hannah fry
golden ratio
databet
ternary
warwick
kenilworth
datasaurus dozen
go
coins
plastic ratio
newcastle
fractals
national lottery
flexagons
hyperbolic surfaces
ucl
hats
regular expressions
estimation
nonograms
pizza cutting
game show probability
gerry anderson
map projections
radio 4
countdown
recursion
phd
video games
folding paper
pi
wordle
youtube
dinosaurs
latex
matrix multiplication
squares
friendly squares
realhats
inverse matrices
electromagnetic field
convergence
martin gardner
pascal's triangle
statistics
dragon curves
wave scattering
finite group
bodmas
palindromes
platonic solids
machine learning
anscombe's quartet
coventry
light
determinants
kings
propositional calculus
pythagoras
big internet math-off
rugby
royal institution
polynomials
thirteen
christmas card
asteroids
geogebra
zines
inline code
harriss spiral
tennis
manchester science festival
christmas
correlation
bots
final fantasy
hexapawn
live stream
triangles
mathsjam
graph theory
sport
javascript
matrix of cofactors
alphabets
braiding
rust
preconditioning
manchester
data
mean
tmip
errors
captain scarlet
geometry
guest posts
chess
pokémon wordle
news
boundary element methods
exponential growth
logs
sound
gaussian elimination
puzzles
pokémon
crosswords
speed
sobolev spaces
stirling numbers
simultaneous equations
python
tetris
binary
fonts
arithmetic
the aperiodical
golden spiral
matrices
mathsteroids
edinburgh
logic
computational complexity
raspberry pi
approximation
bempp
interpolation
menace
advent calendar
london underground
weather station
european cup
draughts
gather town
24 hour maths
stickers
reuleaux polygons
books
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 -3+τ-φ 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
martin gardner
latex
cross stitch
wordle
numerical analysis
standard deviation
finite group
video games
braiding
recursion
javascript
php
reddit
harriss spiral
golden ratio
games
error bars
chess
light
runge's phenomenon
radio 4
fence posts
geogebra
dragon curves
estimation
folding paper
ternary
folding tube maps
accuracy
plastic ratio
zines
databet
coins
manchester science festival
python
draughts
graphs
exponential growth
live stream
misleading statistics
books
kenilworth
frobel
signorini conditions
kings
pokémon wordle
nine men's morris
curvature
christmas
matrix multiplication
sport
newcastle
royal institution
game of life
hyperbolic surfaces
christmas card
national lottery
geometry
royal baby
tmip
final fantasy
captain scarlet
rust
logo
polynomials
crossnumbers
realhats
pokémon
noughts and crosses
logs
pascal's triangle
sound
edinburgh
approximation
boundary element methods
palindromes
sobolev spaces
talking maths in public
datasaurus dozen
asteroids
propositional calculus
arrangement puzzles
coventry
bubble bobble
nonograms
platonic solids
convergence
mean
stickers
statistics
bodmas
dinosaurs
cambridge
friendly squares
pythagoras
triangles
crosswords
raspberry pi
dates
partridge puzzle
data visualisation
inline code
fonts
logic
fractals
electromagnetic field
matt parker
hats
anscombe's quartet
youtube
bluesky
european cup
ucl
phd
stirling numbers
determinants
gather town
big internet math-off
tetris
24 hour maths
data
alphabets
london
binary
arithmetic
turtles
numbers
golden spiral
countdown
london underground
pac-man
warwick
machine learning
rugby
pi approximation day
sorting
simultaneous equations
mathslogicbot
world cup
weak imposition
pizza cutting
people maths
puzzles
crochet
programming
wave scattering
oeis
chebyshev
graph theory
pi
quadrilaterals
flexagons
bots
mathsjam
advent calendar
gaussian elimination
menace
squares
gerry anderson
correlation
map projections
chalkdust magazine
regular expressions
game show probability
tennis
news
probability
speed
inverse matrices
guest posts
interpolation
weather station
bempp
preconditioning
mathsteroids
crossnumber
trigonometry
rhombicuboctahedron
dataset
hannah fry
reuleaux polygons
football
craft
wool
the aperiodical
matrix of minors
manchester
thirteen
matrix of cofactors
computational complexity
go
errors
matrices
hexapawn
finite element method
a gamut of games
© Matthew Scroggs 2012–2026
on /blog/120