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2023-12-26
This year felt much more difficult than previous years. Definitely not complaining, especially with how day 23 felt completely impossible until it wasn't -- that feeling is why I love these sorts of puzzles. Cheers!
Eric
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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
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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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May 2021
Close encounters of the second kind
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Christmas (2020) is over
2020
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Dec 2020
Christmas card 2020
Nov 2020
Christmas (2020) is coming!
Jul 2020
Happy -12+5e-π+√3 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
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▲ 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
trigonometry
ternary
flexagons
inline code
fonts
sorting
wave scattering
logic
matrix of minors
gather town
kings
pi approximation day
tetris
partridge puzzle
computational complexity
radio 4
news
reuleaux polygons
logo
stickers
errors
quadrilaterals
hyperbolic surfaces
games
convergence
realhats
crosswords
sobolev spaces
national lottery
golden ratio
pascal's triangle
dates
draughts
polynomials
python
a gamut of games
matrix multiplication
christmas card
football
binary
gerry anderson
raspberry pi
mathsteroids
ucl
probability
mathslogicbot
hannah fry
coins
weak imposition
coventry
matt parker
logs
chebyshev
dinosaurs
pokémon
map projections
game show probability
arithmetic
programming
bempp
boundary element methods
zines
cross stitch
live stream
latex
finite element method
crossnumbers
kenilworth
bubble bobble
geogebra
accuracy
manchester
thirteen
regular expressions
numerical analysis
london
squares
tmip
data
big internet math-off
alphabets
recursion
phd
plastic ratio
crochet
advent calendar
newcastle
folding paper
mean
simultaneous equations
golden spiral
pi
matrices
anscombe's quartet
dragon curves
propositional calculus
countdown
captain scarlet
sound
javascript
christmas
speed
preconditioning
bodmas
noughts and crosses
inverse matrices
bluesky
rhombicuboctahedron
estimation
wordle
folding tube maps
sport
guest posts
graphs
electromagnetic field
dataset
weather station
machine learning
graph theory
matrix of cofactors
arrangement puzzles
talking maths in public
fractals
triangles
hexapawn
correlation
rust
mathsjam
platonic solids
24 hour maths
braiding
palindromes
statistics
oeis
wool
curvature
london underground
the aperiodical
nonograms
error bars
interpolation
european cup
manchester science festival
martin gardner
stirling numbers
numbers
menace
pizza cutting
friendly squares
hats
misleading statistics
tennis
video games
exponential growth
craft
edinburgh
runge's phenomenon
final fantasy
databet
datasaurus dozen
go
pokémon wordle
chess
determinants
crossnumber
nine men's morris
fence posts
puzzles
harriss spiral
turtles
gaussian elimination
bots
pac-man
royal baby
cambridge
rugby
signorini conditions
light
standard deviation
books
royal institution
warwick
php
game of life
data visualisation
world cup
approximation
finite group
people maths
reddit
youtube
frobel
geometry
pythagoras
asteroids
chalkdust magazine
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 -12+5e-π+√3 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
pascal's triangle
gaussian elimination
gerry anderson
speed
approximation
crossnumber
braiding
the aperiodical
dataset
turtles
map projections
zines
tmip
video games
harriss spiral
boundary element methods
stirling numbers
dates
european cup
finite element method
fonts
fence posts
newcastle
reuleaux polygons
machine learning
platonic solids
wool
inline code
pizza cutting
wordle
dinosaurs
javascript
live stream
crossnumbers
crochet
tetris
datasaurus dozen
partridge puzzle
golden spiral
pac-man
folding tube maps
pythagoras
mathsteroids
cross stitch
inverse matrices
rhombicuboctahedron
weather station
electromagnetic field
asteroids
graphs
determinants
squares
computational complexity
logo
phd
stickers
manchester science festival
logs
matrices
statistics
rugby
convergence
matrix multiplication
martin gardner
world cup
bluesky
royal baby
crosswords
runge's phenomenon
london underground
friendly squares
countdown
books
nine men's morris
probability
pi approximation day
ucl
frobel
logic
fractals
regular expressions
binary
chalkdust magazine
reddit
advent calendar
people maths
golden ratio
matrix of cofactors
geometry
pokémon
alphabets
talking maths in public
bots
mean
pi
noughts and crosses
a gamut of games
tennis
triangles
hexapawn
sorting
pokémon wordle
light
radio 4
football
propositional calculus
manchester
numbers
matt parker
geogebra
youtube
interpolation
estimation
accuracy
coventry
data visualisation
palindromes
numerical analysis
captain scarlet
databet
kings
christmas card
hats
hyperbolic surfaces
national lottery
christmas
menace
curvature
chebyshev
error bars
correlation
finite group
exponential growth
draughts
bempp
news
puzzles
rust
php
craft
misleading statistics
games
nonograms
chess
ternary
london
sound
polynomials
edinburgh
bubble bobble
oeis
sobolev spaces
trigonometry
wave scattering
matrix of minors
simultaneous equations
graph theory
24 hour maths
big internet math-off
realhats
gather town
data
warwick
royal institution
sport
cambridge
mathsjam
thirteen
plastic ratio
standard deviation
mathslogicbot
signorini conditions
coins
preconditioning
dragon curves
programming
errors
guest posts
anscombe's quartet
hannah fry
final fantasy
game show probability
game of life
kenilworth
python
arrangement puzzles
go
quadrilaterals
bodmas
raspberry pi
arithmetic
flexagons
weak imposition
recursion
folding paper
latex
© Matthew Scroggs 2012–2026
on /blog/107