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Comments in green were written by me. Comments in blue were not written by me.
2024-12-25
Thank you so much for making these calendars each year - they've really become a part of our holiday routine, and I look forward to solving each puzzle in the quiet morning hours.
Tyler
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/blog/111
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Archive
Show me a random blog post
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
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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
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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
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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 -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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▲ 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
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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
▼ show ▼
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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
palindromes
countdown
pi approximation day
error bars
errors
friendly squares
cross stitch
standard deviation
rugby
tennis
chalkdust magazine
edinburgh
raspberry pi
logic
hannah fry
menace
rust
inverse matrices
football
manchester
geometry
pythagoras
graph theory
bluesky
matrix of cofactors
regular expressions
numerical analysis
dinosaurs
plastic ratio
propositional calculus
finite element method
speed
determinants
graphs
pokémon wordle
finite group
bodmas
stirling numbers
braiding
trigonometry
books
pi
matrix of minors
mathsjam
asteroids
approximation
folding paper
the aperiodical
warwick
boundary element methods
royal baby
correlation
logo
pizza cutting
video games
geogebra
binary
wool
electromagnetic field
reuleaux polygons
world cup
oeis
matrices
thirteen
youtube
noughts and crosses
sorting
pascal's triangle
craft
preconditioning
crossnumbers
light
weak imposition
london
triangles
signorini conditions
curvature
fonts
interpolation
advent calendar
hats
games
game of life
ternary
ucl
alphabets
programming
zines
inline code
databet
crochet
arithmetic
sobolev spaces
dragon curves
24 hour maths
bots
polynomials
convergence
weather station
flexagons
royal institution
dataset
bempp
phd
martin gardner
rhombicuboctahedron
people maths
coventry
partridge puzzle
kings
tmip
frobel
arrangement puzzles
data
dates
stickers
reddit
final fantasy
captain scarlet
sport
platonic solids
tetris
runge's phenomenon
matt parker
numbers
datasaurus dozen
matrix multiplication
hyperbolic surfaces
draughts
bubble bobble
golden spiral
radio 4
fence posts
wordle
machine learning
php
harriss spiral
nonograms
squares
gather town
logs
exponential growth
mean
gaussian elimination
realhats
news
computational complexity
simultaneous equations
turtles
quadrilaterals
go
fractals
guest posts
javascript
chess
accuracy
mathslogicbot
hexapawn
golden ratio
a gamut of games
probability
london underground
newcastle
coins
cambridge
map projections
crossnumber
estimation
wave scattering
pokémon
christmas
sound
gerry anderson
data visualisation
misleading statistics
christmas card
big internet math-off
latex
pac-man
national lottery
python
chebyshev
puzzles
manchester science festival
talking maths in public
mathsteroids
nine men's morris
recursion
anscombe's quartet
statistics
live stream
european cup
folding tube maps
game show probability
crosswords
kenilworth
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
recursion
a gamut of games
probability
craft
finite element method
error bars
arithmetic
ternary
accuracy
sound
phd
statistics
arrangement puzzles
folding paper
javascript
matrix multiplication
24 hour maths
captain scarlet
world cup
edinburgh
squares
live stream
fence posts
wool
rhombicuboctahedron
curvature
golden ratio
books
go
pac-man
manchester
fractals
game of life
cambridge
gather town
exponential growth
noughts and crosses
braiding
final fantasy
python
dataset
coins
weak imposition
geometry
chalkdust magazine
tennis
map projections
matrices
pizza cutting
zines
runge's phenomenon
datasaurus dozen
sport
chess
geogebra
talking maths in public
tetris
pokémon wordle
martin gardner
preconditioning
people maths
php
national lottery
coventry
stickers
radio 4
finite group
christmas card
inline code
golden spiral
crochet
platonic solids
approximation
menace
video games
bodmas
dragon curves
realhats
draughts
hexapawn
advent calendar
warwick
mathsjam
reuleaux polygons
fonts
friendly squares
christmas
gerry anderson
football
stirling numbers
correlation
raspberry pi
nine men's morris
crossnumbers
interpolation
hats
binary
puzzles
ucl
kings
estimation
regular expressions
crosswords
plastic ratio
simultaneous equations
royal baby
speed
graph theory
signorini conditions
logo
machine learning
light
bubble bobble
convergence
pascal's triangle
big internet math-off
dates
graphs
data visualisation
matrix of cofactors
thirteen
latex
quadrilaterals
sorting
rugby
kenilworth
the aperiodical
bempp
guest posts
bots
reddit
partridge puzzle
wave scattering
news
matrix of minors
games
pokémon
oeis
misleading statistics
game show probability
computational complexity
errors
gaussian elimination
matt parker
logic
european cup
numbers
programming
pythagoras
flexagons
crossnumber
numerical analysis
polynomials
pi
triangles
databet
mathslogicbot
chebyshev
london
electromagnetic field
royal institution
wordle
determinants
palindromes
logs
dinosaurs
frobel
asteroids
data
alphabets
standard deviation
turtles
cross stitch
nonograms
inverse matrices
manchester science festival
youtube
weather station
tmip
rust
boundary element methods
mean
hannah fry
newcastle
bluesky
anscombe's quartet
countdown
trigonometry
hyperbolic surfaces
folding tube maps
harriss spiral
mathsteroids
pi approximation day
sobolev spaces
london underground
propositional calculus
© Matthew Scroggs 2012–2026
on /blog/111