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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 -3+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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▲ 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
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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
fence posts
tmip
chess
hats
reuleaux polygons
boundary element methods
weather station
matrices
kings
datasaurus dozen
video games
go
errors
royal baby
finite element method
light
programming
matrix of minors
pokémon
geogebra
javascript
radio 4
national lottery
final fantasy
mean
frobel
sound
data visualisation
misleading statistics
statistics
countdown
24 hour maths
sobolev spaces
stirling numbers
inline code
crochet
manchester science festival
curvature
graphs
hannah fry
platonic solids
youtube
convergence
noughts and crosses
pac-man
hexapawn
a gamut of games
hyperbolic surfaces
exponential growth
runge's phenomenon
error bars
draughts
folding paper
dragon curves
warwick
mathslogicbot
plastic ratio
captain scarlet
chebyshev
fonts
correlation
propositional calculus
fractals
nine men's morris
computational complexity
weak imposition
pokémon wordle
realhats
braiding
trigonometry
sport
matt parker
coins
matrix of cofactors
alphabets
london
probability
flexagons
mathsjam
the aperiodical
speed
determinants
raspberry pi
rust
books
simultaneous equations
rhombicuboctahedron
harriss spiral
databet
stickers
arrangement puzzles
christmas
edinburgh
electromagnetic field
asteroids
world cup
dinosaurs
php
numerical analysis
bodmas
data
regular expressions
quadrilaterals
kenilworth
puzzles
cambridge
gerry anderson
pizza cutting
european cup
craft
pi approximation day
royal institution
reddit
bempp
big internet math-off
ucl
dataset
python
thirteen
preconditioning
crosswords
turtles
games
graph theory
estimation
interpolation
talking maths in public
partridge puzzle
menace
golden ratio
bubble bobble
polynomials
game of life
london underground
logs
tetris
folding tube maps
accuracy
geometry
map projections
football
friendly squares
tennis
numbers
christmas card
rugby
crossnumbers
inverse matrices
triangles
live stream
game show probability
phd
latex
cross stitch
bluesky
signorini conditions
mathsteroids
news
ternary
approximation
martin gardner
zines
recursion
palindromes
nonograms
logo
binary
dates
manchester
wordle
crossnumber
finite group
squares
guest posts
sorting
anscombe's quartet
gaussian elimination
logic
bots
wave scattering
machine learning
standard deviation
chalkdust magazine
advent calendar
coventry
oeis
pythagoras
gather town
arithmetic
pascal's triangle
golden spiral
people maths
newcastle
pi
wool
matrix multiplication
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+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
fence posts
signorini conditions
platonic solids
matrix of minors
boundary element methods
matt parker
pokémon
dataset
pythagoras
graph theory
manchester science festival
databet
mean
gather town
standard deviation
computational complexity
ucl
noughts and crosses
countdown
propositional calculus
tmip
anscombe's quartet
final fantasy
errors
wave scattering
bubble bobble
rugby
coins
stickers
cambridge
sorting
finite group
misleading statistics
datasaurus dozen
runge's phenomenon
nonograms
tetris
news
game show probability
games
menace
weather station
oeis
nine men's morris
pascal's triangle
graphs
realhats
kings
hannah fry
books
thirteen
christmas
matrices
folding paper
triangles
cross stitch
zines
a gamut of games
gerry anderson
bodmas
golden ratio
logs
london
statistics
latex
coventry
pokémon wordle
christmas card
reddit
estimation
youtube
bempp
football
warwick
craft
harriss spiral
map projections
arrangement puzzles
recursion
ternary
hyperbolic surfaces
martin gardner
london underground
programming
braiding
radio 4
pac-man
geogebra
dinosaurs
friendly squares
flexagons
approximation
stirling numbers
tennis
frobel
crossnumber
manchester
world cup
royal baby
asteroids
24 hour maths
bluesky
trigonometry
pizza cutting
php
speed
draughts
golden spiral
video games
dragon curves
matrix multiplication
captain scarlet
advent calendar
electromagnetic field
edinburgh
alphabets
binary
numerical analysis
fonts
numbers
interpolation
chess
puzzles
inverse matrices
live stream
chalkdust magazine
sobolev spaces
crochet
palindromes
big internet math-off
talking maths in public
machine learning
chebyshev
finite element method
polynomials
rust
pi approximation day
matrix of cofactors
crosswords
mathslogicbot
reuleaux polygons
mathsjam
bots
data visualisation
wordle
quadrilaterals
preconditioning
the aperiodical
raspberry pi
people maths
gaussian elimination
weak imposition
partridge puzzle
sport
dates
convergence
wool
kenilworth
probability
javascript
go
plastic ratio
sound
light
geometry
curvature
mathsteroids
squares
regular expressions
european cup
determinants
phd
national lottery
python
error bars
folding tube maps
exponential growth
accuracy
newcastle
fractals
arithmetic
inline code
hats
turtles
logo
pi
simultaneous equations
guest posts
hexapawn
game of life
correlation
royal institution
crossnumbers
logic
data
rhombicuboctahedron
© Matthew Scroggs 2012–2026
on /blog/111