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Comments in green were written by me. Comments in blue were not written by me.
2022-12-26
Another year of great puzzles, Matt! I really appreciate it and look forward to working these every year.
Dan Whitman
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/blog/97
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Archive
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2026
May 2026
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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
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Feb 2024
Zines, pt. 2
Jan 2024
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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 -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
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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
radio 4
mean
mathslogicbot
bempp
christmas card
data
captain scarlet
manchester science festival
pokémon wordle
people maths
folding paper
turtles
inline code
datasaurus dozen
kings
standard deviation
partridge puzzle
rhombicuboctahedron
hexapawn
latex
propositional calculus
error bars
wordle
computational complexity
palindromes
curvature
flexagons
speed
talking maths in public
light
finite group
hyperbolic surfaces
coins
nine men's morris
crosswords
platonic solids
binary
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reddit
phd
dragon curves
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inverse matrices
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approximation
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tmip
royal baby
reuleaux polygons
php
ucl
frobel
pizza cutting
pythagoras
anscombe's quartet
bots
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errors
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matrix multiplication
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craft
estimation
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graphs
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hats
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pi approximation day
noughts and crosses
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recursion
books
plastic ratio
national lottery
advent calendar
gerry anderson
geogebra
the aperiodical
signorini conditions
world cup
newcastle
probability
preconditioning
gather town
youtube
graph theory
coventry
quadrilaterals
live stream
crossnumbers
fence posts
london
runge's phenomenon
trigonometry
golden spiral
golden ratio
map projections
chalkdust magazine
electromagnetic field
correlation
dataset
fractals
cross stitch
manchester
video games
chess
braiding
warwick
big internet math-off
pi
python
hannah fry
wave scattering
harriss spiral
countdown
crossnumber
martin gardner
weather station
sobolev spaces
dates
nonograms
thirteen
final fantasy
raspberry pi
squares
determinants
draughts
matt parker
databet
royal institution
edinburgh
kenilworth
football
exponential growth
ternary
matrix of minors
geometry
mathsjam
folding tube maps
rugby
data visualisation
matrix of cofactors
logs
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bubble bobble
numerical analysis
javascript
machine learning
mathsteroids
pokémon
zines
menace
games
regular expressions
sorting
rust
oeis
pascal's triangle
go
convergence
simultaneous equations
bluesky
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arrangement puzzles
programming
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puzzles
cambridge
24 hour maths
statistics
numbers
guest posts
realhats
triangles
pac-man
arithmetic
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
logo
oeis
bubble bobble
pythagoras
rugby
speed
bots
phd
european cup
approximation
game show probability
estimation
go
wool
cambridge
warwick
propositional calculus
golden spiral
recursion
final fantasy
mathsjam
sport
gerry anderson
crossnumbers
games
programming
sorting
simultaneous equations
royal institution
bluesky
partridge puzzle
arithmetic
the aperiodical
statistics
advent calendar
map projections
dataset
thirteen
rust
probability
london
dinosaurs
geogebra
friendly squares
weather station
regular expressions
accuracy
crossnumber
video games
manchester
chalkdust magazine
data visualisation
martin gardner
geometry
nonograms
anscombe's quartet
error bars
frobel
errors
matrix multiplication
electromagnetic field
dates
draughts
coins
folding paper
stirling numbers
inline code
inverse matrices
game of life
world cup
javascript
palindromes
alphabets
numerical analysis
determinants
raspberry pi
triangles
matrices
ucl
menace
bempp
stickers
coventry
dragon curves
kenilworth
christmas
binary
boundary element methods
news
tmip
weak imposition
wave scattering
manchester science festival
christmas card
puzzles
pizza cutting
pi approximation day
exponential growth
graphs
finite group
quadrilaterals
signorini conditions
standard deviation
books
fonts
newcastle
matrix of cofactors
mathsteroids
hats
flexagons
plastic ratio
wordle
a gamut of games
squares
24 hour maths
nine men's morris
tennis
reuleaux polygons
arrangement puzzles
pokémon
kings
misleading statistics
databet
computational complexity
logic
pi
mathslogicbot
light
talking maths in public
zines
gaussian elimination
preconditioning
matrix of minors
countdown
data
matt parker
datasaurus dozen
ternary
craft
big internet math-off
pascal's triangle
captain scarlet
pac-man
chebyshev
finite element method
platonic solids
harriss spiral
mean
interpolation
royal baby
realhats
bodmas
london underground
braiding
radio 4
guest posts
cross stitch
crochet
php
python
correlation
folding tube maps
chess
machine learning
curvature
hyperbolic surfaces
tetris
turtles
people maths
crosswords
hannah fry
rhombicuboctahedron
pokémon wordle
graph theory
runge's phenomenon
fence posts
reddit
live stream
edinburgh
sobolev spaces
youtube
numbers
fractals
latex
hexapawn
polynomials
gather town
asteroids
national lottery
logs
noughts and crosses
football
convergence
golden ratio
trigonometry
sound
© Matthew Scroggs 2012–2026
on /blog/97