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Comments in green were written by me. Comments in blue were not written by me.
2024-12-29
I am so appreciative that you continue to make these puzzles every year. I think I started doing them in 2017 and always enjoy them. Thank you!
Jessica
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Archive
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2025
Jan 2025
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Friendly squares
2024
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Dec 2024
A regular expression Christmas puzzle
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Nov 2024
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Feb 2024
Zines, pt. 2
Jan 2024
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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 1+sin(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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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
datasaurus dozen
fonts
ternary
pi
curvature
big internet math-off
youtube
chebyshev
stickers
royal baby
talking maths in public
golden ratio
palindromes
craft
cambridge
live stream
graphs
ucl
cross stitch
probability
rhombicuboctahedron
programming
data
noughts and crosses
regular expressions
recursion
sport
map projections
trigonometry
logs
phd
statistics
a gamut of games
arithmetic
oeis
golden spiral
folding tube maps
mean
frobel
bots
dataset
go
news
london underground
electromagnetic field
captain scarlet
24 hour maths
boundary element methods
hats
logo
the aperiodical
asteroids
convergence
tennis
matt parker
finite group
gaussian elimination
runge's phenomenon
bodmas
fractals
newcastle
games
books
wave scattering
wool
friendly squares
correlation
rugby
numerical analysis
numbers
manchester
crossnumber
polynomials
weather station
finite element method
raspberry pi
hyperbolic surfaces
hexapawn
php
graph theory
game of life
football
matrix of minors
approximation
harriss spiral
advent calendar
logic
chalkdust magazine
radio 4
crochet
folding paper
bubble bobble
world cup
inline code
mathslogicbot
reuleaux polygons
turtles
exponential growth
sound
geogebra
draughts
error bars
pizza cutting
braiding
inverse matrices
london
anscombe's quartet
binary
guest posts
stirling numbers
bempp
national lottery
countdown
matrices
signorini conditions
pac-man
interpolation
standard deviation
misleading statistics
puzzles
machine learning
manchester science festival
quadrilaterals
edinburgh
dragon curves
kings
matrix multiplication
pi approximation day
data visualisation
errors
weak imposition
gerry anderson
geometry
royal institution
flexagons
preconditioning
hannah fry
mathsjam
dates
zines
tmip
latex
computational complexity
people maths
european cup
javascript
light
matrix of cofactors
simultaneous equations
databet
speed
video games
estimation
determinants
realhats
triangles
sobolev spaces
platonic solids
fence posts
gather town
accuracy
pascal's triangle
mathsteroids
sorting
final fantasy
menace
game show probability
plastic ratio
python
dinosaurs
chess
squares
reddit
christmas
christmas card
pythagoras
nine men's morris
coins
martin gardner
propositional calculus
Archive
Show me a random blog post
▼ show ▼
▲ hide ▲
2025
Jan 2025
Christmas (2024) is over
Friendly squares
2024
▼ show ▼
▲ hide ▲
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 1+sin(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
hannah fry
braiding
countdown
electromagnetic field
ucl
the aperiodical
newcastle
people maths
turtles
numbers
wool
asteroids
sobolev spaces
captain scarlet
finite group
statistics
cross stitch
martin gardner
oeis
numerical analysis
mathslogicbot
map projections
london underground
royal baby
bodmas
probability
trigonometry
radio 4
data
crochet
menace
weather station
data visualisation
matrix of minors
hyperbolic surfaces
manchester
folding paper
graph theory
arithmetic
rhombicuboctahedron
game of life
bempp
error bars
go
speed
pythagoras
dragon curves
realhats
mathsjam
books
noughts and crosses
draughts
bots
bubble bobble
reddit
finite element method
pi
logs
national lottery
flexagons
dates
latex
recursion
chalkdust magazine
curvature
inline code
geometry
dinosaurs
graphs
preconditioning
talking maths in public
wave scattering
inverse matrices
databet
misleading statistics
fractals
signorini conditions
errors
rugby
computational complexity
guest posts
javascript
matrix of cofactors
big internet math-off
exponential growth
a gamut of games
pi approximation day
mathsteroids
sound
live stream
pac-man
plastic ratio
interpolation
matrices
coins
gaussian elimination
simultaneous equations
tmip
chebyshev
final fantasy
binary
platonic solids
approximation
palindromes
accuracy
standard deviation
polynomials
fonts
ternary
harriss spiral
boundary element methods
football
crossnumber
stickers
edinburgh
python
phd
reuleaux polygons
manchester science festival
fence posts
zines
logic
geogebra
game show probability
machine learning
pascal's triangle
programming
pizza cutting
datasaurus dozen
nine men's morris
games
world cup
gather town
regular expressions
hats
puzzles
squares
dataset
raspberry pi
matrix multiplication
mean
sorting
news
golden ratio
24 hour maths
estimation
friendly squares
php
hexapawn
triangles
folding tube maps
european cup
sport
determinants
royal institution
kings
matt parker
logo
convergence
chess
youtube
tennis
weak imposition
gerry anderson
advent calendar
frobel
correlation
anscombe's quartet
propositional calculus
craft
quadrilaterals
christmas card
golden spiral
london
cambridge
video games
stirling numbers
light
runge's phenomenon
christmas
© Matthew Scroggs 2012–2025
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