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Comments in green were written by me. Comments in blue were not written by me.
2022-12-25
This is my third year of working with my son on the puzzles. We really enjoy it! Thanks again.
Liz
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2026
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How to write a crossnumber
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Chalkdust issue 17
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Mathsteroids on hyperbolic surfaces
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The databet
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Off-by-one errors
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24 Hour Maths Game Show
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Approximating π
Feb 2022
Build your own MENACE
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Close encounters of the second kind
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2020
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Nov 2020
Christmas (2020) is coming!
Jul 2020
Happy 2+g-φ-5√2 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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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
errors
runge's phenomenon
newcastle
golden spiral
logo
harriss spiral
signorini conditions
oeis
turtles
thirteen
captain scarlet
polynomials
pokémon wordle
tmip
reuleaux polygons
european cup
friendly squares
bubble bobble
nine men's morris
live stream
exponential growth
datasaurus dozen
anscombe's quartet
bodmas
dragon curves
cambridge
computational complexity
game of life
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arithmetic
hexapawn
pascal's triangle
bempp
bluesky
royal institution
inline code
coins
graph theory
palindromes
football
convergence
london underground
sound
london
flexagons
draughts
christmas card
sobolev spaces
weak imposition
binary
preconditioning
ternary
kings
programming
game show probability
the aperiodical
wool
numerical analysis
national lottery
arrangement puzzles
mathsjam
hyperbolic surfaces
databet
sorting
people maths
radio 4
gaussian elimination
chebyshev
machine learning
logs
misleading statistics
data
pythagoras
crochet
simultaneous equations
gerry anderson
regular expressions
mathslogicbot
golden ratio
warwick
braiding
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gather town
dataset
cross stitch
24 hour maths
bots
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royal baby
pi
youtube
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alphabets
accuracy
statistics
craft
curvature
countdown
fractals
fence posts
stickers
dinosaurs
trigonometry
rugby
zines
matrix multiplication
wave scattering
a gamut of games
triangles
correlation
weather station
estimation
asteroids
probability
quadrilaterals
approximation
plastic ratio
rust
interpolation
pac-man
sport
latex
matrices
determinants
folding paper
reddit
matt parker
numbers
logic
squares
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tetris
light
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pokémon
menace
standard deviation
mathsteroids
matrix of minors
manchester
books
partridge puzzle
guest posts
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stirling numbers
raspberry pi
noughts and crosses
finite group
talking maths in public
recursion
news
error bars
python
rhombicuboctahedron
geometry
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mean
final fantasy
speed
martin gardner
php
pizza cutting
propositional calculus
chalkdust magazine
frobel
inverse matrices
puzzles
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coventry
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graphs
folding tube maps
crosswords
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pi approximation day
geogebra
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ucl
matrix of cofactors
finite element method
christmas
manchester science festival
big internet math-off
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 2+g-φ-5√2 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
estimation
stickers
correlation
gerry anderson
pac-man
youtube
european cup
radio 4
exponential growth
news
martin gardner
partridge puzzle
databet
golden spiral
recursion
regular expressions
nonograms
matrix multiplication
hyperbolic surfaces
tmip
advent calendar
tetris
phd
statistics
sound
bodmas
logic
pythagoras
data
bempp
the aperiodical
standard deviation
determinants
approximation
captain scarlet
thirteen
turtles
latex
boundary element methods
christmas card
wordle
triangles
video games
quadrilaterals
matrix of cofactors
matrices
preconditioning
accuracy
ternary
probability
golden ratio
rugby
24 hour maths
pi
fractals
london underground
machine learning
ucl
chalkdust magazine
pokémon
newcastle
crossnumbers
anscombe's quartet
flexagons
simultaneous equations
fonts
geometry
draughts
weather station
christmas
reddit
game show probability
stirling numbers
puzzles
crochet
misleading statistics
dragon curves
crosswords
computational complexity
runge's phenomenon
bluesky
platonic solids
python
oeis
harriss spiral
coins
programming
weak imposition
hexapawn
people maths
noughts and crosses
logo
folding tube maps
manchester
errors
games
data visualisation
mathsteroids
live stream
cross stitch
arithmetic
chess
manchester science festival
friendly squares
warwick
mean
curvature
wool
binary
javascript
wave scattering
gather town
hats
pizza cutting
convergence
signorini conditions
inline code
guest posts
books
football
game of life
electromagnetic field
inverse matrices
dinosaurs
matrix of minors
finite group
numerical analysis
bots
craft
final fantasy
royal baby
logs
fence posts
a gamut of games
pascal's triangle
world cup
pi approximation day
mathslogicbot
crossnumber
php
graph theory
kings
rhombicuboctahedron
edinburgh
numbers
gaussian elimination
kenilworth
hannah fry
squares
braiding
geogebra
propositional calculus
cambridge
error bars
zines
datasaurus dozen
dates
graphs
raspberry pi
chebyshev
big internet math-off
coventry
asteroids
arrangement puzzles
menace
realhats
sobolev spaces
plastic ratio
tennis
dataset
folding paper
countdown
sport
mathsjam
matt parker
royal institution
talking maths in public
trigonometry
speed
palindromes
go
alphabets
finite element method
map projections
interpolation
national lottery
frobel
nine men's morris
rust
london
sorting
light
polynomials
reuleaux polygons
bubble bobble
pokémon wordle
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on /blog/97