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Comments in green were written by me. Comments in blue were not written by me.
2025-09-13
Great to do remotely, thanks! I think there is a typo in your solution for clue 4 although final answer is correct. Last sum prior to answer should read 1951 x 1/2 x 1949 x 1950 I think.
Lizzie
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A surprising fact about quadrilaterals
Interesting tautologies
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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
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A non-converging LaTeX document
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Proving a conjecture
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Harriss and other spirals
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Mathsteroids
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A bad Puzzle for Today
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Building MENACEs for other games
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A 20,000-to-1 baby?
World Cup stickers 2018
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Origins of World War I
Christmas (2017) is over
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Christmas (2017) is coming!
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Big Ben Strikes Again
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The end of coins of constant width
Dragon curves II
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The importance of estimation error
Jan 2017
Is MEDUSA the new BODMAS?
2016
▼ show ▼
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Dec 2016
Christmas (2016) is over
Video game surfaces
Christmas card 2016
Nov 2016
Christmas (2016) is coming!
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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
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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
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▼ show ▼
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Tube map Platonic solids, pt. 2
Oct 2012
Tube map Platonic solids
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plastic ratio
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estimation
anscombe's quartet
tmip
geometry
royal institution
databet
runge's phenomenon
gather town
computational complexity
partridge puzzle
advent calendar
wave scattering
christmas card
coventry
latex
kenilworth
accuracy
dataset
mathslogicbot
php
data visualisation
triangles
gerry anderson
oeis
mathsteroids
youtube
numbers
chalkdust magazine
frobel
geogebra
braiding
misleading statistics
inverse matrices
the aperiodical
arrangement puzzles
hexapawn
alphabets
fence posts
dragon curves
preconditioning
draughts
recursion
pi approximation day
crosswords
thirteen
bempp
nine men's morris
pi
people maths
flexagons
folding tube maps
live stream
light
exponential growth
bluesky
determinants
edinburgh
golden spiral
chebyshev
interpolation
binary
probability
harriss spiral
cambridge
palindromes
matrix of cofactors
talking maths in public
weak imposition
javascript
programming
golden ratio
royal baby
correlation
statistics
christmas
gaussian elimination
newcastle
hats
rugby
trigonometry
error bars
radio 4
numerical analysis
matrix multiplication
pokémon
cross stitch
inline code
phd
european cup
nonograms
boundary element methods
stirling numbers
weather station
logic
logo
realhats
go
mean
dates
world cup
finite element method
matt parker
data
python
kings
propositional calculus
game of life
noughts and crosses
reuleaux polygons
bodmas
menace
standard deviation
wordle
logs
map projections
ucl
puzzles
bubble bobble
pac-man
stickers
folding paper
chess
friendly squares
manchester
reddit
guest posts
asteroids
crossnumbers
platonic solids
ternary
quadrilaterals
game show probability
final fantasy
pokémon wordle
approximation
a gamut of games
sorting
news
sound
simultaneous equations
video games
crochet
rust
polynomials
craft
convergence
countdown
pythagoras
matrix of minors
wool
london
national lottery
speed
pizza cutting
dinosaurs
graphs
manchester science festival
signorini conditions
electromagnetic field
sport
warwick
tennis
zines
pascal's triangle
martin gardner
books
hyperbolic surfaces
crossnumber
fractals
curvature
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24 hour maths
hannah fry
sobolev spaces
graph theory
squares
captain scarlet
fonts
regular expressions
raspberry pi
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tetris
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