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Comments in green were written by me. Comments in blue were not written by me.
2023-12-27
Really enjoyed this years puzzles, Matt! 12 and 14 were favorites as well as the logic "meta-puzzle".
Don
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Happy 5+e-φ+√2 Approximation Day!
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A surprising fact about quadrilaterals
Interesting tautologies
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Log-scaled axes
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PhD thesis, chapter ∞
PhD thesis, chapter 5
PhD thesis, chapter 4
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PhD thesis, chapter 1
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Visualising MENACE's learning
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A non-converging LaTeX document
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Big Internet Math-Off stickers 2019
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Proving a conjecture
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Harriss and other spirals
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realhats
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Christmas cross stitch
MENACE in fiction
Christmas card 2018
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Christmas (2018) is coming!
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Runge's Phenomenon
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World Cup stickers 2018, pt. 3
Mathsteroids
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World Cup stickers 2018, pt. 2
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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?
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Origins of World War I
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Big Ben Strikes Again
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The importance of estimation error
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Logical contradictions
Palindromic dates
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Tube map kaleidocycles
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Solving the cross diagonal cover problem
Jun 2016
Braiding, pt. 2
Braiding, pt. 1
Making names in Life
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Euro 2016 stickers
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Proving Pythagoras' theorem
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How to kick a conversion
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How OEISbot works
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Optimal Pac-Man
Tube map stellated rhombicuboctahedron
Logic bot, pt. 2
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Tube map Platonic solids, pt. 3
2014
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Logic bot
Sep 2014
Electromagnetic Field talk
Jun 2014
Tennis maths
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World Cup stickers
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Countdown probability, pt. 2
Countdown probability
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New machine unfriendly £1 coin, pt. 2
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Assorted christmaths
Pointless probability
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"Uncanny" royal coincidence
Raspberry Pi weather station
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Tube map Platonic solids, pt. 2
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Tube map Platonic solids
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Archive
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2025
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How to write a crossnumber
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Dec 2024
A regular expression Christmas puzzle
Christmas card 2024
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Zines, pt. 2
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Chalkdust issue 17
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Logo Asteroids
Mar 2023
Mathsteroids on hyperbolic surfaces
Feb 2023
The databet
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Christmas (2022) is over
2022
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Dec 2022
Off-by-one errors
Christmas card 2022
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Christmas (2022) is coming!
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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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Christmas (2021) is over
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Christmas (2021) is coming!
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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 5+e-φ+√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
braiding
big internet math-off
final fantasy
fonts
24 hour maths
machine learning
mathsteroids
javascript
data
reddit
inverse matrices
hats
curvature
pac-man
matrix of cofactors
dinosaurs
martin gardner
dragon curves
tennis
asteroids
matrix of minors
estimation
dates
friendly squares
rhombicuboctahedron
hyperbolic surfaces
errors
determinants
programming
sport
kings
standard deviation
golden ratio
boundary element methods
menace
polynomials
bempp
chess
dataset
reuleaux polygons
manchester science festival
books
numerical analysis
matt parker
latex
accuracy
chalkdust magazine
cambridge
realhats
electromagnetic field
hannah fry
zines
plastic ratio
ternary
football
statistics
pizza cutting
triangles
go
pythagoras
craft
nine men's morris
guest posts
arithmetic
wave scattering
crossnumbers
stirling numbers
signorini conditions
interpolation
mathslogicbot
logs
gather town
recursion
bots
pi approximation day
people maths
youtube
raspberry pi
quadrilaterals
preconditioning
geometry
gaussian elimination
coins
london
live stream
weak imposition
squares
oeis
draughts
fence posts
frobel
manchester
talking maths in public
game of life
stickers
matrix multiplication
crossnumber
convergence
harriss spiral
palindromes
noughts and crosses
geogebra
video games
turtles
anscombe's quartet
weather station
regular expressions
advent calendar
gerry anderson
correlation
ucl
map projections
trigonometry
newcastle
phd
sound
runge's phenomenon
finite group
radio 4
national lottery
cross stitch
probability
news
royal baby
mathsjam
platonic solids
error bars
propositional calculus
finite element method
bodmas
captain scarlet
binary
misleading statistics
light
puzzles
mean
php
graph theory
rugby
bubble bobble
a gamut of games
wool
speed
python
hexapawn
computational complexity
sobolev spaces
countdown
logic
london underground
tmip
edinburgh
crochet
games
world cup
the aperiodical
matrices
exponential growth
chebyshev
numbers
graphs
fractals
flexagons
databet
game show probability
pascal's triangle
sorting
datasaurus dozen
christmas card
inline code
simultaneous equations
crosswords
christmas
pi
folding tube maps
folding paper
data visualisation
approximation
european cup
golden spiral
royal institution
logo
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