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Comments in green were written by me. Comments in blue were not written by me.
2025-12-30
Another great collection of puzzles, thank you! 21 was, indeed, a challenge. Perms and combs got there quite quickly after a long time of not getting there :) Happy holidays everyone!
Kirsty
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Proving a conjecture
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Runge's Phenomenon
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A bad Puzzle for Today
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The importance of estimation error
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Solving the cross diagonal cover problem
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Braiding, pt. 2
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Optimal Pac-Man
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Electromagnetic Field talk
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Assorted christmaths
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A regular expression Christmas puzzle
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Build your own MENACE
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Christmas (2020) is over
2020
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Dec 2020
Christmas card 2020
Nov 2020
Christmas (2020) is coming!
Jul 2020
Happy -2+e+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 ▼
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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
▼ 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
london underground
games
javascript
computational complexity
geogebra
hyperbolic surfaces
gerry anderson
matt parker
matrix multiplication
game show probability
logs
wool
world cup
partridge puzzle
books
graphs
runge's phenomenon
probability
mathsteroids
pascal's triangle
gather town
numbers
quadrilaterals
estimation
simultaneous equations
correlation
bubble bobble
databet
dataset
binary
crossnumber
crossnumbers
hannah fry
hats
kenilworth
misleading statistics
coventry
christmas
rugby
harriss spiral
guest posts
football
flexagons
golden spiral
machine learning
matrices
royal institution
frobel
exponential growth
turtles
mathsjam
accuracy
python
chalkdust magazine
trigonometry
the aperiodical
countdown
manchester
draughts
standard deviation
anscombe's quartet
reuleaux polygons
talking maths in public
sorting
london
oeis
pi
approximation
pac-man
fonts
determinants
kings
phd
a gamut of games
finite element method
captain scarlet
inline code
zines
national lottery
big internet math-off
edinburgh
graph theory
manchester science festival
braiding
wave scattering
matrix of cofactors
nonograms
finite group
people maths
triangles
nine men's morris
pi approximation day
speed
stirling numbers
live stream
radio 4
curvature
puzzles
php
error bars
chess
mathslogicbot
recursion
weather station
warwick
gaussian elimination
light
reddit
weak imposition
squares
sound
go
european cup
noughts and crosses
convergence
errors
statistics
raspberry pi
craft
fence posts
video games
final fantasy
tmip
datasaurus dozen
logo
boundary element methods
pizza cutting
youtube
signorini conditions
dates
christmas card
advent calendar
bodmas
game of life
data visualisation
martin gardner
royal baby
newcastle
electromagnetic field
sport
fractals
interpolation
arithmetic
latex
platonic solids
programming
geometry
map projections
bots
numerical analysis
coins
bempp
regular expressions
folding tube maps
polynomials
alphabets
plastic ratio
golden ratio
crochet
propositional calculus
data
logic
sobolev spaces
matrix of minors
preconditioning
24 hour maths
friendly squares
news
dinosaurs
pythagoras
menace
rust
folding paper
hexapawn
palindromes
realhats
ucl
chebyshev
thirteen
mean
inverse matrices
tennis
ternary
cross stitch
crosswords
dragon curves
asteroids
stickers
cambridge
rhombicuboctahedron
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