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Comments in green were written by me. Comments in blue were not written by me.
2024-12-27
@
Seth Cohen
: Thanks Seth, I solved it by looking at the 5×5 picture and thinking harder. Thanks to Matthew for another enjoyable set of puzzles. I look forward to reading the proper solution.
Reza
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/blog/111
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Christmas (2025) is coming!
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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
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A regular expression Christmas puzzle
Christmas card 2024
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Zines, pt. 2
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Christmas (2023) is over
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Mathsteroids on hyperbolic surfaces
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Off-by-one errors
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Christmas (2022) is coming!
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24 Hour Maths Game Show
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Feb 2022
Build your own MENACE
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Christmas (2021) is coming!
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Christmas (2020) is over
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Dec 2020
Christmas card 2020
Nov 2020
Christmas (2020) is coming!
Jul 2020
Happy -4-φ-√2+5√3 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
inverse matrices
golden spiral
sorting
edinburgh
geogebra
chess
speed
oeis
python
logic
matrices
24 hour maths
chebyshev
logo
books
menace
mean
cambridge
determinants
puzzles
plastic ratio
inline code
light
pizza cutting
a gamut of games
london
quadrilaterals
numbers
crosswords
phd
map projections
go
trigonometry
harriss spiral
fractals
coventry
wool
stirling numbers
standard deviation
recursion
databet
bots
friendly squares
electromagnetic field
mathsteroids
frobel
pokémon
php
reddit
wave scattering
live stream
advent calendar
mathsjam
folding paper
world cup
hats
martin gardner
sobolev spaces
bubble bobble
final fantasy
kings
warwick
nine men's morris
nonograms
datasaurus dozen
simultaneous equations
probability
crochet
rhombicuboctahedron
video games
crossnumbers
matt parker
data visualisation
anscombe's quartet
programming
palindromes
finite element method
data
pascal's triangle
ternary
talking maths in public
countdown
folding tube maps
news
game show probability
javascript
arithmetic
statistics
graph theory
draughts
gerry anderson
royal baby
squares
finite group
approximation
manchester science festival
misleading statistics
numerical analysis
hyperbolic surfaces
sound
exponential growth
guest posts
youtube
big internet math-off
logs
the aperiodical
newcastle
bodmas
chalkdust magazine
weak imposition
partridge puzzle
rugby
people maths
radio 4
weather station
raspberry pi
flexagons
errors
asteroids
hexapawn
machine learning
braiding
gather town
interpolation
error bars
captain scarlet
hannah fry
tennis
signorini conditions
golden ratio
correlation
matrix of cofactors
pythagoras
european cup
binary
alphabets
tmip
graphs
regular expressions
football
accuracy
geometry
runge's phenomenon
bluesky
gaussian elimination
christmas card
fence posts
dinosaurs
game of life
sport
pi
royal institution
arrangement puzzles
convergence
craft
tetris
polynomials
cross stitch
latex
bempp
boundary element methods
dates
platonic solids
zines
ucl
pac-man
games
wordle
fonts
manchester
propositional calculus
kenilworth
matrix multiplication
preconditioning
estimation
curvature
christmas
turtles
dragon curves
thirteen
mathslogicbot
matrix of minors
reuleaux polygons
stickers
triangles
rust
coins
computational complexity
crossnumber
national lottery
pi approximation day
realhats
noughts and crosses
dataset
pokémon wordle
london underground
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