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Comments in green were written by me. Comments in blue were not written by me.
2020-12-04
First, thank you for this gift. This was just what I needed to get through my day.
Second, I feel that I did something wrong, I see the picture, but I'm struggling with the fact that I did not color 4 and 13 black. Did I do something wrong?
Tara
on
/blog/87
×1
2020-12-04
@
Tara
: Yes, looks like you may have got an incorrect answer for one of the black puzzles
Matthew
on
/blog/87
×1
×2
×1
×1
×1
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A surprising fact about quadrilaterals
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Log-scaled axes
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PhD thesis, chapter ∞
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Inverting a matrix
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PhD thesis, chapter 1
Gaussian elimination
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Visualising MENACE's learning
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A non-converging LaTeX document
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Proving a conjecture
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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?
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Origins of World War I
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Big Ben Strikes Again
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The end of coins of constant width
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The importance of estimation error
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Is MEDUSA the new BODMAS?
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Solving the cross diagonal cover problem
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Braiding, pt. 2
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Making names in Life
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Euro 2016 stickers
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Proving Pythagoras' theorem
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Optimal Pac-Man
Tube map stellated rhombicuboctahedron
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Logic bot
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Electromagnetic Field talk
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Tennis maths
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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
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Assorted christmaths
Pointless probability
Jul 2013
"Uncanny" royal coincidence
Raspberry Pi weather station
2012
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Tube map Platonic solids, pt. 2
Oct 2012
Tube map Platonic solids
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Archive
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2026
May 2026
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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 -10+e√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
machine learning
weather station
dates
fractals
tmip
fence posts
braiding
bempp
datasaurus dozen
finite group
crosswords
php
guest posts
boundary element methods
wool
computational complexity
a gamut of games
runge's phenomenon
dragon curves
exponential growth
preconditioning
london
world cup
raspberry pi
convergence
hyperbolic surfaces
regular expressions
video games
determinants
matrix of minors
rugby
misleading statistics
alphabets
arrangement puzzles
matrices
estimation
weak imposition
pokémon
latex
hannah fry
frobel
arithmetic
recursion
correlation
fonts
wordle
pi approximation day
inverse matrices
binary
final fantasy
captain scarlet
tennis
ternary
reuleaux polygons
the aperiodical
london underground
matt parker
databet
menace
graphs
data
games
advent calendar
asteroids
mathsteroids
rust
chalkdust magazine
thirteen
signorini conditions
matrix multiplication
geogebra
data visualisation
golden spiral
mean
countdown
folding tube maps
wave scattering
trigonometry
numerical analysis
realhats
gerry anderson
newcastle
bubble bobble
simultaneous equations
programming
stickers
sobolev spaces
graph theory
craft
accuracy
manchester science festival
stirling numbers
christmas card
chebyshev
coventry
logs
geometry
big internet math-off
propositional calculus
approximation
kenilworth
standard deviation
crossnumbers
dinosaurs
javascript
puzzles
harriss spiral
light
speed
phd
cambridge
pokémon wordle
logo
edinburgh
royal institution
draughts
rhombicuboctahedron
oeis
gather town
palindromes
game show probability
turtles
noughts and crosses
friendly squares
python
go
pythagoras
crochet
bluesky
nine men's morris
quadrilaterals
pac-man
matrix of cofactors
reddit
pi
errors
polynomials
crossnumber
cross stitch
partridge puzzle
numbers
error bars
logic
bots
pascal's triangle
martin gardner
ucl
folding paper
anscombe's quartet
football
dataset
royal baby
youtube
electromagnetic field
sound
coins
inline code
squares
european cup
map projections
warwick
manchester
plastic ratio
zines
nonograms
statistics
news
interpolation
game of life
sport
finite element method
24 hour maths
hexapawn
tetris
flexagons
radio 4
golden ratio
sorting
christmas
platonic solids
live stream
triangles
talking maths in public
hats
mathsjam
probability
gaussian elimination
pizza cutting
people maths
kings
bodmas
mathslogicbot
books
national lottery
curvature
chess
© Matthew Scroggs 2012–2026
Second, I feel that I did something wrong, I see the picture, but I'm struggling with the fact that I did not color 4 and 13 black. Did I do something wrong?
on /blog/87