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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 bad Puzzle for Today
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Christmas (2020) is coming!
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Happy 1+sin(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 ▼
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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
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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!
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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
sound
standard deviation
boundary element methods
pi
braiding
dataset
friendly squares
exponential growth
estimation
tennis
books
numerical analysis
guest posts
data visualisation
craft
gather town
correlation
computational complexity
matrix multiplication
triangles
signorini conditions
countdown
probability
logs
harriss spiral
convergence
folding tube maps
football
kings
finite group
realhats
statistics
crosswords
squares
24 hour maths
inverse matrices
sorting
numbers
matrices
preconditioning
interpolation
palindromes
latex
hyperbolic surfaces
light
bodmas
radio 4
programming
sobolev spaces
matrix of cofactors
chebyshev
dragon curves
mean
arithmetic
video games
runge's phenomenon
noughts and crosses
phd
nine men's morris
captain scarlet
bots
manchester science festival
royal baby
pi approximation day
martin gardner
manchester
misleading statistics
a gamut of games
reddit
christmas
electromagnetic field
royal institution
ternary
speed
raspberry pi
christmas card
recursion
cross stitch
flexagons
databet
golden ratio
pizza cutting
fence posts
youtube
mathslogicbot
pac-man
matrix of minors
stickers
frobel
go
cambridge
geometry
quadrilaterals
hexapawn
mathsteroids
oeis
polynomials
gaussian elimination
puzzles
bubble bobble
geogebra
datasaurus dozen
rugby
map projections
crossnumber
game of life
python
alphabets
curvature
talking maths in public
errors
data
chess
national lottery
ucl
dinosaurs
hats
weather station
london underground
hannah fry
stirling numbers
logo
simultaneous equations
live stream
pythagoras
plastic ratio
coins
london
people maths
rhombicuboctahedron
sport
turtles
weak imposition
binary
php
zines
world cup
anscombe's quartet
tmip
advent calendar
menace
news
reuleaux polygons
crossnumbers
game show probability
trigonometry
machine learning
fractals
golden spiral
folding paper
logic
wave scattering
regular expressions
wool
european cup
pascal's triangle
the aperiodical
chalkdust magazine
gerry anderson
edinburgh
error bars
dates
newcastle
crochet
propositional calculus
final fantasy
finite element method
big internet math-off
mathsjam
graphs
inline code
fonts
games
bempp
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graph theory
accuracy
matt parker
determinants
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© Matthew Scroggs 2012–2025
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