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Comments in green were written by me. Comments in blue were not written by me.
2020-12-11
Hi Matthew
If I'm wrong, don't bother to answer, but I suspect there might be an error in the wording of Number 11.
I don't think it's possible to solve it right now.
Cheers
Moss
on
/blog/86
2020-12-11
@
Moss
: You were correct: as you were writing this, I was correcting the puzzle. It should now be correct
Matthew
on
/blog/86
×1
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Assorted christmaths
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Archive
Show me a random blog post
▼ show ▼
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2026
May 2026
World Cup stickers 2026
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 -5+tan(√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
arrangement puzzles
news
asteroids
partridge puzzle
ternary
cross stitch
world cup
noughts and crosses
draughts
manchester
rugby
palindromes
a gamut of games
pac-man
pizza cutting
nine men's morris
fonts
sorting
matrix of minors
wool
weather station
quadrilaterals
coins
polynomials
sound
mean
pi approximation day
advent calendar
final fantasy
numbers
turtles
manchester science festival
dataset
plastic ratio
chess
stickers
london underground
christmas
kings
signorini conditions
logo
geogebra
hyperbolic surfaces
crossnumber
guest posts
crosswords
thirteen
bubble bobble
edinburgh
live stream
accuracy
gaussian elimination
databet
game of life
oeis
24 hour maths
wordle
zines
bots
video games
finite element method
speed
martin gardner
error bars
geometry
estimation
programming
rhombicuboctahedron
reuleaux polygons
logs
exponential growth
electromagnetic field
christmas card
binary
pi
matrix of cofactors
graphs
crossnumbers
probability
kenilworth
weak imposition
latex
data visualisation
stirling numbers
python
pokémon wordle
matrix multiplication
approximation
reddit
finite group
standard deviation
matt parker
tmip
pythagoras
menace
go
correlation
dates
boundary element methods
convergence
sobolev spaces
hexapawn
datasaurus dozen
light
london
propositional calculus
nonograms
interpolation
frobel
coventry
flexagons
dragon curves
friendly squares
game show probability
machine learning
mathsjam
triangles
folding tube maps
phd
computational complexity
games
arithmetic
royal institution
folding paper
mathslogicbot
anscombe's quartet
puzzles
simultaneous equations
inline code
youtube
php
tennis
countdown
preconditioning
ucl
crochet
newcastle
the aperiodical
gather town
golden ratio
map projections
graph theory
royal baby
platonic solids
braiding
rust
fence posts
gerry anderson
javascript
cambridge
logic
warwick
squares
chebyshev
radio 4
errors
chalkdust magazine
football
captain scarlet
fractals
wave scattering
runge's phenomenon
big internet math-off
harriss spiral
alphabets
national lottery
european cup
people maths
bodmas
pascal's triangle
regular expressions
mathsteroids
sport
golden spiral
curvature
talking maths in public
numerical analysis
tetris
hats
books
hannah fry
misleading statistics
recursion
craft
dinosaurs
realhats
determinants
bluesky
trigonometry
pokémon
inverse matrices
bempp
statistics
raspberry pi
matrices
data
© Matthew Scroggs 2012–2026
If I'm wrong, don't bother to answer, but I suspect there might be an error in the wording of Number 11.
I don't think it's possible to solve it right now.
Cheers
on /blog/86