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Comments in green were written by me. Comments in blue were not written by me.
2024-07-31
Incorrect answers are treated is correct.
Looking at the JavaScript code, I found that any value that is a key in the array "regions" is treated as correct for all puzzles.
Lars Nordenström
on
/blog/108
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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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PhD thesis, chapter 3
Inverting a matrix
PhD thesis, chapter 2
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PhD thesis, chapter 1
Gaussian elimination
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A non-converging LaTeX document
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Proving a conjecture
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Harriss and other spirals
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realhats
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Runge's Phenomenon
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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 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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Making names in Life
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Euro 2016 stickers
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Proving Pythagoras' theorem
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How to kick a conversion
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How OEISbot works
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Optimal Pac-Man
Tube map stellated rhombicuboctahedron
Logic bot, pt. 2
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Tube map Platonic solids, pt. 3
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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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Dec 2013
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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golden ratio
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anscombe's quartet
hats
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ucl
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braiding
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curvature
martin gardner
pokémon
puzzles
kenilworth
menace
reddit
folding paper
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flexagons
phd
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dinosaurs
harriss spiral
matrix of minors
numerical analysis
rhombicuboctahedron
propositional calculus
folding tube maps
correlation
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simultaneous equations
wool
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data visualisation
platonic solids
a gamut of games
sport
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tmip
24 hour maths
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big internet math-off
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numbers
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logo
the aperiodical
estimation
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dates
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rust
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geogebra
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golden spiral
go
game of life
partridge puzzle
ternary
misleading statistics
oeis
bodmas
talking maths in public
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people maths
gaussian elimination
inline code
matrices
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wordle
bubble bobble
finite group
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programming
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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 -26+eg 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
signorini conditions
partridge puzzle
datasaurus dozen
national lottery
nine men's morris
javascript
european cup
hyperbolic surfaces
mathsjam
latex
bubble bobble
graph theory
fence posts
convergence
statistics
sound
simultaneous equations
error bars
christmas
finite group
stirling numbers
machine learning
talking maths in public
live stream
databet
pizza cutting
wool
crochet
dates
game show probability
platonic solids
coventry
ternary
go
pi approximation day
triangles
draughts
pythagoras
propositional calculus
light
stickers
friendly squares
bots
accuracy
newcastle
hannah fry
martin gardner
chess
weak imposition
cross stitch
data
geogebra
mathsteroids
football
standard deviation
reddit
frobel
matrix of minors
trigonometry
approximation
folding paper
arithmetic
regular expressions
logic
noughts and crosses
royal baby
ucl
fonts
matt parker
edinburgh
folding tube maps
data visualisation
realhats
anscombe's quartet
fractals
pascal's triangle
guest posts
christmas card
golden ratio
pokémon wordle
binary
chebyshev
menace
mean
quadrilaterals
london underground
thirteen
flexagons
inverse matrices
php
crossnumber
matrix of cofactors
weather station
plastic ratio
recursion
misleading statistics
wordle
gaussian elimination
dataset
raspberry pi
sobolev spaces
captain scarlet
zines
probability
dinosaurs
graphs
harriss spiral
exponential growth
dragon curves
gather town
runge's phenomenon
inline code
rugby
bodmas
books
chalkdust magazine
24 hour maths
game of life
a gamut of games
royal institution
people maths
programming
rhombicuboctahedron
pokémon
reuleaux polygons
curvature
cambridge
coins
big internet math-off
arrangement puzzles
manchester
determinants
games
numbers
preconditioning
kenilworth
puzzles
tennis
numerical analysis
nonograms
speed
turtles
final fantasy
sorting
braiding
bluesky
wave scattering
phd
tmip
errors
matrices
warwick
countdown
map projections
asteroids
finite element method
logs
palindromes
logo
matrix multiplication
pi
python
mathslogicbot
video games
world cup
correlation
interpolation
manchester science festival
alphabets
pac-man
advent calendar
the aperiodical
london
hats
oeis
news
crossnumbers
crosswords
hexapawn
youtube
golden spiral
electromagnetic field
estimation
geometry
radio 4
computational complexity
craft
tetris
boundary element methods
sport
polynomials
gerry anderson
squares
rust
kings
bempp
© Matthew Scroggs 2012–2026
Looking at the JavaScript code, I found that any value that is a key in the array "regions" is treated as correct for all puzzles.
on /blog/108