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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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Happy -6+τφ Approximation Day!
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A surprising fact about quadrilaterals
Interesting tautologies
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Log-scaled axes
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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
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Visualising MENACE's learning
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A non-converging LaTeX document
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Big Internet Math-Off stickers 2019
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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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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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Logical contradictions
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Tube map kaleidocycles
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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
Design your own flexagon
Jan 2015
Tube map Platonic solids, pt. 3
2014
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Logic bot
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Electromagnetic Field talk
Jun 2014
Tennis maths
May 2014
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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Nov 2012
Tube map Platonic solids, pt. 2
Oct 2012
Tube map Platonic solids
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trigonometry
folding paper
chalkdust magazine
big internet math-off
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datasaurus dozen
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menace
pokémon wordle
javascript
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anscombe's quartet
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hannah fry
graphs
pizza cutting
correlation
logo
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wordle
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preconditioning
misleading statistics
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the aperiodical
hats
radio 4
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ucl
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fonts
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stickers
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sobolev spaces
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realhats
statistics
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logs
stirling numbers
fractals
estimation
coventry
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wave scattering
folding tube maps
numbers
php
matrix of minors
palindromes
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map projections
matrix multiplication
alphabets
arithmetic
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bots
crossnumber
talking maths in public
asteroids
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go
youtube
weak imposition
pi
fence posts
interpolation
countdown
newcastle
matrix of cofactors
advent calendar
squares
sorting
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harriss spiral
platonic solids
friendly squares
mathslogicbot
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ternary
approximation
coins
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pi approximation day
triangles
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error bars
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partridge puzzle
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warwick
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logic
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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 -6+τφ 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
dates
preconditioning
python
coventry
anscombe's quartet
map projections
noughts and crosses
geometry
game of life
advent calendar
databet
news
royal institution
convergence
friendly squares
folding paper
standard deviation
electromagnetic field
estimation
arrangement puzzles
weather station
fractals
data
final fantasy
london
wordle
golden spiral
errors
reuleaux polygons
asteroids
gerry anderson
craft
accuracy
hyperbolic surfaces
machine learning
approximation
turtles
exponential growth
dataset
edinburgh
geogebra
fence posts
statistics
go
numerical analysis
manchester science festival
european cup
palindromes
runge's phenomenon
world cup
24 hour maths
bempp
newcastle
probability
stickers
crosswords
raspberry pi
dragon curves
tmip
pokémon
numbers
partridge puzzle
christmas
inline code
pokémon wordle
guest posts
graph theory
polynomials
chalkdust magazine
coins
interpolation
kenilworth
computational complexity
gaussian elimination
oeis
a gamut of games
quadrilaterals
nine men's morris
games
cambridge
frobel
radio 4
data visualisation
misleading statistics
fonts
tetris
finite group
countdown
programming
bubble bobble
zines
rugby
hannah fry
martin gardner
curvature
alphabets
chebyshev
dinosaurs
hats
sobolev spaces
flexagons
mathsteroids
books
bluesky
reddit
royal baby
stirling numbers
thirteen
chess
london underground
matrices
sorting
bots
crochet
wave scattering
light
recursion
sound
video games
golden ratio
draughts
folding tube maps
crossnumbers
national lottery
realhats
pi approximation day
arithmetic
braiding
determinants
pythagoras
ucl
error bars
cross stitch
rust
triangles
warwick
mathsjam
logs
menace
mean
hexapawn
matrix of cofactors
inverse matrices
captain scarlet
big internet math-off
christmas card
pac-man
game show probability
datasaurus dozen
mathslogicbot
phd
pi
gather town
correlation
binary
live stream
pascal's triangle
ternary
crossnumber
matrix multiplication
graphs
javascript
boundary element methods
propositional calculus
logo
sport
bodmas
matt parker
manchester
squares
kings
finite element method
tennis
simultaneous equations
php
weak imposition
the aperiodical
matrix of minors
wool
puzzles
football
harriss spiral
people maths
trigonometry
speed
platonic solids
youtube
logic
talking maths in public
regular expressions
latex
rhombicuboctahedron
pizza cutting
signorini conditions
plastic ratio
nonograms
© 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