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Comments in green were written by me. Comments in blue were not written by me.
2015-12-09
"9 December
You start at A and are allowed to move either to the right or upwards.
How many different routes are there to get from A to B?"
is there supposed to be some picture going with this question?
Mike D
on
/blog/23
2015-12-14
@
Mike D
: There was a picture missing. It has now been corrected.
Matthew
on
/blog/23
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A nonogram alphabet
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How to write a crossnumber
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A regular expression Christmas puzzle
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Chalkdust issue 17
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Mathsteroids on hyperbolic surfaces
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The databet
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Off-by-one errors
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24 Hour Maths Game Show
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Approximating π
Feb 2022
Build your own MENACE
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2020
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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
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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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2018
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Christmas cross stitch
MENACE in fiction
Christmas card 2018
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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
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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
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Christmas (2016) is over
Video game surfaces
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Nov 2016
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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
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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
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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
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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
Tags
hyperbolic surfaces
graphs
chebyshev
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rust
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a gamut of games
convergence
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anscombe's quartet
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errors
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matt parker
golden spiral
hannah fry
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mathslogicbot
wave scattering
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stirling numbers
royal institution
alphabets
go
map projections
royal baby
kings
people maths
pokémon
news
gather town
sobolev spaces
gaussian elimination
bodmas
menace
realhats
stickers
weak imposition
coins
dates
binary
propositional calculus
the aperiodical
talking maths in public
matrices
folding tube maps
matrix of cofactors
edinburgh
coventry
platonic solids
game of life
european cup
harriss spiral
flexagons
wool
arithmetic
arrangement puzzles
programming
hexapawn
mathsjam
final fantasy
national lottery
christmas card
games
exponential growth
simultaneous equations
correlation
numbers
fractals
databet
pac-man
data
error bars
crochet
newcastle
thirteen
crosswords
misleading statistics
frobel
craft
london underground
nonograms
cambridge
warwick
zines
dinosaurs
phd
pokémon wordle
cross stitch
quadrilaterals
fence posts
rugby
graph theory
inline code
christmas
martin gardner
world cup
latex
wordle
football
finite group
probability
countdown
bempp
light
preconditioning
tennis
turtles
palindromes
guest posts
datasaurus dozen
dragon curves
recursion
approximation
statistics
chalkdust magazine
pi approximation day
live stream
asteroids
tetris
manchester
golden ratio
boundary element methods
squares
signorini conditions
big internet math-off
logo
reuleaux polygons
folding paper
oeis
tmip
24 hour maths
manchester science festival
partridge puzzle
Archive
Show me a random blog post
▼ show ▼
▲ hide ▲
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 -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
the aperiodical
map projections
stickers
pythagoras
captain scarlet
dragon curves
newcastle
simultaneous equations
crosswords
national lottery
speed
logo
hexapawn
big internet math-off
finite group
programming
harriss spiral
talking maths in public
thirteen
advent calendar
matt parker
estimation
pizza cutting
puzzles
pac-man
gather town
dates
signorini conditions
warwick
kenilworth
inverse matrices
standard deviation
data
bluesky
game show probability
error bars
interpolation
christmas
guest posts
tetris
pascal's triangle
chalkdust magazine
php
nonograms
24 hour maths
folding paper
sobolev spaces
convergence
binary
geometry
curvature
rust
approximation
frobel
radio 4
gaussian elimination
european cup
graph theory
royal institution
runge's phenomenon
folding tube maps
nine men's morris
countdown
kings
fence posts
crochet
sorting
errors
video games
stirling numbers
geogebra
alphabets
polynomials
youtube
palindromes
manchester
mathsjam
javascript
final fantasy
matrix of cofactors
friendly squares
asteroids
numerical analysis
cambridge
misleading statistics
weak imposition
bubble bobble
rugby
go
triangles
computational complexity
people maths
ucl
correlation
football
mathslogicbot
anscombe's quartet
wave scattering
realhats
dinosaurs
menace
weather station
pi
python
pi approximation day
turtles
coins
latex
chess
bots
arrangement puzzles
hats
platonic solids
golden spiral
books
games
machine learning
bodmas
graphs
databet
wordle
squares
crossnumber
fonts
zines
accuracy
hannah fry
preconditioning
probability
live stream
sport
hyperbolic surfaces
martin gardner
propositional calculus
dataset
logs
game of life
gerry anderson
edinburgh
reuleaux polygons
mean
exponential growth
golden ratio
numbers
world cup
oeis
phd
light
reddit
london underground
christmas card
statistics
regular expressions
matrix of minors
tennis
pokémon wordle
quadrilaterals
ternary
craft
data visualisation
finite element method
pokémon
crossnumbers
matrix multiplication
raspberry pi
determinants
datasaurus dozen
partridge puzzle
boundary element methods
noughts and crosses
trigonometry
logic
cross stitch
bempp
royal baby
london
recursion
matrices
braiding
wool
chebyshev
fractals
mathsteroids
tmip
sound
plastic ratio
draughts
coventry
rhombicuboctahedron
news
manchester science festival
electromagnetic field
a gamut of games
flexagons
inline code
arithmetic
© Matthew Scroggs 2012–2026
You start at A and are allowed to move either to the right or upwards.
How many different routes are there to get from A to B?"
is there supposed to be some picture going with this question?
on /blog/23