mscroggs
.co.uk
mscroggs
.co.uk
blog
puzzles
academic
talks
contact
subscribe
↓ ☰ ↓
subscribe
Loading image...
Comment
Comments
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
Archive
Show me a random blog post
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 -15+3τ-φ-√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
ternary
24 hour maths
mean
mathsteroids
anscombe's quartet
coventry
matrix of cofactors
london
arithmetic
gather town
bluesky
newcastle
matrix of minors
bodmas
stickers
approximation
dragon curves
inline code
reuleaux polygons
rust
data visualisation
dinosaurs
craft
hexapawn
speed
countdown
correlation
christmas card
fence posts
manchester science festival
misleading statistics
wordle
frobel
crossnumber
interpolation
determinants
logs
stirling numbers
regular expressions
squares
pythagoras
go
geogebra
friendly squares
hats
javascript
asteroids
world cup
partridge puzzle
fonts
error bars
kenilworth
mathsjam
folding paper
zines
talking maths in public
dates
mathslogicbot
kings
exponential growth
finite group
standard deviation
data
a gamut of games
edinburgh
bempp
inverse matrices
accuracy
sobolev spaces
people maths
boundary element methods
finite element method
big internet math-off
convergence
polynomials
pokémon
cross stitch
oeis
graph theory
python
runge's phenomenon
fractals
realhats
triangles
sport
weak imposition
logo
coins
captain scarlet
the aperiodical
platonic solids
wave scattering
logic
hannah fry
football
bubble bobble
european cup
gaussian elimination
thirteen
nonograms
weather station
royal baby
computational complexity
binary
curvature
national lottery
crochet
christmas
puzzles
graphs
cambridge
wool
gerry anderson
game of life
matt parker
nine men's morris
matrices
braiding
bots
harriss spiral
chess
video games
arrangement puzzles
tmip
pizza cutting
london underground
final fantasy
manchester
noughts and crosses
programming
folding tube maps
estimation
probability
menace
numerical analysis
pi approximation day
tennis
tetris
preconditioning
raspberry pi
latex
sound
radio 4
quadrilaterals
news
golden spiral
games
databet
electromagnetic field
palindromes
php
live stream
crossnumbers
martin gardner
geometry
light
pascal's triangle
reddit
hyperbolic surfaces
ucl
chalkdust magazine
warwick
guest posts
advent calendar
rhombicuboctahedron
recursion
game show probability
royal institution
matrix multiplication
phd
dataset
trigonometry
rugby
errors
crosswords
draughts
youtube
datasaurus dozen
pac-man
propositional calculus
statistics
map projections
signorini conditions
books
golden ratio
pi
numbers
pokémon wordle
sorting
machine learning
simultaneous equations
plastic ratio
alphabets
chebyshev
flexagons
turtles
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 -15+3τ-φ-√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
sport
stickers
speed
boundary element methods
cambridge
latex
pi approximation day
pythagoras
hats
platonic solids
errors
statistics
exponential growth
final fantasy
folding paper
chalkdust magazine
harriss spiral
weather station
craft
geogebra
kings
bubble bobble
numbers
golden spiral
data visualisation
fractals
palindromes
talking maths in public
oeis
flexagons
bempp
london underground
golden ratio
world cup
turtles
dates
captain scarlet
fence posts
games
standard deviation
royal institution
crossnumber
puzzles
bluesky
hannah fry
nine men's morris
rust
game show probability
mathsjam
a gamut of games
map projections
draughts
plastic ratio
sorting
advent calendar
kenilworth
computational complexity
pi
news
misleading statistics
menace
fonts
anscombe's quartet
trigonometry
tennis
logic
crossnumbers
pokémon
folding tube maps
matt parker
dragon curves
runge's phenomenon
national lottery
determinants
preconditioning
light
rugby
cross stitch
ucl
arithmetic
wave scattering
bots
zines
quadrilaterals
asteroids
manchester
interpolation
chess
christmas
noughts and crosses
game of life
edinburgh
raspberry pi
simultaneous equations
guest posts
chebyshev
live stream
christmas card
frobel
matrix of minors
recursion
hexapawn
football
correlation
tetris
estimation
machine learning
squares
crochet
gerry anderson
php
signorini conditions
reddit
finite element method
reuleaux polygons
martin gardner
graphs
polynomials
hyperbolic surfaces
tmip
inline code
finite group
databet
numerical analysis
convergence
graph theory
error bars
the aperiodical
dinosaurs
gaussian elimination
braiding
geometry
mathslogicbot
alphabets
logs
probability
programming
pac-man
wordle
newcastle
european cup
ternary
london
rhombicuboctahedron
mean
python
data
regular expressions
thirteen
accuracy
sobolev spaces
arrangement puzzles
manchester science festival
mathsteroids
pokémon wordle
countdown
coins
warwick
coventry
datasaurus dozen
approximation
realhats
matrix multiplication
phd
propositional calculus
big internet math-off
friendly squares
pizza cutting
stirling numbers
nonograms
pascal's triangle
dataset
radio 4
gather town
matrices
weak imposition
sound
partridge puzzle
inverse matrices
bodmas
logo
crosswords
royal baby
triangles
youtube
electromagnetic field
wool
24 hour maths
binary
curvature
people maths
video games
javascript
matrix of cofactors
books
go
© 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