mscroggs.co.uk
mscroggs.co.uk

subscribe

Comment

Comments

Comments in green were written by me. Comments in blue were not written by me.
In todays example should both digits in the row of 2 be zeros? If they should be ones then why?
Bob
on /blog/120
               
@Bob: they were meant to be zeros, I've just made a hasty edit...
Matthew
on /blog/120
            ×1   

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 ▼
 2022 
▼ show ▼
 2021 
▼ show ▼
 2020 
▼ show ▼
 2019 
▼ show ▼
 2018 
▼ show ▼
 2017 
▼ show ▼
 2016 
▼ show ▼
 2015 
▼ show ▼
 2014 
▼ show ▼
 2013 
▼ show ▼
 2012 
▼ show ▼

Tags

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

Archive

Show me a random blog post
▼ show ▼
© Matthew Scroggs 2012–2026