mscroggs.co.uk

mscroggs.co.uk

blog puzzles academic talks contact subscribe ↓ ☰ ↓

Comment

Comments

Comments in green were written by me. Comments in blue were not written by me.

2025-06-09

Nice argument for always solvable! I'm wondering if it also applies on a "2D" message, i.e. multiple rows of letters

Dave Budd
on /blog/117

2025-06-09

@Dave Budd: I would guess that it doesn't unless I got very lucky, but I should write a script and check...

Matthew
on /blog/117

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

Jan 2024

Christmas (2023) is over

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

Tags

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

Archive

Show me a random blog post
▼ show ▼

© Matthew Scroggs 2012–2026