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.

2024-12-13

@Seth Cohen: In response to my earlier comment, I solved it assuming it's correct as written, so I guess it's correct as written!

Seth Cohen
on /blog/111

×2

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

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

Archive

Show me a random blog post
▼ show ▼

© Matthew Scroggs 2012–2026