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.

2025-12-25

@Aisha: Hm, I used exactly the same method for both of these days. I'm not sure if it lends itself to a nice clean formula, but it might! I'll share my approach after the contest is over!

Seth Cohen
on /blog/120

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

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

Archive

Show me a random blog post
▼ show ▼

© Matthew Scroggs 2012–2026