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

Oh my goodness, this was so fun! Thanks for putting this together, I've never done it before but I think I'm gonna have to start doing it every year. 21 was a beast (my favourite though) and 19 was incredibly sneaky, but forshadowed excellently.

Robert
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

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

Archive

Show me a random blog post
▼ show ▼

© Matthew Scroggs 2012–2026