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.

2025-12-30

Another great collection of puzzles, thank you! 21 was, indeed, a challenge. Perms and combs got there quite quickly after a long time of not getting there :) Happy holidays everyone!

Kirsty
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

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

Archive

Show me a random blog post
▼ show ▼

© Matthew Scroggs 2012–2026