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.

2021-12-15

I just realised that the advent calendar itself is a magic square, nice touch.

Alex
on /blog/91

×2

×1

×1

Archive

Show me a random blog post

2025

Mar 2025

How to write a crossnumber

Jan 2025

Christmas (2024) is over
Friendly squares

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

Tags

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

Archive

Show me a random blog post
▼ show ▼

© Matthew Scroggs 2012–2025