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.

2023-12-26

This year felt much more difficult than previous years. Definitely not complaining, especially with how day 23 felt completely impossible until it wasn't -- that feeling is why I love these sorts of puzzles. Cheers!

Eric
on /blog/107

×2

×5

×5

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

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

Archive

Show me a random blog post
▼ show ▼

© Matthew Scroggs 2012–2025