mscroggs.co.uk
mscroggs.co.uk

subscribe

Comment

Comments

Comments in green were written by me. Comments in blue were not written by me.
For Day 23: "so that every 9×9 block of squares in the grid contains" perhaps should read "so that every 3×3 block of 9 squares in the grid contains"
Dr. Matrix
on /blog/111
   ×1            
@Dr. Matrix: Thanks, I've corrected it
Matthew
on /blog/111
               

Archive

Show me a random blog post
 2025 

Jan 2025

Christmas (2024) is over
Friendly squares
 2024 
▼ show ▼
 2023 
▼ show ▼
 2022 
▼ show ▼
 2021 
▼ show ▼
 2020 
▼ show ▼
 2019 
▼ show ▼
 2018 
▼ show ▼
 2017 
▼ show ▼
 2016 
▼ show ▼
 2015 
▼ show ▼
 2014 
▼ show ▼
 2013 
▼ show ▼
 2012 
▼ show ▼

Tags

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

Archive

Show me a random blog post
▼ show ▼
© Matthew Scroggs 2012–2025