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.

2016-07-14

@stephan: It looks like the code I wrote to check the solutions were unique contained errors. This might explain why first question was very difficult to solve with logic alone.

Matthew
on /blog/24

×1

Archive

Show me a random blog post

2025

Jan 2025

Christmas (2024) is over
Friendly squares

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

Tags

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

Archive

Show me a random blog post
▼ show ▼

© Matthew Scroggs 2012–2025