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.

2023-12-21

@Robert Brady: As day 9 suggests, not all the clues are necessarily true. The final three clues should help clear this up...

Matthew
on /blog/107

×2

×4

×2

×2

×2

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

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

Archive

Show me a random blog post
▼ show ▼

© Matthew Scroggs 2012–2025