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.

2024-01-07

In your solution for the 12th, I think there's still a little work to do: to check that the answer is the smallest integer that works. For that, because 241 is prime, you only have a handful of values to check.

Ben Reiniger
on /blog/109

×4

×4

×4

×4

×4

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

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

Archive

Show me a random blog post
▼ show ▼

© Matthew Scroggs 2012–2025