mscroggs.co.uk
mscroggs.co.uk

subscribe

Comment

Comments

Comments in green were written by me. Comments in blue were not written by me.
Great puzzle problems! Hint on #9: try starting with an analogous problem using smaller numbers (e.g. 3a + 10b). This helped me to see what I had to do more generally.
Noah
on /blog/59
   ×1            

Archive

Show me a random blog post
 2026 

May 2026

World Cup stickers 2026

Apr 2026

A new puzzle every day
Mixing Wordle with other games

Feb 2026

Christmas (2025) is over
 2025 

Dec 2025

Christmas card 2025

Nov 2025

Christmas (2025) is coming!

Sep 2025

The partridge puzzle

Aug 2025

TMiP 2025 puzzle hunt

Jun 2025

A nonogram alphabet

Mar 2025

How to write a crossnumber

Jan 2025

Christmas (2024) is over
Friendly squares
 2024 

Dec 2024

A regular expression Christmas puzzle
Christmas card 2024

Nov 2024

Christmas (2024) is coming!

Feb 2024

Zines, pt. 2

Jan 2024

Christmas (2023) is over
 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

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

Archive

Show me a random blog post
▼ show ▼
© Matthew Scroggs 2012–2026