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.

2021-12-16

I think questions 11 and 12 could use some some clarification as to whether or not single-digit numbers should count.

Dan
on /blog/92

2021-12-16

@Dan: one digit numbers count

Matthew
on /blog/92

×1

2021-12-16

@Matthew: Thanks, I figured they did but it was good to get confirmation.

Dan
on /blog/92

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

Jan 2024

Christmas (2023) is over

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

Tags

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

Archive

Show me a random blog post
▼ show ▼

© Matthew Scroggs 2012–2026