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

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

Archive

Show me a random blog post
▼ show ▼

© Matthew Scroggs 2012–2026