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

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

Archive

Show me a random blog post
▼ show ▼

© Matthew Scroggs 2012–2026