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.

2018-12-16

The script for checking the answers doesn't work properly

Carmel
on /blog/59

2018-12-17

@Carmel: It's not meant to check your answers. It only shows up red if the number you enter cannot be split into valid pairs (eg the number has an odd number of digits or one of the pairs of digits is greater than 20).

Matthew
on /blog/59

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

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

Archive

Show me a random blog post
▼ show ▼

© Matthew Scroggs 2012–2026