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.

2020-12-25

@Dean: you can also go through each answer one at a time and change a digit; if the number of wrong answers goes up then your answer for that question was correct

×1

×1

2020-12-25

@A: Aha, I should have thought of this! Puzzles completed :-)

(anonymous)
on /blog/86

×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

Jan 2024

Christmas (2023) is over

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

Tags

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

Archive

Show me a random blog post
▼ show ▼

© Matthew Scroggs 2012–2026