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.

2023-01-09

In question 3 the sum of the red numbers is 369, is there a typo?

(anonymous)
on /blog/100

×1

×2

×2

×2

×2

2023-01-09

@(anonymous): There was a typo - I've just corrected it

Matthew
on /blog/100

×3

×3

×3

×3

×3

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

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

Archive

Show me a random blog post
▼ show ▼

© Matthew Scroggs 2012–2026