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.

2016-01-16

Are you sure http://www.mscroggs.co.uk/puzzles/126 have unique solutions. See e.g. http://cryptarithms.awardspace.us/solv... which gives lots of solutions

stephan
on /blog/24

2016-07-14

@stephan: It looks like the code I wrote to check the solutions were unique contained errors. This might explain why first question was very difficult to solve with logic alone.

Matthew
on /blog/24

×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

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

Archive

Show me a random blog post
▼ show ▼

© Matthew Scroggs 2012–2026