Lockdown Math

I was bored during lockdown, so I decided to start a blog about my random thoughts about math. It contains some solutions to math problems, and some 'simple' applications of math.

Wednesday, 3 July 2024

Magical coin

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Magical coin setup You are traveling home on a gloomy night in the dead of winter. You clutch the edge of your cloak with your frozen fin...

Thursday, 15 December 2022

Listen to the sea

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Rockstar is an esoteric programming language that creates code that looks like song lyrics. I tried to use it to solve this code puzzle: ...

Monday, 25 April 2022

Lunar Lockout

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I made a small web applet in which you can play Lunar Lockout . The first 40 puzzles are the official puzzles by the makers of the game, an...

Tuesday, 29 March 2022

Light switch puzzle

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Thomas has a row of lamps, of odd length. Each lamp has two possible states: on or off. Next to each lamp, there is a switch. If a lamp is ...

Friday, 28 January 2022

Wordle strategy

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Wordle is a popular word game similar to mastermind. If you do not know how to play, the linked website explains it better than I can. Th...

Tuesday, 21 December 2021

Advent of code 2021 day 8, seven segment displays, regex only solution.

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I made a video about a specific technique to solve this puzzle using fingerprinting a while ago. This technique is more efficient and fas...

Saturday, 27 November 2021

Corona tests vs symptoms

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corona Who is more likely to have covid? Someone who has a negative selftest, but has cold-like symptoms, or someone ...

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