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Show HN: Radioactive Pooping Knights

patrickdavey Saturday, December 06, 2025

I've been having fun building out a really simple chess learning app for my daughter (7). It started with just "maze like" puzzles [1] and I've added a few more.

This "radioactive pooping knights" idea came from an Irish primary school chess website [2]. Really simple idea, two knights moving around the board leaving poo behind... Don't be the one forced to step on it.

* best played with sound on.

[1]. https://minichessgames.com/#/movement/knight

[2]. https://ficheall.ie/

*highly subjective, may not be better for you to play with sound at all ;)

p.s. Any "buy me a coffee" goes to my daughter. Annoyingly they only pay out once you get above $10 USD and I think it's currently sitting at 9.85 or something!

Summary
The article discusses a unique chess variant called 'Pooping Knights', where knights can 'poop' on adjacent squares, altering the movement of other pieces. The game offers a fresh take on the traditional chess experience, with new strategic considerations and challenges for players.
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Summary
minichessgames.com
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