Quantum Chess Theory

Quantum chess is one of those intriguing ideas that appear on the CFAA radar every so often. The last time it featured as video of the month was Quantum Chess and AI (September 2020). Here's a more down-to-earth angle.

How Does Quantum Chess Work? (5:57) • '[Published on] Feb 15, 2025'

The description said,

Today, I show a new update to chess! This game features quantum chess with superposition, entanglement, and the observer effect! [...] It's a combination of chess in Ohio, Minecraft Block Battles in Chess, Anarchy Chess, ChatGPT Chess, Top Chess, Gotham Chess, Chess 2, 5D Chess, Open World Chess, and more! If you enjoy the chess memes YouTube shorts, like and subscribe!

That's all very nice, but I didn't understand the video, even after watching it twice. The missing bit in that description ('[...]') pointed to quantumrealmgames.com/play. Why not just go there and play for myself?

That also turned out to be easier said than done, because the site slowed my oldest PC -- the same PC that I use to write these blog posts -- to a crawl. It happened twice, on two different days, so I'm guessing that my PC and the site are not compatible.

For my next attempt, I'll publish this post, access the site from my newest PC, and add any fresh observations to the post. In the meantime, here are the 'HOW TO PLAY' basic instructions as copied from that Quantum Realm Games site.

Standard Move • Select the piece you want to move, then click the target square.

Split Move • Select the piece you want to move, then hold-click the first target, drag to the second, and release.

Merge Move • Hold-click the first piece, drag to the second piece, and release. Then select merge target.

Back in a jiffy...