I saw some videos featuring a chess variant called Quantum Chess on YouTube. It looked very interesting to me, so I decided to try to find it online for free, but I couldn’t. Does anyone know of such a place?
Well, if you Google “Quantum Chess” you immediately come across this result: http://research.cs.queensu.ca/Parallel/QuantumChess/QuantumChess.html
The page has a link to where to where you can play it here, although requires a plug-in to play, i.e. you have to play it on the computer.
UPDATE: Seeing as that link does not work, I think that it is suffice to say that it is impossible to play Quantum Chess anywhere online for free.
Try truly quantum chess. It is an implementation of quantum chess by yours truly, the rules are sligtly different from the rules of the steam version though, for example, pawns can quantum move.