Monochess – A chess variant with rule-bending action cards
Card-driven chess variant with custom engine handling illegal board states.

Chess with HP and abilities feels more like a tactics RPG than classic chess.
Chess variant enthusiasts, indie game developers
Chess variants · Final Fantasy Tactics · Into the Breach
There is no video explaining all the rules, but the current version is very similar to chess. These are the main things you need to know:
1) Standard attack - https://www.youtube.com/watch?v=OhGNNlnM7K8
2) Special abilities - https://www.youtube.com/watch?v=XbE_jL7RB0E
Here's the link - https://www.nichess.org/ (you can try it without making an account, just start a new game).
If anyone has any thoughts or suggestions, I'd love to hear them.
Card-driven chess variant with custom engine handling illegal board states.
1D chess is a known variant, and this implementation adds nothing new to it.
Twelve AI agents argue over every chess move using auction or voting strategies.
Full chess game state in pure CSS—no JS—which shouldn't be possible.
Vim-style chess with hidden engine evals forces intuition over calculation.
Chess960 with double randomization, but solving a problem for a tiny audience.