A real time chess variant created around 2001 by Shizmoo games. It was shut down somewhere around 2007. All the pieces can move at once, but after you move a piece it must wait a little while before it can move again.
If opposing pieces are currently moving or not, the piece which moved first kills the other piece and you will continue moving. If you collide with you will.
There are two modes, "standard" and "lightning". In standard the pieces take 10 seconds to recharge, and move one square per second. In lightning they pieces take 2 second to recharge, and one square every fifth of a second (five times faster than standard).
You can see most of the advanced tactics on the tactics page. In general, it's that you must keep in mind which pieces are currently recharging, and the timing of how long it will take pieces to get to where they are going. Remeber, the board can change dramtically by the time your move even finishes.
Just like it sounds, four players at once, all attacking each other. In normal chess this would be quite boring. And in fact it is pretty boring on the standard speed in Kung Fu Chess. On lightning speed, however, it created a chaotic, dynamic, fast paced game.
Keep with the martial arts themes, players above certain ratings thresholds are given a "belt" as a reward. The Green belt signifies a provisional rating.
This game is free to play, with no ads, keeping with the lichess model of pure free and open source software. I will never put ads or charge for special features.