Seasons

There's a bit of the board that doesn't show up.

Am I playing against all 3 others?

Oh...I jumped out of teh game by mistake!

(2nd game) Hey, the blue king didn't move out of check!

Does that mean he's on my side? Too bad, I've utterly mauled his side...

The blue king acts impervious to check!

As does the violet king... I'm afraid there are a few bugs in the program. Interesting, though!

You have to take the other kings, and once you have then all their pieces become yours. I must tell BJ to squeeze a synopsis of the rules in there somewhere (but he hasn't left a lot of space for them!)
You can play any (or all) of the sides by selecting them in the table at the bottom.

I see. Got to run right now, will try later. A couple or rows on the right weren't visible, which introduced a certain element of chance!

Oops! It's fixed now.

f3

fxe3

You have to take the other kings, and once you have then all their pieces become yours.

Oops! Sorry - that was another applet entirely (there are several variations out there.)
It's blue v. red team play, and you have to put both the red kings in mate to win. Once you mate one, his pieces can't move or be taken (they go black,) so you can go after the other - but be careful not to unmate him, or he's back in the game! (And obviously, the red team are trying to do the same to you!)
You'll probably find that easier to coordinate if you play both the blue players.