I haven't played 4PC for a long time, came back to this and didn't read the rules properly before playing. The first game I thought it was a glitch and moved my queen next to it to try and take. The king took my queen and after that I sobered up but still lost the game. I got the hang of it after though.
Although the first game with the rule there was kind of rocky, I'm actually glad for it, and I think it makes 4 player chess better. Before whoever could take the king was largely on who had the luck to be next to the player who resigned, and a 20 point difference could make or break the end results.
Now, with this rule, whoever is adjacent to the resigned player would still be lucky, but it takes slightly more to checkmate. (2 pieces, plus the wandering part). Which hopefully means players focus more on the game and leave the kings later, or have to use more tact to checkmate. Which makes it a little less on luck, more on skill and fairer for everyone. I'm all in favour of this, even though my start with it was rocky XD
DKW is now enabled (included) by default.
https://www.chess.com/clubs/forum/view/changelog-1