Caïssa Britannia, invented by Fergus Duniho in 2003, contains the Dragon (Alfilrider + Dabbabarider). A Dragon moves to precisely those squares that a Torch skips over. On [2021-02-24] Fergus Duniho wrote the following Comment to Bent Riders by Ralph Betza:

"Last night I was thinking of bent riders that are not bent in the sense of changing direction. I suppose they are among the 25 possibilities Betza mentions, but I don't think he elaborated on them. One piece I was thinking of would initially move as a Wazir, then if it continues, continue as a Dabbabbah-Rider. Unlike the Dabbabbah-Rider, this would not be color-bound. Another one would initially move as a Ferz, then if it continues, continue as an Alfil-Rider. Unlike the Alfil-Rider, this would be able to reach every space of the same color instead of just half of them. I was thinking I might call these the Shifty Rook and the Shifty Bishop and their compound the Shifty Queen. Has anyone used these pieces before?"

I fixed it, it's your turn. There is no castling here;)

I did some minor editing (fixed the header levels, changed the origin of the berolina pawn, shrank the custom setup image). The en passant rule "same as Horizon" should be explicitly spelled out on this page, please.

I still had to write a BadZone function for this one, despite my efforts with the captureMatrix parameter. Because the ban on capturing Kings with the capture move for divergent pieces is dependent on the move, not just on the piece type. XBetza can indicate a move can only capture royalty (k modifier), but not that a move can capture anything but royalty. I suppose I could make an XBetza extension for that, by adopting the convention that the combination kc means non-royal capture. This would otherwise be a useless combination, as c already includes capture of royals. So k becomes a kind of toggle modifier, which negates the possibility to capture royalty from what it would have been without its presence.

[Edit] This is achieved now, and the Diagram now is working without any custom scripting.