💡📝H. G. Muller wrote on Fri, Apr 30, 2021 09:49 AM UTC:
I now removed the ability to always castle with a Rook (irrespecive of its location on the board). I originally added that to handle Omega Chess. But after the diagram supported jO this was no longer needed. So I changed the King's move to KisjO2 in the diagram I had posted for Omega Chess. I don't think there were any other diagrams that needed castling with a non-corner pieces, and were relying on this 'Rook exception'.
So you can change the Rook move back to R, now, without the diagram highlighting a spurious castling.
The way it works now is that the diagram locates the castling piece, and then, on the same rank, scans the board to the left and right until it reaches an edge or a hole. Then it scans back from there in the direction of the castling piece to find a non-empty square in the initial position ('farthest reachable piece'). This would be the castling partner for a plain O castling. If it should be the piece one square further inward, one should use jO.
I now removed the ability to always castle with a Rook (irrespecive of its location on the board). I originally added that to handle Omega Chess. But after the diagram supported jO this was no longer needed. So I changed the King's move to KisjO2 in the diagram I had posted for Omega Chess. I don't think there were any other diagrams that needed castling with a non-corner pieces, and were relying on this 'Rook exception'.
So you can change the Rook move back to R, now, without the diagram highlighting a spurious castling.
The way it works now is that the diagram locates the castling piece, and then, on the same rank, scans the board to the left and right until it reaches an edge or a hole. Then it scans back from there in the direction of the castling piece to find a non-empty square in the initial position ('farthest reachable piece'). This would be the castling partner for a plain O castling. If it should be the piece one square further inward, one should use jO.