Is it known in advance which King is royal, or is this hidden too?
No. This is hidden but it is only revealed when that King is involved in a capture.
Can the royal King have any charge?
The white Royal King has a positive charge, while the black Royal King has a negative charge.
What happens when your royal King gets captured, or destroys itself in the attempt to capture on a square with an unfavorable field? It seems that moving your royal King to a square with a field where the capturing piece would disappear makes it immune to check or checkmate.
Neutral charged pieces can still deliver checkmate.
Charges and fields are only revealed when a capture is attempted?
Rules like this tend to make a game very hard for humans, while it would stay easy for computers
You are right.
A straightforward method would be to cover all squares with tiles that have the field written on the bottom. The game would be a lot more user-friendly if tiles would remain flipped after having been revealed.
This looks like a great idea. I'm going to update the rules right now.
No. This is hidden but it is only revealed when that King is involved in a capture.
The white Royal King has a positive charge, while the black Royal King has a negative charge.
Neutral charged pieces can still deliver checkmate.
You are right.
This looks like a great idea. I'm going to update the rules right now.