you must move the King into the other camp to be able to give check and checkmate
No, the piece giving check must be beyond the borderline. (The king is restricted to ranks 3-5). Two rooks on rows 5 and 6 could in principle perform the usual mating net. (This is unlikely to work readily, as the opponent can probably intervene other pieces rather than just walk the king to the edge.)
As is evident from the questions here, the rules should be stated more clearly. And the questions around motivation for players to make progress are valid in this very far-from-chess setting; probably the best thing is to throw together a Game Courier settings (no need to enforce rules yet) and invite a few people to play.
No, the piece giving check must be beyond the borderline. (The king is restricted to ranks 3-5). Two rooks on rows 5 and 6 could in principle perform the usual mating net. (This is unlikely to work readily, as the opponent can probably intervene other pieces rather than just walk the king to the edge.)
As is evident from the questions here, the rules should be stated more clearly. And the questions around motivation for players to make progress are valid in this very far-from-chess setting; probably the best thing is to throw together a Game Courier settings (no need to enforce rules yet) and invite a few people to play.