Single Comment

To prevent a 'mate in 4' thing where someone could make multiple consecutive moves on the same decision tree sets of boards, couldn't the game be restricted where you are not allowed to make two straight moves on a board, without your opponent making any?

An idea would be, as I see it (to prevent one side from making a ton of moves without their opponent moving):
1. Starting player makes two moves, creating two boards, with old board disappearing.
2 Their opponent picks position and moves two, destroying the old position, and sending two back their opponent's way.
3. The starting player then ends up looking at three possible positions, creates two new ones, and sends them back to his opponent.
4. Rinse and repeat until there is a winner in one game (capture enemy king).
5. Of course, no two identical board conditions are allowed to be in play at the same time.

We can go 'Heraclitian-Calvinball' by allowing different rule conditions per board.  I think this may address some early concerns, while maybe not being exactly what the original creator intended.