I found a position that takes 78,352 moves and can't find a shorter combo. Both white bishops end up on dark squares. You have to castle at just the right momen

I found a position that takes 78,352 moves and can't find a shorter combo. Both white bishops end up on dark squares. You have to castle at just the right moment. There is a race condition with a window far too narrow to be noticeable in any normal play, but a timing analysis uncovered it. There may be more.