Chris Chradle wrote on Sun, May 6, 2018 08:15 PM UTC:Good ★★★★
Still two things: "The King may not move back over the river; however, he still delivers check backwards." When the black king is on f4, the white king can't move to f5 giving the king on f4 check (it would move into check itself). I think you mean that when there is a black king on f4, the white king can't move to f5 or e5.
On e1 and d8 must be generals in the starting position, musn't they?
Still two things: "The King may not move back over the river; however, he still delivers check backwards." When the black king is on f4, the white king can't move to f5 giving the king on f4 check (it would move into check itself). I think you mean that when there is a black king on f4, the white king can't move to f5 or e5.
On e1 and d8 must be generals in the starting position, musn't they?