88. model mate, by the horse

Helpmates in xiangqi

4 moves

Black moves first and both sides cooperate: Black, Red, Black, Red, and Red's second move mates. Black has 9 legal first moves and exactly one of them works. 8 pieces, Black 8 to Red 6 in material, mate by the horse. Themes: pure mate, model mate, a piece already in the way, the…