试一试不看答案

今天贴一个简单残局. 也不全是简单吧? 在西欧地方, 人们能解答这残局者还不多的. 可以向周边的人试一试 (不看答案).


Today we post a little puzzle, mentioned by GM Wang Jialiang in one of his Endgame books. Pieces are few on the board. Red to play and win.