Four knights vs queen challenge
 
It is a seven-piece ending over which Troitzky once toiled. In the meantime endgame databases have mastered it and can solve billions of non-trivial positions, each in an instant. But can a computer program be taught to generate interesting studies or problems with the given material? AI researcher Dr Azlan Iqbal has instructed his software to try, and it has produced a mate-in-five. We ask our readers: can you do better?