Chess Problem Definitions

Helpmate in n moves. Black plays first and co-operates with White to enable White to mate on his (White's) nth move. To solve a helpmate you should give all moves for each side in each solution.

Serieshelpmate in n moves. Black (playing alone) plays a sequence of n moves to reach a position where White can mate in 1. Black may not walk into check at any stage and is only allowed to give check on the last move of the sequence. To solve a serieshelpmate give all of Black's moves and the White mating move..