Hi Puzzlers, Ken asked about a possible additional solution to Problem 21 (the FEN and answer are reproduced at the end of this message). He wondered why Black could not play: 1... Rxg3+ as the first move instead of the posted solution. I think this is a good question and others may have the same or similar questions. Since this is a chess discussion list, maybe we should discuss the question. Would anyone like to comment on an answer to Ken's question. I have my own answer, but I will wait a bit to give mine. Problem 21: 7k/ 1bpp2p1/ 3bp3/ p4B2/ 2P5/ P3BrPq/ 1PQ2P1P/ 4RRK1 Points 4 Black mates in two. Solution: 1... Qg2+ 2. Kxg2 Rxg3#