[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "White to play"] [Black "?"] [Result "*"] [Annotator "peter"] [SetUp "1"] [FEN "5k2/5p2/2K2P2/p3Q3/1q5p/1P6/P7/8 w - - 0 1"] [PlyCount "9"] [EventDate "1988.06.??"] [EventType "tourn"] [EventRounds "15"] [EventCategory "15"] [SourceVersionDate "2020.04.01"] {[#]} 1. a3 {This forces the black queen to relinquish control of a key square. } Qxb3 (1... Qxa3 2. Qb8#) (1... Qc3+ 2. Qxc3 h3 3. Qg3 h2 4. Qg7+ Ke8 5. Qg8#) 2. Qc5+ Kg8 3. Qg5+ Kf8 4. Qg7+ Ke8 5. Qg8# *