Exer. n.39446 do lichess(2499elo)

[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "New game"] [Black "?"] [Result "*"] [FEN "r3k1nr/pp3ppp/3b1q2/3pNn2/5Q2/8/PPP2PPP/RNB1R1K1 w kq - 0 1"] [PlyCount "9"] [SetUp "1"] [Source "?"] [SourceDate "2016.07.23"] 1. Qa4+ b5 2. Qxb5+ Ke7 (2... Kf8 3. Nd7#) 3. Qd7+ Kf8 4. Qc8+ Ke7 (4... Qd8 5. Nd7#) (4... Rxc8 5. Nd7#) 5. Nc6# (5. Ng6#) *