[Event "Stockholm, 1919"] [White "Efim Bogoljubov"] [Black "Rudolf Spielmann"] [FEN "3rkq1r/1pQ2p1p/p3bPp1/3pR3/8/8/PPP2PP1/1K1R4 w - - 1 0"] %Hidden=1 1. Rdxd5 Rxd5 2. Rxd5 Qd6 3. Qxd6 Bxd5 4. Qe7#