[Event "Goteborg, 1920"] [White "Ernst Jacobson"] [Black "Heinrich Von Hennig"] [FEN "4b3/pkb5/1pp1Bp2/4pPp1/PP2P2r/2PQBq2/8/2KR4 w - - 1 0"] %Hidden=1 1. Qa6+ Ka8 2. Rd8+ Bb8 3. Rxb8+ Kxb8 4. Qc8#