[Event "No. 4623 Tactic: Chess, Combination"] [Site "Corr."] [Round "0"] [White "Jonsson"] [Black "Koskinen"] [ECO "C63"] [Opening "Spanish: Schliemann, 4.Nc3 Nd4"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. Nc3 Nd4 5. Ba4 Nf6 6. O-O Bc5 7. Nxe5 O-O 8. exf5 d5 9. Ne2 Qd6 10. Nxd4 Bxd4 11. Nf3 Ng4 12. c3 Rxf5 13. cxd4 Rxf3 14. g3 Nxh2 15. d3 {Diagram} Rxg3+ 16. fxg3 Qxg3+ 17. Kh1 Qh3 18. Kg1 Bg4 19. Qe1 Bf3 {!} 20. Qf2 Ng4 *