[Event "Zadachi i Etyudy"] [Site "?"] [Date "2017.??.??"] [Round "?"] [White "(6) Valery Kalashnikov (RUS)"] [Black "?"] [Result "1/2-1/2"] [SetUp "1"] [FEN "6k1/3R4/5P2/4N3/8/1b6/p7/1RK1b2r w - - 0 1"] [PlyCount "25"] [EventDate "2017.??.??"] 1. Rg7+ Kf8 2. Ng6+ Ke8 3. f7+ Bxf7 4. Rb8+ Kd7 5. Rxf7+ Kd6 (5... Ke6 6. Re7+ Kf5 7. Rb5+ Kxg6 8. Re6+ Kf7 9. Ra6 Ba5+ 10. Kc2 Rc1+ 11. Kb3 a1=Q 12. Rb7+ Ke8 13. Ra8+ Rc8 14. Rxc8+ Bd8 15. Rbb8 $11) 6. Rd8+ (6. Ra8 $2 Ba5+ 7. Kc2 Rc1+ 8. Kxc1 a1=Q+ 9. Kc2 Qa2+ $19) (6. Rb6+ $2 Kc5 7. Ra6 Ba5+ 8. Kc2 Rh2+ 9. Kb3 a1=N+ 10. Ka3 Bb4+ 11. Ka4 Ra2#) 6... Ke6 7. Re7+ Kf5 8. Rd5+ (8. Kb2 $2 Rh2+ 9. Rd2 Rxd2+ 10. Ka1 Bf2 11. Nh4+ Kf6 12. Nf5 Bg3 13. Nxg3 Kxe7 $19) (8. Re5+ $2 Kxg6 9. Kb2 Rh2+ 10. Rd2 Bxd2 11. Kxa2 Bc3+ $19) 8... Kxg6 9. Rd6+ Kg5 10. Rg7+ (10. Kb2 $2 Rh2+ 11. Rd2 Bxd2 12. Kxa2 Bb4+ $19) (10. Rd5+ $2 Kf6 $19) ( 10. Re5+ $2 Kf4 $19) 10... Kf5 11. Rf7+ Ke5 12. Kb2 Rh2+ 13. Rd2 1/2-1/2