[Event "DSB-Frauenkader-Challenge 2021"] [White "Ziegenfuss,Antonia"] [Black "Paehtz,Elisabeth"] [Site "Magdeburg"] [Round "3.4"] [Annotator "TA"] [Result "1-0"] [Date "2021.04.07"] [WhiteElo "2101"] [BlackElo "2467"] [PlyCount "69"] 1. c4 {} c5 2. Nc3 Nc6 3. Nf3 g6 4. g3 Bg7 5. Bg2 e6 6. e3 Nge7 7. 0-0 Nf5 8. e4 {A37: Symmetrical English vs ...g6: 4 Bg2 Bg7 5 Nf3.} Nfe7 {[#]} 9. d4 $146 ({Predecessor:} 9. d3 a6 10. Be3 Nd4 11. Nd2 0-0 12. f4 d6 13. Nf3 Nec6 14. Qd2 Rb8 15. Ne2 b5 16. Bxd4 Nxd4 17. Nexd4 cxd4 {0-1 (61) Bosenius,B-Kuznetsov,A Winnipeg 1985} )Nxd4 10. Nxd4 {The position is equal.} cxd4 11. Nb5 Qb6 12. a4 $1 { White has compensation.} 0-0 13. a5 Qc6 (13... Qd8 $1 $14 )14. b3 $1 $16 {Black must now prevent e5.} d5 (14... a6 $142 15. Nxd4 Qc7 )15. Ba3 ({White should try} 15. exd5 $1 $16 Qd7 16. d6 (16. Nxd4 exd5 17. cxd5 Nxd5 $14 ))dxc4 $14 16. Bxe7 Re8 {This costs Black the game.} (16... Qxb5 $14 17. Bxf8 Kxf8 )17. Nxd4 $18 Bxd4 {[#]} 18. e5 $1 Qd7 19. Bf6 {And now Qc1! would win.} Bxa1 20. Qxa1 { Strongly threatening Qc1.} h6 $2 ({Avoid the trap} 20... cxb3 $2 21. Qc1 $18 )(20... Qd2 )21. Qc1 Kh7 22. Rd1 Rb8 23. Rxd7 Bxd7 24. bxc4 Rec8 25. Qf4 b5 26. Be7 Kg7 27. Be4 {Intending Bxg6! and mate.} Rxc4 28. Qf6+ Kg8 29. Bxg6 Be8 {[#] } 30. Bh5 (30. Bc2 $142 $1 {} Rxc2 (30... Rb7 31. Qxh6 )31. Qxh6 Rc1+ 32. Kg2 f5 33. exf6 Bc6+ 34. Kh3 Bg2+ 35. Kxg2 )Rb7 31. Bd6 Bc6 32. Qxh6 {White mates.} Ra4 33. f3 Rd7 34. Bf8 {} f5 35. exf6 { Weighted Error Value: White=0.07/Black=0.87} 1-0