[Event "Club Championship 2025/6"]
[Site "?"]
[Date "10.9.2025"]
[Round "Rd2"]
[White "Cosens, Paul"]
[Black "Van Kemenade, Rudy"]
[Result "1-0"]
[Annotator "Rudy Van Kemenade"]
[ECO "B00"]
[WhiteElo "1622"]
[BlackElo "1997"]

1. e4 e5 2. d4 Nc6 3. d5 Nce7 4. f4 (4. Nf3) (4. c4) (4. Nc3 {main lines}) 4... exf4 (4... Ng6 5. Nf3 (5. h4 Nxf4 6. g3 Ng6 7. h5 N6e7 $15 {SF17.1, not yet played}) 5... exf4 6. Nc3 Bc5 $17 {1-1-4}) 5. Nf3 (5. Bxf4 Ng6 6. Bg3 Bc5 7. Nf3 d6 {4-2-8}) 5... Ng6 {This bears some resemblance to the Bonch-Osmolovsky variation of the King's Gambit 1 e4, e5 2. f4 exf4 3,Nf3, Ne7 f4h} 6. Qd4 (6. Nc3 {3-2-8}) (6. Bd3 Bc5 7. Nc3 a6 {1-0-4}) 6... d6 7. Nc3 Qf6 $146 (7... Nf6 $17 {Considered by Bl, pm analysis} 8. Be2 Be7 9. Bd2 O-O 10. O-O-O c5 11. Qg1 a6 12. g3 b5 13. gxf4 b4 14. Nb1 Nxe4 15. h4 Nxd2 16. Rxd2 Bf6 17. Qg3 Bd7 18. Ng5 Re8 19. Bd3 Bd4 20. f5 Ne5 21. Be4 Nc4 22. Rxd4 cxd4 23. Nxh7 Rxe4 24. Rg1 Re1+ 25. Rxe1 Kxh7 26. f6 Qxf6 27. Qd3+ Bf5 {0-1 Morcom,H (2020)-Cobb,J (2348) Monmouth op 2001 (2)}) (7... Be7 $17 {pm analysis} 8. Bb5+ Bd7 9. Bxd7+ Qxd7 10. Ne2 Bf6 11. Qb4 O-O-O 12. Qa3 Kb8 13. Nxf4 Nxf4 14. Bxf4 Qg4 15. Be3 b6 16. O-O-O Qxe4 17. Rhe1 Qc4 18. Bd4 Kb7 19. Re4 Qa6 20. Qb3 h6 21. Rd3 Ka8 22. Bxf6 Nxf6 23. Re7 Rd7 24. Rde3 Rxe7 25. Rxe7 Qf1+ 26. Re1 Qxg2 27. Qc3 Kb8 28. Rg1 Qf2 29. Rxg7 Qf1+ 30. Ne1 Re8 31. Kd1 Nxd5 32. Qd2 Qf6 {0-1 Pilhoefer,A (2108)-Hager,E (1770) Augsburg Afro op 2003 (3)}) 8. Bb5+ (8. Qc4 Qe7 9. Bd2 a6 10. O-O-O Nf6 11. Re1 Ne5 12. Qa4+ Nfd7 13. Bxf4 $14 {SF17.1}) 8... Kd8 $11 9. Qa4 (9. Qf2 {SF17.1}) 9... a6 {starts weakening the Q side where Bl's K is} (9... Ne5 {Bl's initial idea} 10. Ne2 g5 (10... Bg4 11. Nxf4 Bxf3 12. gxf3 g5 $15) 11. Bd2 Bg4 12. O-O-O Bxf3 13. gxf3 Nxf3 14. Bc3 Ne5 15. Nd4 Ne7 16. Be8 $16 {SF17.1}) 10. O-O (10. Bd2 Ne5 11. O-O-O Bg4 12. Ne2 $16 {SF17.1}) 10... Rb8 {Bl understimated the strength of Qa5 in what follows} (10... Ne5 $1 11. h4 h6 12. h5 g6 13. hxg6 Nxg6 14. Bd3 Qg7 $17 {SF17.1}) 11. Bd3 (11. Be2 {considered by Wh}) (11. Ne2 $1 {SF17.1, looked at by Bl} Bg4 12. Bd3 Ne5 13. Bxf4 Bxf3 14. gxf3 g5 15. Be3 Ne7 16. Kh1 Bg7 17. Rf2 h5 18. Rg1 Bh6 19. Qb3 Kc8 20. a4 $18 {a complex regrouping- in which Wh retains more space, and has safegaurded his own K and pieces. Then Wh will open up the Bl K with a Q side pawn advanced}) 11... b5 $2 {Bl should leave the Q side alone, it only provides targets for Wh Instead Bl should stick with the original idea of untangling the K side.} (11... Ne5 {SF17.1 and pm analysis} 12. Qb4 g5 13. Nxe5 (13. Bxa6 Nxf3+ 14. Rxf3 Bg7 $17 {SF17.1}) 13... Qxe5 14. Ne2 Bg7 15. g3 fxg3 16. hxg3 Bg4 17. Rxf7 (17. Kg2 Ne7 $11) 17... Bxe2 18. Bxe2 Qxg3+ 19. Kf1 Nh6 20. Qb3 (20. Rxg7 Rf8+ $19) 20... Qe5 $11 {SF17.1- Bl has managed to develop pieces}) 12. Qb4 N8e7 ({no longer works because after} 12... Ne5 13. Nxe5 {Bl can't retake with the pawn because of the unprotected B}) (12... Rb6 {holding up a4 , considered, but} 13. Ne2 Bd7 14. Qa5 Ke8 15. a4 bxa4 16. Bxa6 Qd8 {but Bl is in full retreat} 17. Nfd4 Be7 18. Bb5 {SF17.1 and Bl id losing on both sides of the board}) 13. a4 c6 {another afterthought, hoping to target the Wh Q , though she always ha a5 ch} (13... Ne5 14. axb5 g5 {just has to be tried, though Wh remains well ahead} 15. Nxe5 Qxe5 (15... dxe5 16. d6 Qxd6 17. Qxd6+ cxd6 18. bxa6 $18) 16. Bd2 Bg7 17. Qa5 axb5 (17... Qd4+ 18. Kh1 Qb6 19. Qxb6 cxb6 20. bxa6 $18) 18. Nxb5 Rb7 19. Bc3 $18) 14. e5 (14. Qa5+ Ke8 15. axb5 axb5 16. dxc6 Nxc6 17. Bxb5 Bd7 18. Bxc6 Bxc6 19. Qc7 {SF17.1 ends things simply}) 14... dxe5 15. d6 (15. Ne4 {which Bl thought would win the Q, allows Bl to cling on with} c5 16. Qxc5 Qb6 17. Qxb6+ Rxb6 18. axb5 axb5 19. Nfg5 Ke8 20. Ra7 Nxd5 (20... h6 21. Bxb5+ $1 $18) 21. Nxf7 Bd7 22. Nxh8 Nxh8 23. Ra8+ Ke7 24. Bd2 $18 {though with a pawn for the exchange Bl can play on}) (15. Qa5+ Ke8 16. Ne4 {does win the Q}) 15... Nd5 16. Nxd5 (16. Qa5+ Ke8 (16... Nb6 {expected by Wh, and pm analysis is worse} 17. Ne4 Qe6 18. Neg5 Qd5 19. Bxg6 hxg6 20. Nxf7+ $1 {SF17.1} Qxf7 21. Nxe5 Qb7 22. Bxf4 Be6 23. Nxg6 $18 {Bl is just running out of sensible moves}) 17. Nxd5 cxd5 18. axb5 Qxd6 19. bxa6 (19. Bxg6 hxg6 20. Nxe5 Qxe5 21. Re1 (21. Bxf4 Qd4+ 22. Kh1 Qb6 23. Rfe1+ Be7 24. Qc3 d4 $17) 21... Bc5+ 22. Kf1 Be3 $17) 19... Qc5+ 20. Kh1 Qxa5 21. Rxa5 e4 22. a7 Ra8 23. Bb5+ Bd7 24. Nd4 e3 $16 {sF17.1 but Bl has some resistance left}) 16... cxd5 17. Qa5+ Ke8 18. Bxg6 (18. axb5 Qxd6 {transposes to note above}) 18... hxg6 19. Nxe5 Bxd6 (19... Qxd6 {thought the best in pm analysis.} 20. Qe1 (20. axb5 Qxe5 $19) 20... Qb6+ 21. Kh1 Be7 22. Bxf4 Bf5 23. axb5 Qxb5 24. Nc6 Qxc6 25. Bxb8 f6 26. Qe2 Kf7 27. Rxa6 Qb7 28. Bg3 Bg4 29. Qd3 Bf5 30. Qe2 Bg4 {repetition}) (19... Qxd6 {However SF17.1 kills this with} 20. Nxf7 $1 Qc5+ 21. Kh1 Kxf7 22. Bxf4 Bf5 23. Bxb8 Bd6 24. Bxd6 Qxd6 25. h3 $18) 20. Bxf4 Kf8 {Here Bl had been under the illusion that 0-0 was legal and tried playing it, forgetting that the K had moved twice already. Wh pointed this out, and so Bl needed to play a K move since that was the piece touched first.} (20... Bxe5 $1 21. Bxe5 Qb6+ 22. Qxb6 Rxb6 23. Bxg7 Rh4 24. axb5 Rxb5 $11 {SF17.1 and Bl survives}) (20... Qh4 {looked at in pm analysis} 21. Rae1 (21. Bg3 $2 Bc5+ 22. Kh1 Qxg3 $19) (21. Nxg6 $1 $18 {SF17.1}) 21... Be6 22. Nxg6 $19) 21. Bg3 Bxe5 (21... Bf5 22. Nd7+ Bxd7 23. Rxf6 Bxg3 24. hxg3 gxf6 25. Qc7 $18) 22. Rxf6 gxf6 23. Bxe5 fxe5 24. Qc7 Ra8 25. Qd8+ (25. Qc6 {SF17.1 wins more material}) 25... Kg7 26. Qxd5 Be6 (26... Bf5 27. axb5 $18) 27. Qxe5+ Kh7 28. axb5 axb5 29. Rxa8 Rxa8 30. Qxb5 Rc8 31. c3 {Bl could blockade against a single Wh Q side pawn, but two is too much} Kg7 32. Qe5+ Kg8 33. b4 Bc4 34. Kf2 Ra8 35. Ke3 Ra2 36. Kd4 Be6 37. b5 Rxg2 38. b6 Rg4+ 39. Kc5 Rc4+ 40. Kb5 1-0