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Oswestry Chess Club

[Event "Club Championship 2025/26"]
[Site "Morda"]
[Round "Rd 1"]
[White "Van Kemenade, Rudy"]
[Black "Slegg, Gary"]
[Result "1-0"]
[Annotator "Slegg,Gary"]
[ECO "B31"]
[WhiteElo "1955"]
[BlackElo "1562"]
[EventDate "20.08.2025"]

{[%evp 15,55,1,15,6,13,-1,1,-1,1,-1,36,-11,8,10,101,-1,169,146,297,286,297,244,319,243,287,223,587,557,583,556,712,672,871,779,907,788,1235,1222,1238,1008,29992,2476] ž B31: Sicilian: 2...Nc6 3 Bb5 g6} 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 Nf6 (5... e5 {[added by vk, other comments by gs]} 6. d3 Nge7 7. Be3 d6 8. d4 cxd4 9. cxd4 O-O 10. h3 a6 11. Bxc6 Nxc6 12. Nc3 Kh8 13. dxe5 dxe5 14. Qxd8 Rxd8 15. Bb6 Rd3 16. Rfd1 Rxd1+ 17. Rxd1 f5 18. Nd5 h6 19. Nc7 Rb8 20. Nh4 Kh7 21. f3 Bf6 22. g3 fxe4 23. fxe4 Bxh3 24. Ng2 Nd4 25. Rf1 Kg7 26. Nd5 Bg5 27. Bxd4 exd4 28. Rd1 Rc8 29. Ngf4 Bg4 30. Rd2 Rc1+ 31. Kf2 h5 32. Nb4 h4 33. Nbd3 Rc8 34. Ne5 hxg3+ 35. Kxg3 Bxf4+ 36. Kxf4 Be6 37. Rxd4 {½-½ Van Kemenade,R (1964)-Feavyour,J (2038) BCF-ch Seniors Aberystwyth 2014 (4)}) 6. Re1 O-O 7. h3 (7. d4 {main -vk} cxd4 8. cxd4 d5 9. e5 Ne4 10. Nc3 {1[095 games including by elite GMs-vk]}) 7... e5 {This was the end of my preperation -[main vk]} 8. d3 {[main 54% for Wh-vk]} (8. d4 {next 52% for Wh vk]}) (8. Bxc6 {[risky vk preferred to enter more positional lines]} dxc6 9. Nxe5 Re8 10. f4 Nh5 11. d4 Qh4 {[1-4-4 vk)}) 8... d6 (8... Qc7 9. Bg5 a6 10. Ba4 b5 11. Bc2 h6 12. Be3 d6 13. Nbd2 Bb7 14. Nf1 Nd8 15. Qd2 Kh7 16. g4 d5 17. Nxe5 Qxe5 18. f4 Qc7 19. e5 d4 20. cxd4 cxd4 21. Bxd4 Qc6 22. Ng3 Ne6 23. Be3 Nd5 24. d4 Nxe3 25. Rxe3 Nxf4 26. Rc3 Qg2+ 27. Qxg2 Bxg2 28. Nh5 Nxh5 29. gxh5 Bd5 30. Rg3 Rac8 31. hxg6+ fxg6 32. Bxg6+ Kh8 33. h4 Rf4 34. h5 Rxd4 35. Re3 Rf8 36. e6 Rh4 37. e7 Rh1# {0-1 Van Kemenade,R (2048)-Dworakowska,J (2376) Gibraltar Masters 2007 (6)}) 9. Be3 {[SF17.1; 49% for Wh vk]} (9. Nbd2 {main -54% for Wh vk]}) 9... Bd7 (9... Qc7 10. Nbd2 a6 11. Ba4 b5 12. Bc2 h6 13. a3 Be6 14. d4 cxd4 15. cxd4 exd4 16. Nxd4 Nxd4 17. Bxd4 Rac8 18. Rc1 Rfe8 19. Nf3 Qb7 20. Qd2 Kh7 21. Bc3 d5 22. Bxf6 Bxf6 23. e5 Bg7 24. Nd4 {Chigaev,M (2623)-Saric,I (2650) Hungary 2020 1-0 (49)}) 10. Nbd2 a6 11. Ba4 {The position is equal.} b5 $146 {[Houdini6.3 and one of main lines of SF17.1-vk]} (11... Re8 12. Bc2 h6 13. a3 Rc8 14. b4 cxb4 15. cxb4 d5 16. exd5 Nxd5 17. Ne4 Nxe3 18. fxe3 Bf5 19. Bb3 Na7 20. a4 Nc6 21. Rb1 Qe7 22. b5 Na5 23. Ng3 Red8 24. Nxf5 gxf5 25. Qd2 Nxb3 26. Rxb3 {Kamer,K (2325)-Willow,J (2386) Tornelo INT 2020 ½-½ (75)}) (11... h6 12. a3 b5 13. Bc2 Rc8 14. b4 cxb4 15. axb4 a5 16. bxa5 Nxa5 17. Ra3 Nc6 18. Bb3 Nh5 19. Qb1 Nf4 20. d4 g5 21. Ra6 Qe7 22. Bd5 Nb8 23. Ra7 Rxc3 24. Bxf4 gxf4 25. dxe5 dxe5 26. Qxb5 {Martinez Alcantara,J (2611)-Mamedov,R (2640) chess.com INT 2023 ½-½ (87)}) (11... Ne8 12. Bb3 Kh8 13. Ng5 Qe7 14. Nc4 h6 15. Nf3 Qd8 16. a4 Be6 17. d4 cxd4 18. cxd4 b5 19. axb5 axb5 20. Rxa8 Qxa8 21. Nb6 Bxb3 22. Qxb3 Qb7 23. dxe5 dxe5 24. Bc5 Rg8 25. Qxb5 Nc7 26. Qc4 {Vuelban,V (2277)-Bettalli,F (2232) Montesilvano 2020 0-1 (47)}) 12. Bc2 b4 {[%eval 36,19] [the problem with this is that the b4 square really needs to be occupied by Bl pieces.It also creates wh square weaknesses This b4 idea , supported by a Rb8, is frequent in many Sicilian positions. However, the position here has much  more resemblance to a Ruy Lopez. Here Bl needs to wait and be prepared to contest the c file ,should Wh play for d4. vk]} (12... Re8 $11 {[%eval -1,20]}) 13. d4 {[%eval -11,24]} (13. Rc1 $14 {[%eval 36,19]}) 13... cxd4 14. cxd4 {[%cal Bc3d4,Bd4d5,Bd5c6][%mdl 32]} a5 {[%eval 101,20] [#] [positionally bad as the two Q side pawns are static and thus vulnerable later. Besides the a5 square is a good post for Bl's N , challeging Wh's N desire to go to c4 -vk} (14... exd4 $11 {[%eval 10,22] keeps the balance.} 15. Bf4 (15. Nxd4 Ng4 $11) 15... Ne5) 15. Nc4 {[%eval -1,21]} (15. d5 $1 $16 {[%eval 101,20][%cal Rd5c6]} Ne7 16. Rc1 {[SF17.1 prefers} (16. Nc4 Bb5 17. Nfd2 $18 {[ which Wh decides is the best setup a few moves later vk]})) 15... Bc8 $2 {[%eval 169,24] [ undeveloping, this is already the losing move. Wh looked at wining the e pawn, but now decided to try and win both Bl's Q side pawns} (15... exd4 $11 {[%eval -1,21]} 16. Nxd4 d5 17. exd5 Nxd5) 16. d5 (16. dxe5 Nxe5 17. Nfxe5 dxe5 {and now} 18. Nxe5 (18. Nb6 Rb8 19. Bc5 Re8 20. Ba4 {[as given by SF17.1wins an exchange vk]}) 18... Bb7 (18... Nxe4 $2 {there is a loose N on e5,} 19. Bxe4 {but a loose R on a8- seen by wh}) 19. Qxd8 Raxd8 $16 {but this is ansuch an open position, where Bl has very active piece play vk]}) 16... Ba6 $2 {[%eval 297,22] This costs Black the game.} (16... Nd4 $16 {[%eval 146,23] [pm suggestion, but Bl is still losing as the Wh pieces retain a grip on the position} 17. Nxd4 exd4 18. Bxd4 Rb8 19. Ba4 Ba6 20. Rc1 {Bl has weak pawns on the q side and centre & is already one pawn down} Bxc4 21. Rxc4 Nd7 22. Bxg7 Kxg7 23. Bxd7 Qxd7 24. Qd4+ f6 25. f4 $18 {[SF17.1 vk]}) 17. Nb6 $18 ({Less strong is} 17. dxc6 Bxc4 18. Bg5 Bb5 $16) 17... Rb8 18. dxc6 Rxb6 19. Bxb6 Qxb6 20. Ba4 {Wh wanted to keep the c6 pawn , leaving the weak d6 pawn in Bls way. However SF17.1 prefers the exchanges as even stronger} (20. Qxd6 Ne8 21. Qd1 Qxc6 22. Bb3 {SF17.1 the Wh pieces control the centre , neither of his Bs is doing much, and the N is misplaced, and an exchange down vk]}) 20... Bh6 $2 {[%eval 587,22]} (20... Nh5 {[%eval 223,22]} 21. Rc1 (21. Qxd6 Rd8 $17) 21... Qc7 {[SF17.1 continues with} 22. g3 $18) 21. Qxd6 Ne8 22. Qe7 Bg7 23. Nxe5 Qc7 24. Nd7 Kh8 {[a N move loses the Q vk]} 25. e5 {[scarcely any of Bl's pieces can move vk]} Rg8 26. Qxf7 Rf8 27. Qd5 {simplest} ({Wh spent a bit of time calculating the flashy} 27. e6 Rxf7 28. exf7 Nd6 29. Re8+ Bf8 30. Rxf8+ (30. Nxf8 {pm analysis[]} Qxf7 31. Nxg6+ Kg7 32. Re7 Kxg6 33. Rxf7 Kxf7 34. c7 {is only about 8+}) 30... Kg7 31. Bb3 Kh6 32. Ne5 {which SF17.1 rates as 11 + vk}) 27... Rg8 (27... Qd8 28. Rad1 Rxf2 29. Kxf2 Nc7 30. Qe4 Ne8 $18 {[is about the best that SF17.1 can suggest for Bl vk}) 28. Bb3 {Weighted Error Value: White=0.25 (precise) /Black=1.18} 1-0

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