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Oswestry Chess Club
[Event "Telford B v Oswestry B"] [Site "Telford"] [Date "2024.09.25"] [Round "Brd 2"] [White "Brown, Roger R"] [Black "Slegg, Gary"] [Result "1/2-1/2"] [ECO "B30"] [WhiteElo "1601"] [BlackElo "1575"] [Annotator "Gary Slegg"] [PlyCount "41"] [GameId "2094200513343498"] [EventDate "2024.??.??"] 1. e4 c5 2. c4 {This becomes an English, though it could transpose again to a Maroczy Sicilian, if Wh follows up with d4- vk} Nc6 3. Nf3 g6 4. Nc3 (4. d4 {main-vk}) 4... Nf6 (4... d6 5. Be2 Bg7 6. O-O e5 (6... Nh6 7. h3 f5 8. d3 O-O 9. Be3 f4 10. Bd2 e5 11. h4 Bf6 12. h5 gxh5 13. Nh2 h4 14. Bg4 Nxg4 15. Nxg4 Kh8 16. f3 h5 17. Nh6 Kh7 18. Nf5 Bxf5 19. exf5 Nd4 20. Kf2 Rg8 21. Rh1 {Ferreira De Souza,R (1370)-Carneiro,L (1667) Niteroi BRA 2023 0-1 (62)}) 7. a3 Nge7 8. b4 cxb4 9. axb4 O-O 10. b5 Nd4 11. d3 f5 12. Be3 fxe4 13. Nxe4 Nxe2+ 14. Qxe2 Bg4 15. Neg5 d5 16. h3 Bxf3 17. Nxf3 dxc4 18. d4 exd4 19. Qxc4+ {Kabanov,N (2472)-Guseinov,G (2631) Khanty-Mansiysk 2013 1-0 (50)}) 5. b3 $146 {the Chessbase database still has games with this line, but Wh scores terribly with 0-10. The Cloud Engines agree that Bl has a definite advantage after the natural Bl reply - vk} (5. Be2 Bg7 6. O-O O-O 7. h3 (7. Re1 d6 8. d4 cxd4 9. Nxd4 Nxe4 10. Nxc6 Nxc3 11. Nxd8 Nxd1 12. Bxd1 e5 13. Nxf7 Rxf7 14. Bb3 Be6 15. Be3 b5 16. Rac1 bxc4 17. Bxc4 Bxc4 18. Rxc4 d5 19. Rc2 d4 20. Bg5 h6 21. Bh4 g5 {Niyibizi,A (1756)-Dacres,D (1780) Batumi 2018 0-1 (50)}) 7... Qa5 8. d3 d6 9. Be3 e5 10. Ne1 Ne8 11. Bg4 Bxg4 12. hxg4 Nc7 13. Nc2 Ne6 14. Nd5 Nc7 15. Bd2 Nb4 16. a3 Ncxd5 17. exd5 Qd8 18. axb4 f5 19. bxc5 dxc5 {Pereira da Silva,G (1648)-Barroso,H (1919) Sao Paulo 2018 1-0 (31)}) (5. d3 Bg7 6. h3 d6 7. Be3 Be6 8. Qd2 h6 9. Be2 O-O 10. Bxh6 Qb6 11. Bxg7 Kxg7 12. Ng5 Nd4 13. Nxe6+ Nxe6 14. f4 Nd4 15. Bg4 Rh8 16. O-O-O Rh4 17. Nd5 Qa6 18. Kb1 Rah8 19. Nxf6 Kxf6 {Riegel,A (1640)-Suhr,S (821) Willingen 2015 1-0 (32)}) (5. d4 {still main; 439 games with 61 % for Wh.D3 has 56 games with 32 for Wh; while Be2 has 20 games at 50 %.- vk}) 5... Bg7 {[%cal Of6e4]} 6. Bd3 d6 (6... O-O {0-3 vk}) 7. h3 O-O (7... Nh5 $5 {[%cal Rh5f4] various Cloud Engines agree; targetting Wh weak squares of f4 and d4-vk} 8. g3 O-O $17) 8. O-O {Black is slightly better. [ the Cloud Engines give Bl as definitely better=-vk} (8. Bb2 Nh5 $17 {1-0-4 vk}) 8... Nb4 {[%eval -15,20]} (8... e6 $15 {[%eval -57,20] is superior.}) (8... Nh5 $17 {SF17}) 9. Bc2 {[%eval -62,19]} (9. Bb1 $1 $11 {[%eval -15,20]}) (9. Qe2 Nh5 10. Qe3 e5 (10... Nxd3 11. Qxd3 f5 $19 {the N is coming to f4 and h3 is a target}) 11. g4 $2 Nf4 $19 {Von Glehn-Santos, Salvador op 2023,0-1- vk}) 9... Bd7 {[%eval -20,22]} (9... Nh5 $15 {[%eval -62,19]} 10. Bb2 f5 11. Na4 Bxb2 12. Nxb2 e6 (12... e5 $19 {SF17, controls f4 & keeps B aimed at h3}) 13. d4 fxe4 (13... Nf4 $19 {SF17}) 14. Bxe4 d5 15. cxd5 exd5 16. Bc2 Nxc2 17. Qxc2 Bxh3 18. Qxc5 Rxf3 {Andrade-Silva, BRA North Region ch 2007,0-1 What these games show up is the weakness of Wh's K side, which both Wh Bs have left- vk}) 10. a3 $11 Nc6 11. Bb2 a6 {[%eval 3,20]} (11... Ne8 $15 {[%eval -41,20]}) 12. Re1 {[%eval -42,20]} (12. d4 $11 {[%eval 3,20] might be stronger.}) 12... Qb8 {[%eval 26,23] The Q just doesn't look right here, it supports a N to e5 , but leaves e7 vulnerable- vk} (12... Nh5 $15 {[%eval -42,20]}) 13. Nd5 Nxd5 {[%eval 31,22]} (13... e5 $1 $11 {[%eval 0,21]}) 14. Bxg7 $14 Kxg7 {[%eval 150,22]} (14... Ne3 $1 $11 {[%eval 21,21] remains equal.} 15. dxe3 (15. Rxe3 Kxg7 16. d4 $11 {SF17 looks more natural}) 15... Kxg7) 15. exd5 $16 {SF17 gives Wh as winning - vk} Ne5 16. Nxe5 {[%eval 91,22]} (16. Nh4 $142 {[%eval 160,22] because the N on e5 is in danger Wh gets a rapid K side attack going with f4, helped by the Bl Q offside on b8-vk}) 16... dxe5 17. Qe2 Re8 18. Qxe5+ Qxe5 19. Rxe5 f6 20. Re3 b5 21. Rb1 {Weighted Error Value: White=0.18 (very precise) /Black=0.36 Wh is definitel better , but being behind in time , offered a draw as the match result was not in doubt-vk} 1/2-1/2
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Annotated by