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Oswestry Chess Club
[Event "Oswestry B v Darwinian Kts B"] [Site "Oswestry"] [Date "2024.10.17"] [Round "Brd 2"] [White "Smith, Jonathan"] [Black "Brims, Alex"] [Result "1/2-1/2"] [ECO "A40"] [WhiteElo "1555"] [BlackElo "1558"] [Annotator "Rudy van Kemenade"] [PlyCount "75"] [GameId "2102085397803567"] [EventDate "2024.10.18"] [SourceVersionDate "2024.09.14"] {[%evp 0,12,21,21,68,56,55,42,65,61,65,51,47,55,50]} 1. d4 g6 2. c4 e6 3. Nf3 Bg7 4. Nc3 Ne7 {A Hippopotamous, which also featured in Sadler-Tennant, TelfordB-OswestryB,2024 0-1} 5. e3 (5. e4 d5 (5... O-O 6. Be2 d5 7. cxd5 exd5 8. e5 {R Van Kemenade-Ansari , Cox Trophy final 2024,1/2-1/2}) 6. e5 {main, varying from Hippo proper is anotherGM line}) 5... a6 6. Be2 d6 (6... b6 7. Bd2 Bb7 8. Rc1 d6 {Ostermeier-Winter, Frankfurt ch 2008,0-1}) 7. O-O b6 8. Re1 (8. b4 {SF17} c5 9. Qb3 cxb4 10. Qxb4 Nbc6 11. Qb3 Qc7 12. Rb1 Rb8 13. Bd2 Na5 14. Qc2 O-O 15. Na4 {Koellner-Schwab, Koln Longerich op 2015,1-0}) 8... Bb7 9. Bf1 $14 {3rd line of SF17} (9. e4) 9... Nd7 10. g3 h6 11. Bg2 g5 12. g4 $6 {Bl's last signalled the standard Ng6 in the Hippo. Wh's rearrangement of the B and g3 holds this up. It is inconsisten to then invite the N in via h4 Also the move allows Bl to open the h file quickly} Ng6 (12... Rb8 {is a prior precaution}) 13. Nd2 (13. Ne5 $1 dxe5 14. Bxb7 Rb8 15. Bc6 exd4 16. exd4 O-O $15 {SF17}) 13... Bxg2 14. Kxg2 Nf6 $19 15. Nde4 Nd7 (15... Nxe4 16. Nxe4 d5 $19 {SF17}) 16. d5 e5 $6 {this blocks in the B- it is best to exchange it first- giving more room for the Rs on the K side files. It also cedes the f5 square to Wh} (16... Bxc3 17. bxc3 Qe7 18. Ng3 O-O-O $19 {SF17}) 17. Ng3 (17. Kh1 h5 18. gxh5 g4 19. hxg6 f5 20. f4 Qh4 21. Re2 fxe4 22. Rg2 $14 {SF17}) 17... Nh4+ 18. Kg1 (18. Kh1 e4 19. Ncxe4 Qe7 20. f4 O-O-O $14 {SF17}) 18... Qf6 (18... e4 19. Ncxe4 Ne5 20. Kh1 Qd7 21. Nh5 Kf8 22. Neg3 Qxg4 $11 {SF17}) 19. f4 O-O-O 20. Nh5 (20. Nce4 $1 $18 Qe7 (20... Qg6 21. f5 Qh7 22. Nh5 Nc5 23. Nxc5 dxc5 24. e4 f6 25. Be3 {and Wh goes on to attack the Bl K while Bl can do nothing on the other side, even having trouble bringing his pieces back to support his K})) 20... Qg6 21. Nxg7 $2 {gets rid of a somewhat useless B and also allowing Bl to open the h file at wish} (21. f5 Qh7 22. Ne4 $18 {Sf17}) 21... Qxg7 $19 22. f5 Nf6 (22... e4 23. Nxe4 h5 $19 {SF17}) (22... h5 23. Ne4 hxg4 24. Qxg4 Qh7 25. f6 Qh5 26. Qxh5 Rxh5 27. Kf2 Nf5 $19 {SF17-Wh is playing without the Q side pieces'}) 23. e4 (23. c5 dxc5 24. Qa4 Kb7 25. Qc6+ Kb8 26. b4 cxb4 27. Ba3 {is SF17's desperate attempt to get at the Bl K before the Bl attack breaks through}) 23... h5 24. h3 hxg4 25. hxg4 Qh6 26. Qe2 Nxf5 $1 27. exf5 (27. Qg2 Nd4 28. Be3 Nc2 $19 {SF17}) 27... Qh1+ 28. Kf2 Rh2+ (28... Nxg4+ $1 {diverts the Q.} 29. Qxg4 Rh2+ 30. Ke3 Qxe1+ 31. Kd3 Rdh8 32. Be3 Qxa1 33. Qd1 Qxb2 34. Qc1 Qg2 $19 {SF17}) 29. Kg3 (29. Ke3 Rxe2+ 30. Kxe2 Qh3 {SF17- escapes the immediate mate, but hopeless for Wh}) 29... Rh3+ (29... Rdh8 $1 30. Rxh1 R8h3# {SF17}) 30. Kf2 Qh2+ ({as at note to move 28} 30... Nxg4+) 31. Kf1 Qg3 32. Qg2 Rdh8 (32... Qd3+ {still ok} 33. Re2 Rdh8 34. Bxg5 Rh1+ 35. Kf2 Nxg4+ 36. Qxg4 R8h2+ 37. Qg2 Rxg2+ 38. Kxg2 Qh3+ 39. Kf2 Rxa1 $19 {SF17}) (32... Qh4 {also works, but less so than the previous lines .Its a more positional line} 33. Bxg5 Rh1+ 34. Ke2 Rxe1+ 35. Rxe1 Qxg5 36. Rh1 (36. Rg1 Rh8 37. Kd3 Kb7 38. a3 Rh4 $19 39. Ne4 Nxe4 40. Qxe4 Rh2 41. Qe3 Qh4 42. Qe1 Qh8 43. Qe4 Rxb2) 36... Nxg4 37. Qf3 Nf6 $19) (32... Qxg2+ 33. Kxg2 Rdh8 34. Bxg5 Rh2+ 35. Kg1 Nxg4 {and Bl must take the perpetual}) 33. Qxg3 Rxg3 34. Bxg5 Nxg4 (34... Rh2 35. Bxf6 Rf3+ 36. Kg1 Rff2 37. Re2 Rhg2+ 38. Kh1 Rh2+ {SF17 perpetual}) 35. Ne4 Rh1+ 36. Ke2 Rh2+ 37. Kf1 (37. Kd1 {[#] an attempt at escaping to the Q side, but the Engine still finds repetition in various ways, even though a piece up Wh must shed pawns in other to get his Q side moving} Rgg2 (37... Rd3+ 38. Bd2 Rd4 39. Kc2 Nf6 (39... Rxc4+ 40. Nc3 Rf2 {also gives Bl enough to hold}) 40. Nxf6 Rhxd2+ (40... Rdxd2+ 41. Kc3 Rc2+ 42. Kd3 Rcd2+ 43. Kc3 (43. Ke3 Rxb2 $11) 43... Rc2+) 41. Kc1 (41. Kb3 R4d3+ 42. Ka4 Rxb2 43. a3 Rdb3 44. Re2 b5+ 45. Ka5 Rxe2 $19) 41... Rf2 $11) 38. Bc1 Nf2+ 39. Nxf2 Rxf2 40. a4 a5 41. Ra3 Rxf5 42. Rae3 Rf4 43. Re4 Rf3 44. R4e2 Rh4 45. Rc2 f5 $11 {SF17- however Wh might finfd room for further play here- though either human could still go wrong in finding the best moves all the time.}) 37... Rh1+ 38. Ke2 1/2-1/2
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Annotated by