Saturday, September 04, 2010

NM Lim Chuin Hoong - GM Gerhard Schebler

NM (Dr.) Lim Chuin Hoong gave a "strong medicine" to his "patient" - GM Gerhard Schebler in round 4 of the DATMO 2010.

NM Lim Chuin Hoong (2302) vs GM Gerhard Schebler (2474)
DATMO , Round 4, 3.9.3010

Analysed by Centaur (Hairulov + Rybka 4)

1. d4 e6 2. c4 Bb4+ 3. Bd2 Bxd2+ 4. Qxd2 Nf6 5. g3 O-O 6. Bg2 d5 7. Nf3 Nbd7 8. O-O dxc4 9. a4 Theory recommend 9. Na3 e5 10. Nxc4 9...Rb8 10. Qc2 b6 11. Rd1 Bb7 12. Qxc4 Bxf3

13. exf3 The problem with 13. Bxf3?! is black will have a tactical move 13...Ne5! and white is force to give his bishop for black knight after 14. Qb3 (of course 14.dxe5? lost the exchange after 14... Qxd1+) 14... Nxf3+ 15. Qxf3 13... c5 14. Nc3 cxd4 15. Qxd4 Nc5 16. Qe3 Qe7 17. Nb5 Rfd8 18. Nd4 Qe8 19. b4

19...Nd5 if 19... Nxa4 White have an interesting alternative after 20. Qb3 b5 21. f4 Rbc8 22. Bc6! Rxc6? 23. Nxc6 Rxd1+ 24. Rxd1 Qxc6 25. Rd8+ Ne8 26. Qc2 20. Qa3 Nb7 21. Rac1White control the c file plus his strong knight at d4 which control the c6 square give him a pleasant position 21...Rbc8 22. f4 White open the h1-a8 diagonal for his bishop 22...Rxc1 23. Rxc1 Rc8 24. b5 Stronger is 24. f5! Rxc1+ 25. Qxc1 Qd7 26. fxe6 fxe6 27. Nxe6 Qxe6 28.Qc4 Qe1+ 29. Bf1 Qe6 30. Bh3 Qe1+ 31. Kg2 Qe5 32. Qc8+ 24... Na5?

Probably this is black's main mistake. 24...Rxc1+ would allow Black to play on for e.g 25. Qxc1 Nc5 25. Rxc8 Qxc8 26. Bxd5 exd5 27. Qd6 White's queen penetrate black territory whereas black's queen is passively defending his position 27...h6 28. Qxd5 black is a pawn down 28...Qc4 29. Qxc4 Nxc4 30. Nc6 Nb2 31. a5! bxa5 32. Nxa5 Kf8 33. Nc6 Ke8 34. Nxa7 Na4 35. Nc6 Kd7 36. Ne5+ Ke6 37. Kg2 f6 38. Nc6 Kd5 39.Kf3 Nc5 if 39... Kc5 40. Ne7 Kxb5 41. Nf5 40. g4 Nd7 41. Ne7+ 1-0 Black resign.

Play might continue with 41... Ke6 ( 41... Kc4 42. Nf5 and black will lose his g or h pawn ) 42. Nf5 and if he choose to guard his kingside pawn with 42...Kf7 white's king will penetrated to the queenside to escort his passed b-pawn with 43. Ke4

Well done Chuin Hoong !

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