Friday, April 01, 2011

FM Ooi Chern Ee - Kamaluddin Yusof

FM Ooi Chern Ee - Kamaluddin Yusof
Round 4, 27.3.2011, Lim Chong Memorial

Analyzed by Centaur (Hairulov+Fritz)

1. d4 g6 2. c4 f5 Dutch Defense. Kamaluddin long time favorite weapon.

3. Nc3 Nf6 4. h4 

Not the main weapon against the Dutch but still full with venom. Usually the conventional way to combat the Dutch is by playing positionally with g3-Bg2 but Ooi choose this straight forward attacking variation.

4...Bg7 5. h5 Nxh5 6. e4 fxe4  Theory recommend 6... Nf6 7. e5 Ne4 8. Nf3 ( another line is  8. Nxe4 fxe4 9. Bh6 Bxh6 10.Rxh6 c5) 8... Nxc3 9. bxc3

7. g4 White can also venture an interesting sacrifice with  7. Rxh5!? gxh5 8. Qxh5+ Kf8 9. Bh6 Black king side  defense is heavily damaged so he  have to defense accurately.  White on the other hand have an easier and clear  plan to attack.

7... Nf6 8. g5 Ng8 9. Bg2 Nc6? Black should develop and the defend his vulnerable squares ( h7 and g6) first with 9...e6 and 10...Ne7.  

10. Bxe4! white doesn't mind giving the d4 pawn for king side attack.

10...Nxd4 11. Rxh7! Rxh7 12. Bxg6+ Kf8 Black's king  is in danger.

13. Bxh7 e5 14. Be3 14. Nf3 is probably better with the idea of Nh4-Ng6+ later.

14... c6 15. Bxd4 exd4 16. Qf3+ Ke7 The start of an interesting tour for Black's king.

17. Qe4+ Kd6? Safer is staying near his camp with 17... Kf8 18. Qf4+ Ke7 19. Nce2

18. Qf4+ Stronger is 18. Qg6+! Kc7 19. Qxg7 dxc3 20. Bxg8 and white is a piece up. Probably white is afraid of Black's counter play after for e.g 20...Qe8+ 21.Ne4 Qe4

18... Kc5?? A cold blooded move but actually lead to a force mate in 10.

19. Na4+? The machine (Fritz) give the following force mate starting with... 19. b4+ ! Kxb4 [ if 19... Kxc4 will be answer by the stunning 20. Bd3+!! Kxb4 (20... Kxc3 21. Qd2# checkmate if 20...Kxd3 21.Qf5+ 22.Rc1+ Kxb4 23.Qc5+ and mate will follow shortly.] 21. Qd6+ Ka5 (21... Kxc3 22. Qa3# checkmate) 22. Qa3+ Kb6 23. Nd5+ !! cxd5 24. Qd6+ Ka5 25. Qc5+ Ka4 26. Bc2#checkmate ) 20.Qd6+ Kxc3 21. Rc1+ Kb2 22. Qb4+ Kxa2 (22... Kxc1 23. Ne2# checkmate) 23. Ra1+ Kxa1 24. Qa3#checkmate )

19... Kb4 20. Qd2+  Kxc4 Of course 20...Kxa4?? will lose instantly after 21.Bc2+ checkmate.

21. Rc1+ 21. Be4 controlling the Black's king exit square is stronger for e.g

21... Kd5 22. Rc5+ Ke6 23. Bf5+ ? White should let all his piece to join the attack with   23. Nf3 Kf7 24. Rf5+ Ke7 25. Bg6 maintaining the pressure.

23... Kf7  Black's king return back safely. White have failed to punish Black's king during his dangerous 'visit' to White's camp.

24. Qf4 Qe7+ 25. Ne2 Ke8 26. Bg6+ Kd8 27. Kf1 Probably going to the queen side is much safer.

27... d5 28. Rc1 Be5 28... Bh3+ is perhaps better. After being behind in development for so long, black should develop his remaining pieces.

29. Qh4 Qg7 30. Bh7 Ne7 31. Nc5 Nf5 32. Qh5?! white should just trade his off side bishop with Black's knight with 32.Bxf5  

32...Kc7 33. Nd3 Bd6 34. Nef4 Ne7 35. g6 Bd7 ?! Black should have play 35... Qf6! 36. Re1 (36. Ne2 Bf5!) 36... Bd7

36. Qg5  Rf8 37. Nh5 Qh8 ?? A serious mistake. The correct move is 37... Rf5 for e.g  38. Qxf5 (38. Qh4 ? Qh6 black will lost his knight) 38... Bxf5 39. Nxg7 Bxd3+ 40. Kg2 Nxg6 41. Ne8+ Kd7 42. Nxd6 Kxd6 Both side will have strong passed pawns. Black  on d file while white have its own passed pawn - the f-pawn.

38. g7 Qxh7? 38... Rxf2+ should be played. 39. Nxf2 Qxh7 but white is still winning after 40. Nf6

39. gxf8=Q Qxd3+ 40. Kg1 Nf5?? I believe both players is in severe time trouble here because

41. Qf7 ?? 41. Qfd8# checkmate end the game immedietly. I call Kamaluddin after receiving the games  to confirm whether there's a typo mistake but he said nope.

41... Qh3 42. Nf6??

Unfortunately for Ooi, he is the one who made the last mistake.  Actually 42. Nf4 will finishes off his  opponent  for e.g 42...Bxf4 (42... Qf3 ? and Black's lose his f5 knight after 43. Qgxf5) 43. Qxf4+ Nd6 44. Qxd5 Qg4+ 45. Qxg4 Bxg4 46. Qxd4 is clearly winning.

42... Bh2+ 43. Kh1 Bg3+ 44. Kg1 Qh2+ 45. Kf1 Qxf2# 0-1


Jimmy Liew said...

From the second last diagram, Ooi only left a few seconds so no surprise he missed the mate. Sharp eyed Ian Udani pointed it out immediately after the game.

chernee said...

18. Qg6+ was my original plan with a simple win of a piece but then I found the far more interesting possibility of a direct mating attack luring the king to b4. However, despite all white's pieces in the attack, black's king slips out and even managed to capture the important c4 pawn on his way back! Anyway, it was a fun game and certainly no regrets!

Mohd Zambri said...