How to beat Mokdern Defense by Fong Yit San

As everyone know, IM Mok Tze Meng is a loyal believer in the Modern Defense. I even call the opening The "Mokdern Defense" because Mok play this opening succesfully   and he seldom lost with it,  especially in local tourney. I

However, in  round 4 of the 2011 SEA Games Selection held yesterday, Mok unexpectedly lost to a junior player - Fong Yit San (photo right) .Yit San is showing rapid improvement recently. He qualified for this selection after ending in top 10  at the 2011 National Closed held last March.

Below is his victory over Mok:-

Fong Yit San - IM Mok Tze Meng

SEA Games Selection, Round 4, 24.4.2011

Analyzed by Centaur (Hairulov+Fritz)

1.e4 g6 2. d4 Bg7 3. Nc3 c6 4. Nf3 d5 5. h3 Nh6 6. Bf4 f6 7. Be2 O-O 8. O-O Nf7 9. Bh2 e6
Fritz opening book suggest 9... b6 10. Re1 Bb7 11. Bf1 Nd7


10. Re1 Nd7 11.Bf1 f5 12. exd5 exd5 13. Ne2 Re8 14. Nf4 Nf6 15. Nd3  White is concentrating on e5 outpost for his peices while black on e4 square.


15...Ne4 16. c3 Qb6 17. Qc2 Be6 18. Nfe5 Nxe5 19. Bxe5 Bxe5 20. Nxe5

20... f4? Maybe black should maintain his pawn on f5 to support his knight. Breaking the center with 20...c5 followed by Rac8 playing along the c-file is a good option.

21. Bd3 Bf5 22. Nf3 Nd6 23. Bxf5 Nxf5 24. Ne5 Kg7?

The f4 is vulnerable. Black should support it with 24... Qd8 followed by Qh4 and g5 later


25. Qd2 Now the f4 pawn is lost.

 25...Re7 26. Qxf4 Rf8 27. Nd3 Rfe8 28. b3  28. Re5!Looks stronger.


28... Qa5 29. Qd2 Nxd4? Probably Mok missed the next move.

 30. b4! Ne2+  31. Rxe2 Rxe2 32. Qxe2 32. bxa5?? will lost to  32...Rxd2 33. Nc5 Ree2


32... Rxe2 33. bxa5 Rc2  34. Rc1  34. Rb1 keeps an even firmer grip for e.g. 34... Rxc3 35. Rxb7+ Kf6 36.Nb4 winning


34... Rxa2 35. Rb1 Rxa5 36. Rxb7+ Kf6 37. Rc7 a6 38. Nb4 White should not be greedy by grabbing the h7 pawn because after 38. Rxh7?! Ra1+ 39. Kh2 Ra3 white's c-pawn will drop and it will be much harder for white to convert his advantage.


38... Ra1+ 39. Kh2 a5 40. Nxc6 a4  41. Nb4 41. Rxh7!? seems even better 41...Rc1 42. Nb4 Ke6 43.Ra7


41... Ke6 42. Rc5 a3 43. Rxd5 stronger is 43. Rc6+ Kd7 44. Ra6 And black's can't progress much.


43...Rc1 44. Rc5 Kd6 45. Rc6+ Kd7

46. Ra6 46. Kg3 bring on the king is better.

46... Rxc3 47. Nd5 Rb3 48. Nb6+ Kc6 49. Nc4+ Kb5 50. Rxa3 

50...Kxc4 51. Rxb3 Kxb3 This endgame is totally lost for black because his king is too far away from
the action and white has an extra pawn.


52. Kg3 Kc4 53. Kf4 Kd3 53... Kd5 54. Kg5 and the h7 will drop.


54. g4 Ke2 55. f3 Kf2 56. h4 Kg2 57. h5 Kf2 58. hxg6 hxg6 59. g5 

59...Ke2 60. Ke5 1-0 Black resign.