Ian Udani vs Mok Tze Meng - Round 5, PJCNT 08

One of the interesting game in the Pencarian Jaguh Catur Negeri Terengganu 2008 (PJCNT 08)which concluded recently is the 5th round game between the two top players - Filipino - Ian Udani vs national player - FM Mok Tze Meng (right) . Ian Udani has the better positions for almost the entire game . Udani however made a desicive mistake in the end which cost him the game.


Analyzed by Hairulov and Fritz 11
Ian Udani (2181) - FM Mok Tze Meng (2308) [A10]
Pencarian Jaguh Catur Negeri Terengganu ( PJCNT), Round 5, 12.2008
1.c4 g6 2.Nc3 Bg7 3.g3 e5 4.Bg2 f5 5.e3 Nc6 6.d3 Nf6 7.Nge2 0–0 8.Rb1 a5 9.b3 d6 10.Bb2 Be6 11.Nd5 Qd7 12.0–0 g5 13.d4 exd4 14.Nxf6+ Bxf6 15.Nxd4 Nxd4 16.Bxd4 Rad8 17.f4 gxf4 18.exf4 b6 19.Bxf6 Rxf6 20.Qd4 Rg6 21.Rbe1 Qg7 22.Qd3 Kf8 23.Re3 Qf7 24.Rfe1 Bd7 25.Bd5 Qf6 26.Qe2 White position is clearly better then black. His rooks and queen dominate the e file. His bishop on d5 is on excellent post and far superior then black bishop which is dampen by his own f5 pawn. 26...Rg7 27.Kg2 Rb8 Mok has nothing better then to wait and see. 28.Qh5 Rd8 29.R1e2 Udani choose to avoid any counterplay by black. However he could play 29.Re6! Without worrying 29...Bxe6 30.Rxe6 Qb2+ 31.Kh3 And white will have a desicive attack with 32.Qxf5+ 31...Rg6 32.Qxf5+ Kg7 33.Re7+ Kh8 (33...Kh6 34.Qh5+!! Kxh5 35.Rxh7+ Rh6 36.Bf7#) 34.Qh5 Qg7 (34...Rg7 35.Qe8+ Rg8 (35...Rxe8 36.Rxe8+ Rg8 37.Rxg8#) 36.Rxh7+ Kxh7 37.Qh5+ Kg7 38.Qg5+ Kh7 39.Be4+ Rg6 40.Qxg6+ Kh8 41.Qh7#) 35.Rxg7 Rxg7 And white is winning. 29...Rb8 30.Re6!

White superior position permit him to play this exchange sacrifiece. 30...Bxe6 31.Rxe6 Qb2+ 32.Kh3 Rg6 33.Qxh7 ? White lost all his advantage with this move. My Sillicon Master (Fritz 11) suggest an extravaganza move 33.Re5!! I'm not sure whether the great Mikhail Tal or Shirov would find or even consider this move. The idea is to block black queen to defend black kingside for e.g 33...dxe5 34.Qxh7 Rg7 35.Qh8+ Ke7 36.Qxg7+ Kd6 37.Qf6+ Kc5 38.Qe7+ Kd4 39.Qxe5+ Kd3 40.Qxb2 Black lost his queen and the game.; For alternative, white can still win with 33.Qxf5+ for e.g 33...Kg7 34.Re7+ Kh6 (34...Kh8 35.Qh5 Rg7 36.Re8+) 35.Qh5+!! Kxh5 36.Rxh7+ Rh6 37.Bf7# 33...Rxe6 34.Bxe6 Qg7 Now white attack is not strong anymore because black's queen is able to done his defensive duty. . 35.Qxg7+? Keeping the queen with 35.Qxf5+ or ; 35.Qh4 Is probably better. 35...Kxg7 36.Bxf5 Udani probably believe that his 3 connected passed pawn on the kingside will give him a better chance. 36...Re8 Mok activate his rook to penetrate white position and defending against white's king and passed pawns by attacking them from behind! 37.g4 Re2 38.g5 Rxa2 39.Bd7 Rb2 40.f5 Rxb3+ 41.Kg4 Rc3 42.f6+ Kf7 43.Kf5 Rf3+ 44.Ke4 Rf1 45.h4 Re1+ 46.Kf4 Rc1 47.Kf5 Rf1+ 48.Ke4 Re1+ The position is clearly drawn. White can't advance his passed pawn because his king is exposed to attack by black rook. 49.Kf4 49.Kd5 Re5+ 50.Kd4 (50.Kc6?? a4 51.Kxc7 a3) 50...c5+ 51.Kd3 d5 49...Rf1+ 50.Kg4 Rc1 51.Kf5 Rf1+ 52.Ke4 Re1+ 53.Kf3 A risky move. White harass black rook but leave his pawn. Udani shows that he will not satisfied with a draw for this game so he opt for more! 53...Rf1+ 54.Kg2 54...Rf4 55.h5 55.Kg3 Re4 56.h5 Re5 57.Kf4 Rc5 58.h6 Rxc4+ 59.Kg3 Rc3+ 60.Kg4 Rc4+ 61.Kh5 Rc2 62.Bc6 Rh2+ 63.Kg4 Rxh6 64.gxh6 Kxf6 65.Kh5 d5 66.Bxd5 a4 67.Be6 a3 55...Rxc4 Udani has manage to advance his h pawn from h4 to h5 at the cost of his c4 pawn. At the same time black queenside pawns can advance further. 56.Kg3 Rc3+ 57.Kf4 Rc4+ 58.Kg3 Rc3+ It look risky to push the a pawn for e.g 58...a4 59.h6 Rc3+ 60.Kg4 Rc4+ 61.Kh5 59.Kf4 Rc1 60.Bf5 Rf1+
61.Ke4?? Udani should left the e4 square for his bishop to play the possible Be4-d5+ checking black king and and capture black a pawn if black push it to a2! 61.Kg4 is the correct move 61...a4 62.h6 a3 63.h7 Rh1
0-1 and Udani Resign because after for e.g 64.g6+ Kxf6 65.Be6 Kxg6 white has nothing more to play .