Saturday, December 08, 2007

Round 5 :World Cup 2007

Below are the turning points of three desicive games of the Round 5 (2nd game).

Analyze by Hairulov and Fritz

Gata Kamsky - Ruslan Ponomariov
Chess World Cup 2007 Round 5 Khanty-Mansiysk 2007.12.7

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Qb6 8.Qd2 (8.Nb3 is a tame alternative. Kamsky invite Ponomariov to play 8...Qxb2 - the famaous Poison pawn Variation) 8...Nc6 no thanks! 9.Bxf6 gxf6 10.Nb3 Bd7 11.0–0–0 0–0–0 12.Be2 h5 13.Rhf1 Be7 14.Rf3 Rdg8 15.Bf1 Kb8 16.Kb1 h4 17.Qe1 Rg4 18.a3 Qc7 19.Ne2 Rh5 20.h3 Rg8 21.f5 Rhh8 22.Nf4 Bf8 23.Qf2 Rg5 24.fxe6 fxe6 25.Rc3 Rh6?! I think this is a waste move because this rook are performing passively on the h file. [25...Bg7!? May be better. Giving the rook on h8 path to queenside for defensive task if needed. Further more the bishop on g7 might eyeing some tactical oppurtunity on a1–h8 diaganol.] 26.Nd4 Re5 [26...Qc8 27.Bxa6 bxa6 28.Nfxe6 Bxe6 29.Nxc6+ Kc7 30.Qa7+ Qb7 31.Nd4+]

27.Nd3 [27.Bxa6!? Is interesting but 27.Nd3 is good enough for Kamsky to win the game. 27...bxa6 28.Nfxe6 Rxe6 29.Rxc6 Bxc6 30.Nxe6] 27...Rxe4 28.Nb4 Rxd4 [28...Re5? 29.Ndxc6+ Bxc6 (29...bxc6?? 30.Nxa6+) 30.Rxc6 That's the combo!] 29.Rxd4 Qa5 30.Rxh4 [30.Nxa6+!! is what found by the tactical monster Mr.Fritz!!! 30...bxa6 31.Ra4 Qxa4 (31...Qc7 32.Rxa6 Kc8 33.Bb5 Qb7 34.Bxc6 Qxa6 35.Bb5+) 32.Qb6+ Kc8 (32...Ka8 33.Bxa6 Bc8 (33...Nd8 34.Rc7) 34.Bxc8) 33.Bxa6+ Qxa6 34.Qxa6+] 30...f5 31.Rxh6 Bxh6 32.Rb3 Nxb4 33.Rxb4 Bc6 34.g4 fxg4 35.Rxg4 Qe5 36.Rg8+ Kc7 37.Bd3 Be3 38.Qg3 Qc5 39.b4 Qd4 40.Qg7+ Qxg7 41.Rxg7+ Kd8 42.h4 e5 43.h5 e4 44.Be2 Bf4 45.Rg6 1–0

Ivan Cheparinov - Magnus Carlsen
Chess World Cup 2007 Round 5 Khanty-Mansiysk
2007.12.7 be added soon :)

Dmitry Jakovenko - Alexei Shirov
Chess World Cup 2007 Round 5 Khanty-Mansiysk

1.c4 e5 2.g3 Nf6 3.Bg2 d5 4.cxd5 Nxd5 5.Nc3 Nb6 6.Nf3 Nc6 English Opening: Four Knights Variation 7.0–0 Be7 8.b3 0–0 9.Bb2 Bg4 10.h3 [10.a4 and; 10.Rc1 playing on the queenside are more normal. Maybe Jakovenko want to divert from "normal path".] 10...Bh5 11.d3 Re8 12.Rc1 Bf8 [12...f5 13.Na4!? is interesting plan because after 13...Nxa4 14.bxa4 White is attacking the e5 pawn and has an interesting plan of playing a5-a6 to weaken the b-pawn which is supporting the black knight on c6 .] 13.Ne4 Nd7 14.g4 Bg6 15.Ng3 a5 16.d4 e4 17.Ne5 Ndxe5 18.dxe5 Qh4 19.e3 Rad8 Black has a pleasent position. 20.Qc2 Nb4 [ 20...Nxe5 21.Bxe5 Rxe5 22.Qxc7 Qe7 23.Qxe7 Bxe7 24.Rfd1 Rxd1+ 25.Rxd1 Kf8 26.Rd4 Bc5 27.Rd7 b5 28.h4 h6 -0.08/14 ; 20...Nxe5 21.Bxe5 Rxe5 22.Qxc7=] 21.Qe2 Jakovenko is in dilemma. He can't stop shirov from putting the knight on d3. He should have played 21.Qxc7!? an interesting option and should be better then Jakovenko choice. 21...Nd3 (21...Nd5 22.Qxb7 Nxe3 23.fxe3 Qxg3 24.Bd4) 22.Bd4!? Nxc1 23.Rxc1 b5 (23...Rc8? 24.Qxc8! Rxc8 25.Rxc8 thretening 26.Bc5!) 24.Qxa5 Rc8 25.Rf1 Bc5 26.Nxe4 Bxd4 27.exd4 Bxe4 28.Bxe4 Qxh3 0.83/14 ] 21...c6 [Instead of 21...Nxa2 22.Rxc7 Nb4 23.Nxe4] 22.Nxe4 Nd3 23.Rc4 [23.Rcd1 Nxb2 (23...Nxe5 24.Rxd8 Qxd8 25.Rd1) 24.Rxd8 Rxd8 25.Qxb2 Bxe4 26.Bxe4 Qxh3=] 23...Nxe5 24.Bxe5 Rxe5 black has a better endgame prospect due to his bishop pair but it's still long way to go especially when others heavy piece still on the board but
25.Rd1? was a serious mistake by he will be down on material. [ 25.f4 Bxe4 26.fxe5 Bd3 27.Qe1 Qg5 28.Rd4 Rxd4 29.exd4 Bb4 30.Qf2 Bxf1 31.Bxf1 Qc1 32.Kg2 Be1 33.Qe2 ] 25...Rxd1+–+ 26.Qxd1 b5 27.Rd4 [27.Rxc6 Bxe4 (‹27...Rxe4 28.Rxg6 Rxe3 29.Ra6 (‹29.fxe3 hxg6 30.Kf1 Qg3) ) 28.Bxe4 Rxe4–+] 27...c5 28.Rd5 [28.f4 cxd4 29.fxe5 dxe3–+] 28...Rxe4 29.Bxe4 Bxe4 30.Rd8 Qe7 [30...Qf6 seems even better 31.Rb8–+] 31.Rb8 [31.Qd7 Qxd7 32.Rxd7 g6–+] 31...b4 [31...Qf6 32.Kf1 Bc6 33.g5 Qe5 34.Rd8 a4 35.bxa4 bxa4 36.h4 c4 37.Qd4 Qb5 38.Ke2 c3+ -2.63/14 ; 31...Qf6!? might be the shorter path 32.Kf1 g6 33.f4–+] 32.Qe2?? leading to a quick end [32.Qd8 Qxd8 33.Rxd8 f5 34.Kf1 Kf7 35.Rd7+ Be7 36.Ra7 a4 37.Rxa4 fxg4 38.hxg4 Bf3 39.Ra7 g5 40.Ke1 Bxg4 41.f4 gxf4 42.exf4 h5 43.Kf2 -1.74/19 ; 32.f3 Bc6 33.Kf2–+] 32...Qd6 33.Qc4 Bf3–+ Jako will have problem to face checkmate threat from black queen and bishop along the diaganol h1-a8 0–1

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