Purenne,B (1869) - Cheng,B (2088) [B84] World Youth Championship open 12 (5), 23.10.2008
Bobby Cheng was not surprisingly the best performing Kiwi at the latest World Youth Championship. Bobby's name has been appearing in alot of Aussie tournaments lately, has NZ lost another talented youngster to this bunch?
1.e4 c5 2.Nc3 e6 3.Nf3 a6 4.d4 cxd4 5.Nxd4 Qc7 6.Be2 Nf6 7.0-0 d6 8.Be3 Be7 9.f4
9...0-0 K. Bischoff who was a commentator at the Anand-Kramnik match and will be playing Queenstown 09 has played this opening with some regularity. 10.g4 Nfd7 11.g5 Re8 12.Bh5 g6 13.Bg4 Bd8 14.Qd2 Nc6 15.Rad1 Nxd4 16.Bxd4 b5 17.Qf2 Bb7 18.Rd3 Nf8 19.b4 Qc4 20.a3 Rc8 21.Qh4 h5 22.Bxh5 gxh5 23.Qxh5 Qxd4+ 24.Rxd4 Bb6 25.Ne2 Rxc2 26.Rfd1 e5 27.Kf1 exd4 28.e5 dxe5 29.f5 e4 30.Qh6 d3 31.Ng3 e3 32.Rxd3 e2+ 33.Nxe2 Rexe2 34.Qxb6 Bg2+ 0-1 Xie Jun-Bischoff,K/Baden-Baden 1992/CBM 033 (34);
9...Nc6 Paying Nc6 would lead the game to a more traditional Scheveningen position.
10.Qe1 b5 11.Bf3 Bb7 12.a3 g6
12...0-0 This would be ok for black it does give white an easy plan of attacking on the k-side. 13.Kh1 h5
In Taimanov position's where black plays the e6 a6 Qc7 setup black players usually don't like to castle and will try to avoid Scheveningen setups, preferring to attack on the wing's while keeping the king in the center. Bobby's setup is a little bit of a mixture because he has played d6 which is not part of the Taimanov setup so strictly speaking his position is some sort of Schevenengen Taimanov hybrid.
White is not really paying attention to black's setup and chooses the same attacking formation as if black has castled, losing all his advantage. Better is 14.Rd1
14...Nc5 15.e5 Nce4 16.Qe1 dxe5 17.fxe5 Qxe5 White deos have compensation for the pawn the position is dynamically balanced.
15.Qe1 e5 16.Nb3 0-0-0 17.a4 b4
Correctly keeping the position closed.
18. Nd5 is a better move
With this move black takes the initiative and now has the better position.
19.exd5 e4! 20.Bd4?
20.Bd1 is the better option
20...exf3 21.Qxe7 fxg2+ 22.Kxg2 Nxd5 23.Qe1 Nxf4+ 24.Kf2
24...Nd3+! 25.cxd3 Qxh2+
25...Qxh2+ 26.Ke3 Rhe8+ 27.Be5 Rxe5+ 28.Kd4 Nb6#