12 SEPTEMBER 1987, Page 51

CHESS

Brothers in arms

Raymond Keene

This week, more games from the Zag- reb Interzonal, including one of the most important games in the competition, Vic- tor Korchnoi's needle clash with his erst- while second and co-qualifier, Yasser Seirawan.

Korchnoi (Switzerland) — Seirawan (USA): English Opening.

1 Nf3 Nf6 2 c4 b6 3 g3 Bb7 4 Bg2 c5 5 0-0 g6 6 d4 cxd4 7 Qxd4 Bg7 8 Nc3 d6 9 Be3 Nhd7 10 Racl 0-0 11 Qd2 Ne4 12 Nxe 4 Bxe4 13 Rfdl Qc7 14 Bh3 Rabb 15 Nd4 Bab 16 Nb5 Qb7 17 f3 a6 18 Nc3 b5 19 Nd5 e6 20 Ne7+ Kh8 21 c5 Ne5 22 Position before 27 Nxg6+

cxd6 Nc4 23 Rxc4 bxc4 24 d7 Rfd8 25 Bd4 Qb4 26 Qg5 Qb5 (Diagram) 27 Nxg6+ NO 28 Bxg7+ Kxg7 29 Qe7+ Kh6 30 Rd4 Qb6 31 e3 Qxd4 32 exd4 Bxf3 33 Bxe6 c3 34 bxc3 RIB 3513b3 Bh5 36 h4 Bf3 37 g4 a5 38 Kh2 Ba8 39 Bdl 1113 40 g5+ KM 41 Kg3 Black Resigns. A wonderful game by Korchnoi, conducted with youthful verve against an opponent half his age. If 27 . . . hxg6

28 Qh6+ while 29 . . . Kh8 loses to 30 Qf6+ and Bxe6.

Seirawan — Nogueiras (Cuba): King's Indian Defence.

1 d4 g6 2 e4 Bg7 3 c4 d6 4 Nc3 Nd7 5 Be3 e5 6 dxe5 dxe5 7 N13 Ngf6 8 Nd2 h5 9 Be2 Bh6 10 Bxh6 Rxh6 11 b4 a5 12 a3 Nf8 13 Nb3 Qxd1 + 14 Bxdl axb4 15 axb4 Rxal 16 Nxal Ne6 17 Kd2 c6 18 f3 Ke7 19 Nb3 Rh8 20 Be2 Rd8+ 21 Kc2 h4 22 Ral Nh5 23 Bfl Ng5 24 Raj h3 25 Na5 Kf6 26 Ne2 hxg2 27 Bxg2 Nf4 28 Nxf4 exf4 29 Ra8 Rh8 30 h3 Kg7 31 c5 Ne6 32 Rb8 Nc7 33 13f1 Ne6 34 Kc3 Rd8 35 Bc4 Ng5 36 Nxb7 RIB 37 Na5 13d7 38 Position before 45 Nd8!

RU7 Bxh3 39 Nxc6 Nxf3 40 b5 g5 41 b6 Bc8 42 Rc7 g4 43 Rxc8 Rxc8 44 b7 Rh8 (Diagram) 45 NdS! g3 46 b8=Q g2 47 Qxf4 g1=Q 48 Qx17+ Kh6 49 Qxf3 Qc1 + 50 Kb3 Qbl+ 51 Ka4 Qal+ 52 Kb5 Black resigns. After 52 . . . Qb2+ 53 Kc6 Rxd8 White wins with 54 Qh3+ Kg7 (54 . Kg5 55 Qg3+) 55 Qg4+ Kf8 56 Qg8+ Ke7 57 01.7 mate. The decisive coup was 45 Nd8! which brilliantly facilitated the advance of White's passed pawn.

On the home front the much vaunted `Chess for Peace' tournament has run into problems. Organised by Mr Aly Amin, a North London café owner, this event was originally publicised as having a £100,000 prize fund with 50 grandmasters compet- ing. The reality was quite different. When the tournament started at the North Lon- don Polytechnic on 1 September, the prize fund had plummeted to less than £10,000, while only five grandmasters turned up, none of them British. In fact, top players John Nunn, Murray Chandler, Jim Plas- kett, Ian Rogers (Australian champion) and Igor Ivanov (Canadian champion) had migrated to the British Isles Open Cham- pionship at Swansea. Of this, more later.

ECO Safaris are organising package tours to the Seville world championship match during October and November. Those interested in watching Kasparov and Karpov slug it out for the fourth time should ring 01-370 5032.