XIII.OL./Prel./2/5, 1998

XIII.OL./Prel./2/5, 1998

1.d4 Sf6 2.c4 g6 3.Sc3 Lg7 4.e4 d6 5.Le2 0-0 6.Lg5 Sbd7 7.Dc2 h6 8.Le3 e5 9.d5 Sc5 10.h4 c6 11.h5 cxd5 12.cxd5 Da5 13.Ld2 A serious alternative is 13. ..Kf1, which has the advantage of keeping open the d1-h5 diagonal, thus robbing Black of his counterplay based on 16. ..Nh5. 13...Db4 14.f3 Db6 15.hxg6 fxg6 16.Le3 [ 16.Lb5 a6 17.Lc4 Ld7 18.b4 Dxb4!! 19.Sb5 Dxc4! 20.Dxc4 Lxb5 21.Dc3 Sfxe4!! 22.De3 Sd3+ 23.Kd1 La4+ 24.Ke2 Sf4+ 0-1 N. Legky-A. David (Montpellier 1997)] 16...Sh5 17.Tb1 [ 17.Txh5?! gxh5 18.Sb5 Ld7 19.Sxd6 Dxd6 20.Dxc5 However White does not need to take any risk. He can try to improve his position slowly and systematically.] 17...Sf4 18.Lf1 a5 19.Lb5 g5 Black's knights look very active, but they risk also to be driven away. In this case Black must be ready to have sufficient counterplay elsewhere on the board. I would have liked to play 19. ..a4, but unfortunately it does not work.So I was forced to choose the only other active possibility. The text move occasionnally threatens ..g5-g4, even at the cost of a pawn. 20.g3 Sg6 21.Td1 Tf6 Black needs already complicated manoeuvres, just in order to complete his development. Square f8 is evacuated for the knight, who prepares the development ..Bc8-d7. I think this is the right decision. [ 21...g4? 22.Le2! gxf3 23.Sxf3 Lg4 24.Sh2+/- ] 22.Td2 Sf8 23.Tdh2 Ld7 24.De2 Lxb5 25.Sxb5 [ 25.Dxb5 Dxb5 26.Sxb5 Sfd7 27.Tc2 b6 28.g4 ] 25...Sfd7 26.b3 Taf8 27.g4 This is already necessary, since Black was threatening to play himself .. g5-g4. Both sides have now mutual weaknesses : Black's Bg7 is locked up and his Ph6 is weak, whereas White's Pf3 is weak and there are problems to get the Ng1 in an active position. I think that the position is almost balanced. 27...Da6 28.Tf2 Tc8 Square f8 is again evacuated for the knight, who is redeployed to g6. 29.Sh3 Sf8 30.0-0 Sg6 31.Dc4 b6 32.Sa3 Da7 [ 32...Dxc4?? 33.Sxc4+/- ] 33.Kh2 Tcf8 34.Db5 Probably White has nothing better. But after this move I was confident that I would obtain the draw which I was aiming at for many moves. The combination starting with 35. ..h5!! has already been prepared at this stage. 34...Sh4 35.Sg1 h5!! Black is ready to sacrifice a pawn and an exchange, in order to force a draw.Initially I had planned 35. ..Qf7, then 38. ..Qg6 and then only 39...h5. But that appears to be rather slow. White can react in several ways, and I found no forced result. 36.Lxg5 [ 36.gxh5? Df7 37.Lxg5 Sxf3+ 38.Sxf3 Dxh5+-/+ ] 36...hxg4 37.Lxf6 [ 37.Lxh4? Th6 38.Kg3 gxf3 39.Sxf3 Sxe4+ 40.Kg2 Lf6=/+ ] 37...Lxf6 38.fxg4 Sxe4 39.Tc2 Dh7 [ 39...Sg5 40.Txf6! Txf6 41.De8+~~ ] 40.Sh3 Sg5 [ 40...Sg6 41.Kg2 Sh4+ 42.Kg1 Dg7 43.g5 Sxg5 44.Sxg5 Lxg5 45.Txf8+ Dxf8 46.De2 Df5 47.Tc4 Sf3+ 48.Kg2= ] 41.Sxg5 Sf3+ White must now play 42. Kg3, since 42. Kg2 Qh2+ would lead to mate. After 42. Kg3 Black can give perpetual check in various ways. A truly interesting and exciting game. I would like to know if there exist any strong Chess playing programmes, running on the quickest computers, who can find the combination starting with 35. .. h5!! as well as the consequences of this. I mean: can such a programme " see " already at move 34 from White that Black has now a forced draw?! 1/2-1/2

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