Klundt-Dorigo, annotated chess game.

Klaus Klundt (IM,2375) - Tommaso Dorigo (CM, 2088)
Mogliano Scacchi 1998

Comments by T.D. and Fritz 5.

1. e4,
Fantastic! I just drew with a 2324, and here's a fat 2375, playing white, and mad for having lost half a point himself in his first game. I decided that I would play the defence I know best, even if it is slightly passive.

1...., Nf6;
2. e5, Nd5;
3. d4, d6;
4. Nf3, Bg4;
5. Be2, e6;
6. 0-0, Be7;
7. h3,
Wow, the IM knows it all! Just kidding... As a matter of fact, before the game I had looked at my database and had found six Alechin defences played with white by Klundt. He seemed to like the four pawns attack, which I like to play as black... Unfortunately he decided on the modern variation this time, throwing away my prepared variations...

7...., Bh5;
8. c4, Nb6;
9. Nc3, 0-0;
10. Be3, d5;
11. c5, Bxf3;
12. gxf3, Nc8;
13. f4, Nc6;
14. b4,
Alas, he does not play 14.f5, which is where I have something in store...

14...., Bh4N;
This move must have been played before, but is unknown to my database. The game J.Benjamin-B.Men (US Ch. 1992) went on 14....a6; 15.a3,Bh4; 16.Bd3,N8e7; 17.Qg4,Ng6; 18.Kh2,f5; 19.Qh5,Be7; 20.Rg1,Qe8 and Joel eventually won after 29 more moves.
More interesting is to know what happens if black takes the b4 pawn: it took me a while to recall over the board why it is better not to. If 14....Nxb4 white can play:
(A) 15.Qb1,a5; 16.a3,Nc6; 17.Qxb7 (17.Bd3,f5; 18.exf6,Bxf6; 19.Bxh7+,Kh8; 20.Qg6,Qe8; 21.Nb5,Qxg6; 22.Bxg6,N8e7; 23.Bc2,Rac8 with a better game for black), N8a7; 18.Rfb1,Qd7; 19.Qa6 (19.Nb5,Rfc8; 20.Qa6,Nxb5; 21.Qxb5,Rcb8; 22.Qd3 looks drawish), Rfb8 with even chances; but better for white is:
(B) 15.Rb1,a5; 16.a3,Nc6; 17.Rxb7,Rb8; 18.Rxb8,Nxb8; 19.f5!, and white has play on both wings and retains the initiative.

15. Kh2,
Correctly, the IM does not accept my invitation to play b5. After 15.b5,N6e7; 16.Bd3,Nf5; 17.Bxf5,exf5; 18.Qf3,c6; 19.bxc6,bxc6; 20.Rfb1,a6; 21.Rb7,Re8; 22.Rab1,g6; 23.Bd2,Re7; 24.R7b2 black has equal chances.

15...., f5;
16.Rg1, N8e7;
17.Rg2, Nxb4;
Now that white has made some commitments to play on the kingside this capture looks safe enough - at least to me. Another possibility was 17....,Ng6; 18.b5,Nce7; 19.Bd3,c6 and the game looks unclear.

18. Qb3, Nbc6;
19. Rag1, Rf7?!;
Not intrinsically a bad move, but certainly less good than the spontaneous 19....,g6. I saw g6, but started to fear ghosts of instant attacks involving Bh5, Qd1, sacrifices on g6 and mate. After 19....,g6 actually white does not have anything better than 20.Qxb7,Rb8; 21.Qa6 with equality, but black does have to look at the following variation, and see how to defend, before playing his 19th:
19....,g6; 20.Bh5?!,b6! (20....,Na5;21.Qd1,b6 -but 21....,Rf7 is still a good defence-; 22.Bxg6,Nxg6;23.Rxg6+,hxg6; 24.Rxg6,Kf7;25.Qh5 and white indeed wins); 21.Qd1,Kh8!(21....,bxc5 loses by the same attack shown in the former variation); and this time the sacrifices in g6 lose for white.

20. Qxb7, Rb8;
21. Qa6, Qc8;
22. Qa4, Rb4;
23. Qd1, g6;
Probably better would have been 23....,Ng6, eliminating once and for all the weakness of the Bh4 (threatened to fall prey of a Qh5), with the possible followup 24.Bb5,Na5; 25.Qh5,Be7 and black is OK.

24. Bb5, Rg7;
25. a3, Rb2;
26. Qa4!,
IM Klundt makes a good display in this game of how to play when the only tangible advantage you have is space. He creates threats on both sides of the board, quickly moving from one side to the other, trying to overload his opponent's pieces. Nevertheless, the position is still balanced, and black still has good prospects if the initiative slips in his hands. But white is trying to create a mating net around the black rook, and good care has to be taken...

26...., Qb7;
27. Rf1,

27...., Kh8?;
Probably the losing move, although there is still lots to fight for. With his last move Klundt prepared Bc1, and I completely overlooked it (yeah, yeah, I was short of time, but I should have seen it). What bothers me is that I HAD seen the strongest move here, and got afraid to play it! A deep pawn sacrifice here was necessary:
27....,a6!!;
(A) 28.Bxa6,Qb3; and now:
(A1) 29.Qxb3,Rxb3;30.Nb1,g5! 31.Rfg1,Ng6; 32.Bc8,Kf7; 33.Bd7,gxf4; 34.Bxc6,fxe3; 35.fxe3,Rxe3;36.a4,h6;37.Rxg6,Rxg6 and the ending should be won for black after 38.Be8+,Kxe8; 39.Rxg6,Bg5.
(A2) 29.Rc1,Qxa4;30.Nxa4,Ra2;31.Rc3,Kf7!;32.Bd3,h6;33.Rb3,Na5;34.Rc3,g5; 35.Bb1,Ra1;36.Bd3,gxf4;37.Bxf4,Ra2 with advantage for black.
(B) 28.Qxa6,Qxa6; 29.Bxa6,Rb3;30.Nb1,g5; with two main options:
(B1) 31.Rfg1,Ng6;32.Bc8,Re7;33.Nd2,Rxa3;34.Nf3,Nd8;35.Nxg5,Bxg5;36.Rxg5,Ra8; 37.h4,Rxc8;38.h5,Rg7;39.hxg6,Rxg6;40.Rxg6+,hxg6;41.Rxg6+,Kf7;42.Rg1,Nc6 where white is a pawn up but the ending can only be won by black.
(B2) 31.fxg5,f4; 32.Bxf4,Nxd4;33.Nd2,Rxa3;34.Bb7,Ndf5;35.Rg4,Kh8;36.Be3,Ng6; 37.Nf3,Bxf2;38.Rxf2,Rxe3;39.Bc8,Rxf3;40.Rxf3,Nxe5;41.Rff4,Nxg4+;42.hxg4,Ne3; 43.Rf8+,Rg8;44.Rxg8+,Kxg8;45.Bxe6+,Kg7;46.Kg3,Kg6;47.Kf3,d4 with a draw.
While all these complex variations should not be taken as definitive truth about the position, they give the flavor of the many possibilities that the 27th black move could open. I cut many branches of my analysis for brevity; the interested reader may well ask for them.

28.Bc1, Nxd4;
Forced, since 28....,Rxb5;29.Qxb5,Qxb5;30.Nxb5,Nc8;31.Be3,a6;32.Nc3,g5;33.Rb1 is an easy win for white.

29.Bxb2, Nf3+;
30.Kh1, c6;
31.Qd1, d4!;
32.Be2,
Better for white would have turned out to be 32.Bc4,Qxb2;33.Nb1,Nd5; 34.Qxf3,Rd7;35.Rfg1, but Klaus correctly thinks that I'm going to resign anyways...

32...., Qxb2;
Better than 32....,dxc3; 33.Bxc3,Nd5; 34.Ba1,Nxf4; 35.Bxf3,Nxg2;36.Bxg2, where white's material advantage is easier to convert in a win due to the simpler position.

33.Na4, Qxa3;
34.Bxf3, resigns?
Actually, resigning here is the worst move of my game. True, playing on a rook down against an International Master looked very humiliating; nevertheless, white still has lots of homework before he can find the way to a win here. I analyzed thoroughly this position with days of CPUtime of Fritz 5 running on my pentium 133, and came to the conclusion that the game is still not decided. Skeptics ? Let's look at some variations.

34....,Rg8!;
(A) 35.Be2,d3; 36.Bf3,Rd8; 37.Qa1,Qb4;38.Nb2,d2; and now:
(A1) 39.Be2,Nd5;40.Nd3,Qc4;41.Rd1,Nc3;42.Rxd2,Nxe2;43.Nb2,Qb5!;44.Qd1,Rxd2; 45.Qxd2,a5;46.Qd6,Kg7;47.Qd7+,Kh6;48.Nd3, and black has compensation for the material.
(A2) 39.Qa2,Qxf4;40.Qc4,Bg5;41.Be2,Nd5;42.Qxf4,Bxf4; with an unclear game (I know, white has a rook for three pawns and this should suffice... The fact is that Fritz insists on saying that it is a balanced position! Now if he does not care for the material, why should I ? HE is the computer...).
(B) 35.Rg3,Rd8;36.Qa1,Qb4;37.Bg2,Bxg3;38.fxg3,d3;39.Rb1,Qa5; with two variations:
(B1) 40.Bf1,d2;41.Bg2,Nd5;42.Bxd5,Rxd5;43.Kh2,Rd8; with unclear play.
(B2) 40.Qa2,d2;41.Qb3,Qb5!?;42.Qxb5,cxb5;43.Nc3,a6;44.Rd1,Rd3;45.Nb1,Rxg3; with a better game for white, although not yet decided.

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Last modified: Fri Jun 9 11:51:03 CDT 2000