From: olesen@math.uiowa.edu (Martin Olesen)
Newsgroups: rec.games.chess
Subject: 2 annotated games
Date: 26 Aug 92 21:30:45 GMT
Organization: University of Iowa, Iowa City, IA, USA
Originator: olesen@larch.math.uiowa.edu






         I have just annotated the following 2 games for our State
     Chess Magazine En Passent, so I thought I might as well also
     let the netters benefit from it. Hope you enjoy them.
        
                                            Martin




  IM Igor Khmelnitsky - Martin Olesen

           Philadelphia 1992



 1. e4 c5
 2. c3 d6
 3. d4 Nf6
 4. f3  -          It has been concluded that 4.dxc5 Nc6! 5.cxd6 Nxe4
                   6.dxe7 Qxd1+ 7.Kxd1 Nxf2+ 8.Ke1 Nxh1 9.exf8Q+ Rxf8
                   10.g3 Bf5! followed by 0-0-0 and Rfe8 favors black
                   even though white eventually wins Nh1, and that 4.dxc5 Nc6!
                   5.f3 d5! 6.exd5 Nxd5 7.Bc4 e6 8.Bxd5 Qxd5 is even.
 4. -  cxd4 
 5. cxd4 g6
 6. Nc3 Bg7
 7. Be3 0-0
 8. Bd3 Nc6
 9. Nge2 Nd7!      The only playable plan for black in my opinion, even though
                   a6, either with or witoput kingside castling is encountered
                   normally. Black need to claim a stake in the center with e5,
                   but immidiatly 9.- e5 is bad because after 10.d5 Ne7 is too
                   passive and 10.- Nb4 is answered by Bb1 followed by a3 and 
                   b4 with a dominating position. Both players should note
                   the resulting positions similarity with the Saemisch 
                   variation of the King's Indian. Thus black's idea in the 
                   following is to get a good version of the Saemisch.
 10. Qd2 e5
 11. d5 Nd4!       The point. In fact black has absolutely no problems now.
                   Therefore keeping things fluid with 11.Bc2 might be a better
                   try for white. Black can continue 11.- exd4 12.Nxd4 Nde5
                   13.Bb3 Na5 with interesting tactical play.
 12. Nb5   -       12.Bxd4 exd4 13.Nb5 Qb6 just gives up the black squares, and
                   white is still a long way from winning the pawn on d4.
 12. -   Nxb5
 13. Bxb5 f5       The position is approximately even.
 14. 0-0-0?! fxe4!
 15. Bxd7          14.0-0 would have been much better. Now white has the choice
                   between the text or 15.fxe4 Nf6 16.Nc3 Ng4 17.Bg5 Bf6
                   with advantage to black.
 15. - Bxd7
 16. fxe4 a5
 17. h3 Qh4!       Disturbs the coordination of the white pieces.
 18. Nc3 b5
 19. Qe1 Qe7
 20. h4  b4
 21. Kb1 Rac8+
 22. Ne2 Bb5
 23. Ng1? -        White is expiericing trouble with his e-pawn, but this
                   anti-developing move loses.
 23.  -  Qc7
 24. Nf3  -        Perhaps White missed that 24.Rc1 Bd3+ 25.Ka1 Qxc1+
                   26.Bxc1 Rf1 brings down the house.
 24.  -  Qc2+
 25. Ka1 Qxe4
 26. Ng5 Qxg2
 27. Ne6 Rf3
 28. Bg5 Rf2?!     The two pawn sacrifice has allowed white to activate
                   his pieces somewhat and in looming time trouble black
                   gets confused (the time control were at move 30).
                   The safest win was 28.- Rc2 29.Rg1 (29.Rc1 Rxb2 30.Rc8+
                   Bf8) 29.- Rf1! 30.Rxg2 (30.Rxf1 Rxb2 31.Rd2 Rxd2 
                   32.Bxd2 Bxf1 -+) 30.- Rxe1 31.Rxe1 Rxg2 32.Nxg7 (32.Be7?
                   Bh8! followed by e4) 32.- Kxg7 33.Be7 e4 34.Bxd6 e3
                   with an easy win. The e-pawn ties down the white pieces
                   and black can create another passed pawn on the King side
                   at his leasure. 
 29. Rg1 Qh2
 30. Rh1 Qg2
 31. Rg1  -        Does White escape with a draw? After all 31.- Qf3 is nastily
                   answered by 32.Nd4.
 31.  -  Qf3!   
 32. Nd4 Qxd1+
 33. Qxd1 exd4
 34. Qg4   -       Here Khmelnitsky had the nerve to offer a draw, but White
                   is totally lost. The black pieces are too active.
 34.  -  Rcf8
 35. Rb1   -       Getting ready for d3.
 35.  -  d3
 36. Be7 Re8
 37. Qe6+ -        37.Bxd6 Rxb2 -+
 37.  -  Kh8
 38. Qxd6 d2!      Establishes the deadly threat Bxb2+ and black Queens with
                   check!
 39. Qc5 Re2!      39.- Bxb2+ 40.Kxb2 d1Q+ 41.Qxf2 Qxd5 probably also wins
                   but the text is better. The point is that after 
                   40.Qxb5 Bxb2+ 41.Kxb2 d1Q+ and the rook is protected!
 40. a4 b3!        Not letting the King out of the cage.
 41. Qa3  -        Sigh. I hoped for the pleasure of answering 41.Qg1 with
                   Re4.....
 41.  -  Re1       Undoubtedly there are faster wins, but I calculated
                   the following forced sequence.
 42. Qxb3 Rxb1+
 43. Kxb1 Be2
 44. d6 d1Q+
 45. Qxd1 Bxd1
 46. d7 Bxa4
 47. resigns
      0-1






 Martin Olesen - GM Arthur Bisguier

                  US Open 1992
 
 1. d4  Nf6
 2. Nf3 b6
 3. c4  Bb7                        
 4. Nc3 e6
 5. a3   -          Normally I would play 5.e3 and go for the Nimzo after
                    5.- Lb4 6.Ld3 Se4 7.Dc2 f5 8.0-0 Lxc3 9.bxc3, but
                    these kind of positions have been Bisguiers bread and
                    butter for 45 years. I therefore decided to play the
                    Petrosjan system, which give a much more dynamic
                    position, where each side have to watch out for
                    tactical breakthroughs all the time.
 5. -  d5           This is necessary to prevent 6.d5.
 6. cxd5 Nxd5       I was happily surprised by this. I had expected Bisguier
                    to play the less enterprising but more solid exd5,
                    since in general he prefers classical positions.
                    6. - Nxd5 gives the kind of sharp dynamical play I
                    wanted.
 7. Qc2 Be7
 8. e4 Nxc3
 9. bxc3 c5?!       7. - Be7 and 9. - c5 is an unfortunate combination.
                    The theoretical oracles claim that 7.- Nd7 and 9. - c5
                    is blacks best.
 10. Bb5+! Bc6
 11. Bd3   -        The idea of the Zwischenschach is that the forced
                    10. - Bc6 interferes with the natural coordination
                    of the black pieces (10. - Nc6? 11.Ne5 Rc8 12.Qa4 Qc7
                    13.Bf4 is a bust). Thus it deprives the Knight of the 
                    square c6, makes it harder for black 
                    to exploit an open c-file
                    (because the bishop on c6 is hanging and Rc8 can be
                    bothered by Ba6), and gives the possible breakthrough
                    d5 more force.
 12. 0-0 0-0 
 13. d5! exd5       13.- Bb7 14.c4 is much better for white.
 14. exd5 Bxd5
 15. Bxh7+ Kh8
 16. Be4! Bxe4!     The best defence. I had mainly expected 16.- Nf6
                    17.Bxd5 Qxd5 (17.- Nxd5 18.Rd1 wins immidiately)
                    18.Re1! with a fantastic attacking position.
 17. Qxe4 Nf6
 18. Qh4+ Nh7
 19. Qc4 Bd6!       Prevents whites intended Bf4 and Rad1. Now 19.a4 with
                    some advantage for white might be objectively the best,
                    but I didn't play d5 to sit and massage his Queen side
                    with possible a5 breakthroughs. I wanted his king, and
                    what would be more natural than sacrificing the Queens 
                    rook on h7!
 20. Be3 Qf6
 21. Rad1 Rad8
 22. Rd5 Kg8?       Bisguier doesn't sense the danger. He should have 
                    defended actively with 22.- b5! 23.Qd3 (23.Qxb5 Bxh2+)
                    23.- Bxa3 24.Bxa7 with a complex position. The most
                    likely outcome is an ending with 3 pawns against 2
                    on the King side.
 23. Rh5! g6?       Missing white's main threat. I thought 23.- Qg6 was the 
                    best. Then I intended 24.Qh4 (threatening Ng5) Be7 
                    25.Qh3 (threatening Ne5) f6 (or 25.- Bf6 26.Bg5!) 
                    26.Rh4! with the intention Rg4 and Nh4-f5 with a
                    strong attack. 
 24. Rxh7! Kxh7
 25. Bg5 Bxh2+     
 26. Kh1! Qd6
 27. Qh4+ Kg7
 28. Bh6+  -       The best way to take the rook.
 28.  -   Kg8
 29. Bxf8 resigns  On both Rxf8 and Qxf8 white wins immidiately with
                   Ng5, so 29.- Kxf8 is forced. Then 30.Qh8+ Ke7 31.Re1+ Kd7
                   32.Qxh2 gives an easily won ending.
      1-0
 
                     
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