Author: Kurt Utzinger
Date: 15:07:58 04/09/02
Match Ant 6.06 vs Sjeng 12.11
WinBoard 4.2.5 GUI, ponder=off
P3 650/128, 32 MB hashtables
4-men and partly 5-men tablebases
time control: 40'/40
[D] r3kb1r/NpR2pp1/pB1pp3/3bnPPp/q7/4Q3/PPP1B3/2KR4 w kq - 0 26
Game 2: Sjeng 12.11 vs Ant 6.06, after 25...Qa4, befor 26.c4!!
[Event "Ant606_Sjeng1211 P3 650/32 40'/40"]
[Site "Wetzikon"]
[Date "2002.04.08"]
[Round "1"]
[White "Ant 6.06"]
[Black "Sjeng 12.11"]
[Result "0-1"]
[ECO "E12"]
[PlyCount "154"]
{Match Ant 6.06 vs Sjeng 12.11 WinBoard 4.2.5 GUI, ponder=off P3 650/128, 32
MB hashtables 4-men and partly 5-men tablebases time control: 40'/40} 1. d4
Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Qc2 {
White last book move} 7... Nxc3 {Black last book move} 8. Qxc3 Nd7 9. Bg5 f6
10. Bh4 {Would this bishop not have been better placed on f4?} 10... Bd6 11. e3
Qe7 12. Be2 O-O 13. O-O c5 {
Sjeng tries in due time to equalize white's superiority in the centre.} 14. Qd2
{There was no need for this retreat of the queen. White should go for the
exchange of the dark squared bishops by 14.Bg3} 14... Rac8 15. Rac1 Rfd8 16.
Qd1 {White does nothing for his development and the threat Qd1-a4 is less
worth. 16.Rfd1 was the logical move.} 16... Bc7 {To voluntary blockade the
c-file looks somewhat strange. If Black want's to move his bishop, then he
should have played 16...Bb8 to protect the a-pawn in case of the coming Qa4.}
17. Qa4 cxd4 {Under the circumstances, I would have preferred 17...a6,
preparing b6-b5 and practically forcing his opponent to the exchange d4xc5.}
18. exd4 {A dynamic solution in so far as White is prepared to get an isolated
opens the e-file for his rook to put pressure on black's weakness e6.} 18... a5
{Not at all necessary. Why not 18...Nf8 with the idea to transpose this knight
to g6 with the prospect to find a nice place on f4? After 18...Nf8 19.Qxa7
Black wins a piece with 19...Bxf3 since 20.Bxf3 is refuted by 20...Bxh2+.} 19.
Qb5 Nf8 20. Rfd1 Ng6 21. Bg3 Bxg3 22. hxg3 Qd6 23. Re1 Nf8 24. Qd3 Rxc1 25.
Rxc1 Rd7 {And now Black is slightly better, as it is easier to put pressure on
d4 than white's possibility to exert pressure against e6.} 26. Kf1 {
26.Qb5 is a more active try.} 26... Kf7 27. Rd1 {
White should not give up the c-file.} 27... Rc7 28. Re1 Kg8 29. Nd2 {
Not a bad plan and offering the possiblity to jump either to c4 or e4.} 29...
Rd7 30. Nc4 Qc7 31. Kg1 Rd8 32. Qb3 {In my opinion 32.Qc3 or 32.Ne3 would have
been better moves. It is true, White gets rid of his isolated pawn but on the
contrary allows Black to obtain an active position.} 32... Rxd4 33. Nxb6 Re4
34. Kf1 Re5 {As one can see, White has difficulty in finding a good move. 35.
Bf3 loses on account of 35...Ba6 and another move with the bishop is replied
with Bxg2.} 35. f3 Qb8 36. Nc4 Rg5 37. Rc1 {If 37.g4 so Rxg4} 37... a4 38. Qb4
Qc7 {Sjeng misses the strong 38...Qxg3, thus losing his advantage.} 39. Rc3 Bc6
40. Qb6 {Possible and rather strong moves are also 40.Qd6 or 40.Ne3.} 40... Qd7
41. f4 {Another interesting move was 41.Ne5} 41... Rb5 42. Qa6 Rb8 43. Nb6 Qe8
44. Kg1 Ng6 45. Bh5 {In the meantime, things have changed and it is White to
have a slight advantage due to his better placed pieces.} 45... Bb5 46. Qa7 Qd8
47. Rc7 {This all looks very strong and nearly decisive.} 47... Ne7 48. Kh2 {
What a pity: Ant overlooks the strong 48.Nxa4} 48... Kh8 49. Bf3 Nf5 50. Be4
Qg8 51. Bxf5 exf5 52. Rxg7 Qxg7 53. Qxb8+ Qg8 54. Qc7 Qe8 55. Qc2 Qc6 56. Qxc6
Bxc6 57. Nc4 Kg7 58. Ne3 Be4 59. Nd1 Kf7 60. Nc3 Bc2 61. Kg1 Ke7 62. Kf1 h5 63.
Ke1 Kd6 64. Ke2 {Why not 63.Kd2} 64... Kc5 65. Kd2 Bb3 66. Kd3 Bc4+ 67. Ke3 Bb3
68. Ne2 Bd5 69. Nd4 Kc4 70. Nxf5 Kb3 71. Ne7 {Much better of course 71.Kd4 in
order to bring his king to the queenside pawns as soon as possible.} 71... Bxg2
72. f5 {After this move, the game ist lost. The only trial was 72.Kd4 when is
is still not quite sure that Black can win the endgame.} (72. Kd4 Kxb2 73. Nf5
Kxa3 74. Kc3 Bd5 75. Ne3 Bf7 76. Nc2+ Ka2 77. Kb4 Kb2 78. Na3 Bb3) 72... Kxb2
73. Kd2 Kxa3 74. Kc3 Bb7 75. Ng6 Ka2 76. Nf4 a3 77. Ne2 Be4 {White resigns} 0-1
[Event "Ant606_Sjeng1211 P3 650/32 40'/40"]
[Site "Wetzikon"]
[Date "2002.04.09"]
[Round "2"]
[White "Sjeng 12.11"]
[Black "Ant 6.06"]
[Result "1-0"]
[ECO "B81"]
[PlyCount "77"]
{Match Ant 6.06 vs Sjeng 12.11 WinBoard 4.2.5 GUI, ponder=off P3 650/128, 32
MB hashtables 4-men and partly 5-men tablebases time control: 40'/40} 1. e4
c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g4 h6 7. h4 Nc6 8. Rg1 {
White last book move} 8... h5 9. g5 Ng4 {Black last book move} 10. f3 {
A novelty made by Sjeng?} 10... Qb6 11. Bb5 Nge5 12. Rg3 {I had expected 12.
Rf1 but the text move chosen by Sjeng 12.11 seems to be stronger.} 12... Ng6 {
Can this be good, should Black not do something for his development and try to
clear the situation in the centry. For me, 12...Bd7 or 12...a6 looks quite
natural.} 13. f4 Nxh4 {Ant 6.06 ist too materialistic and again losing time
with the capture of this unimportant pawn.} 14. Be3 Qc7 15. Qd2 Bd7 16. Be2
Nxd4 17. Bxd4 Ng6 18. Nb5 Qd8 {
Black has stilll not castled and is behind in development.} 19. Rc3 Bc6 20. f5
{Sjeng 12.11 plays a very agressive chess.} 20... Ne5 21. O-O-O a6 22. Na7 {
A surprising decision, as there is no return for this knight.} 22... Bxe4 23.
Qe3 Bd5 24. Bb6 {White, who is already two pawns down, must hurry in order not
to give Black the time to develop and bring his pieces into play. With the
text move, Sjeng puts his fingers on Black's weaknesses on the queenside.}
24... Qd7 25. Rc7 Qa4 {A nice position where one must visually admit that
White has clear advantage. But how to exploit this advantage. Sjeng 12.11
finds a fantastic solution, namely 26.c4 although 26.Qc3 did also come into
consideration.} 26. c4 Bxc4 27. Rd4 {
Again an very intersting move of Sjeng 12.11.} 27... Qb4 28. Rdxc4 Qe1+ {
If 28...Nxc4 29.Bxc4 and White wins in a couple of moves.} 29. Kc2 Nxc4 30.
Rxc4 e5 {Ant 6.06 cannot do much. After 30...Be7 32.Rc7 Bd8 White has a nice
win with the rook sacrifice 32.Rxf7} 31. Qe4 Be7 {What else?} 32. Rc8+ Rxc8+
33. Nxc8 {Threatening Bb5 followed by Qxe1. White has a clear won position.}
33... O-O 34. Nxe7+ Kh8 35. Qf3 Qh4 36. Qxh5+ Qxh5 37. Bxh5 e4 38. f6 g6 39.
Bxg6 {Black resigns. Indeed a fantastic game of Sjeng 12.11.} 1-0
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