|
Deep Sjeng beta - Chess Tiger 15
Open Dutch CC 2002 Leiden NED (2), 19.10.2002
[Annotation by Jeroen Noomen and Gian-Carlo Pascutto]
1.d4 d5 2.c4 Nc6 JN: One of the variations I prepared for this tournament. This one was actually meant for Fritz, but since it was not participating I decided to use it right away. The Chigorin has become popular mostly due to Morozevich and is a hard opening to play against. 3.cxd5 Qxd5 4.e3 e5 5.Nc3 Bb4 6.Bd2 Bxc3 7.Bxc3 JN: Our 4th round opponent Warp played 7. bxc3 here. 7...exd4 8.Ne2 Nf6 9.Nxd4 0-0 JN: And Sjeng left preparations, which is quite fast for a variation this sharp. GCP: Not being a great expert in openings, I had neither time nor ability make extended openings preparations while the engine was still fully in development, and relied on the engines own play to make it through this minefield. 10.Nb5 Qg5 11.h4 Qh6 JN: An improvement by Morozevich, 11. .. Qg6 used to be the main variation. That one is good for white though, so the text move was discovered. 12.Nxc7?! [JN: Extremely sharp. Safer is 12.Be2 Rd8 13.Qc2 Nd5 14.Rd1 Be6 with a position that is about equal. GCP: Deep Sjeng tends to prefer sharp active positions rather than safer but duller lines, so this was no surprise.] 12...Bg4 13.Qb3 Rad8 JN: Another pawn sacrificed to keep the king in the center. Tiger is still playing from book here. 14.Qxb7 Ne4 15.Bb5 Bd7 16.Be2! [JN: Deep Sjeng finds the only move! Everything else is either bad or lost. 16.Nd5 Nd6 17.Qa6 Nb8 18.Nf6+ gxf6 19.Qxd6 Bxb5 20.Qxf6 Qxf6 21.Bxf6 Rd7 JN: with advantage for black, Marcelin-Conquest, Noyon 2001.] 16...Qg6 17.0-0 [JN: Perhaps better is 17.Bf3 Nc5 18.Qb5 Nb4! 19.Qc4 Nc2+ 20.Ke2 Nxa1 21.Rxa1÷] 17...Nxc3 18.bxc3 Nd4! JN: Thanks to the threat Bc6 black wins back material and is left with a slightly better position. 19.Bf3 Nxf3+ 20.Qxf3 Bc6 JN: Here Chess Tigers book ended! GCP: In the preceding moves Deep Sjeng found all the traps Jeroen laid, but also used a lot of time to figure out the correct defenses. The real fight started now with Deep Sjeng having more than half an hour time disadvantage, and a slightly worse position. It's good that Jeroen is on our side now! 21.e4 Bxe4 22.Qg3 Qc6 JN: Now white's knight on c7 is in trouble and to save it, white must sacrifice the pawn on g2. 23.Rad1 Bxg2 24.Rxd8 Rxd8 25.Re1 [25.Qxg2 Qxc7 26.Qg3 JN: also leads to a black advantage.] 25...Be4?! [JN: Throws away most of the advantage, better was 25...Bf3! GCP: I'm not so sure there was a significant advantage - Deep Sjeng thinks both moves only give black minor winning chances, and would play Be4 itself.] 26.Qe5 Qg6+ 27.Qg3 Bc6 [JN: Weakens the black pawnstructure, but the alternatives are no better and don't seem to lead to anything more than a draw either: 27...Qf5 28.Qg5 Qxg5+ 29.hxg5 Bc6 30.Na6; 27...Qxg3+ 28.fxg3 Bc6] 28.Qxg6 hxg6 29.Na6 f6 30.Re7 Rd1+ 31.Kh2 Rd2 32.Kg3 Rxa2 JN: Wins a pawn, but gives Sjeng the possibility to trade down to a dead drawn ending. There was nothing better left though. GCP: It was striking that Tiger evaluated this as a solid pawn advantage for black, whereas Sjeng understood that this is only a draw and had a much lower score. 33.Nb4 Ra3 34.Nxc6 Rxc3+ 35.f3 Rxc6 36.Rxa7 JN: I decided to play on a little, of course without success. 36...Rc8 37.Rb7 Kh7 38.Rd7 Kh6 39.f4 Rc3+ 40.Kg2 Rc4 41.Kf3 Rc2 42.Kg3 Rb2 43.Rc7 Rb3+ 44.Kg2 Ra3 45.Rd7 Rc3 46.Ra7 Re3 47.Rd7 Ra3 48.Rc7 Rb3 49.Ra7 Rd3 50.Rc7 f5 51.Re7 Rc3 52.Rd7 ½-½
Sjeng - Goliath [B22]
10. WCCC 2002 Maastricht (1), 06.07.2002
Goliath is a well known program that excels by a very high search speed - over 4 million moves per second in this game. The version which played in this game had additional pruning which allowed it to search over 20 moves deep during the game. Of course, all that power is of no use if the program does not understand positional play, as my opponent was to find out the hard way...
1.e4 c5 2.c3 Nf6 3.e5 Nd5 4.d4 cxd4 5.Nf3 Nc6 6.Bc4 Nb6 7.Bb3 d6 8.exd6 Qxd6 9.Na3 dxc3 10.Qxd6 exd6 11.Nb5 cxb2 We leave theory now. Black is a full two pawns up, but white has more active pieces. Together with black's weak d6 pawn, Sjeng considers this sufficient compensation. My opponent evaluated his position as winning - after all, he's 2 pawns up, isn't he? 12.Bxb2 Rb8 13.Ng5 Be6 14.Nc7+ Ke7 15.Ncxe6 fxe6 16.Nxe6 Well, maybe only 1 pawn. Notice how Sjeng trapped black's king in the center, has the bishop pair, on the ideal squares even and perfect lines for it's rooks. My opponent still thought he was winning. Sjeng understands that black can at best draw here.
1r3b1r/pp2k1pp/1nnpN3/8/8/1B6/PB3PPP/R3K2R b KQ - 0 16
16...Ne5 17.0-0 Nec4 18.Bd4 Kxe6 19.Bxb6 Rc8 20.Bxa7 d5 21.Rae1+ Kd7 22.Bd4 Well, maybe black is no longer a pawn up, but now he has a passer. His king is horribly placed though, and he's still got two undeveloped pieces. Those pawns aren't looking too strong either. Deep Sjeng already thinks white has a pawn advantage here. 22...Rc6 23.Re2 Rh6 Panic - the opponent sees it's not so good after all. 24.Ba4+ Kc7 25.Rc1 The rest of the game is a slaughtering. 25...Rh4 26.Bxg7 Bxg7 27.Re7+ Kd6 28.Rxg7 Ne5 29.Bb5 b6 30.a4 Rd4 31.g3 Nc4 32.f4 Note how horrible black's piece coordination is. 32...h5 33.Rg6+ Kc7 34.f5 Rf8 35.Re1 Kd8 36.f6 Nd6 37.Re6 Nc4 38.Rg7 Rd2 39.Ra7 1-0
In April 2003 Deep Sjeng 1.0 played a short match against GM Pablo Zarnicki. The match was played over the Internet on ICC. Playing tempo was game in 60 minutes. The match was played over 6 round + 2 initial warming up rounds. Final result:
Deep Sjeng 1.0 vs. GM Pablo Zarnicki
Match result: 4,5 - 1,5
The games:
[Event "Warmup game G/60"]
[Site "Internet Chess Club"]
[Date "2003.03.12"]
[Round "1"]
[White "Zarnicki, Pablo"]
[Black "Deep Sjeng"]
[Result "1-0"]
[ECO "C68"]
[WhiteElo "2530"]
[PlyCount "111"]
[EventDate "2003.??.??"]
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O Qd6 6. Na3 Qe6 7. b3 f6 8. d4
exd4 9. Nxd4 Qg4 10. Nc4 Qxd1 11. Rxd1 Bd7 12. e5 c5 13. Nf3 O-O-O 14. Bb2 Be7
15. Ne3 Be6 16. Rxd8+ Bxd8 17. exf6 Bxf6 18. Be5 Ne7 19. Bxf6 gxf6 20. Rd1 Rd8
21. Rxd8+ Kxd8 22. g4 Kd7 23. c4 Kd6 24. Kg2 Bd7 25. Kg3 Bc6 26. h4 Ke6 27. h5
h6 28. Kf4 Bxf3 29. Kxf3 Ke5 30. Nc2 Nc6 31. Ke3 f5 32. f4+ Kf6 33. Kf2 fxg4
34. Ne3 Nb4 35. Nxg4+ Kg7 36. a4 Nc2 37. Kf3 Nd4+ 38. Ke4 Nxb3 39. f5 Nd4 40.
Ke5 Nf3+ 41. Ke6 Nd4+ 42. Kd7 b6 43. Kxc7 b5 44. cxb5 axb5 45. f6+ Kf7 46. a5
b4 47. a6 b3 48. Ne5+ Ke6 49. Nc4 Nb5+ 50. Kc6 Na7+ 51. Kxc5 Nc8 52. Kb4 Kxf6
53. Kxb3 Ke6 54. Kb4 Kd5 55. Kb5 Kd4 56. Na5 {Black resigns} 1-0
[Event "Warmup game G/60"]
[Site "Internet Chess Club"]
[Date "2003.03.20"]
[Round "2"]
[White "Deep Sjeng"]
[Black "Zarnicki, Pablo"]
[Result "1-0"]
[ECO "C42"]
[BlackElo "2530"]
[PlyCount "63"]
[EventDate "2003.??.??"]
1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. O-O Be7 8. c4
Nf6 9. Nc3 O-O 10. h3 Nb4 11. Be2 Bf5 12. a3 Nc6 13. Ne5 Be6 14. Nxc6 bxc6 15.
Bf3 Qd7 16. Qa4 Rfe8 17. Re1 Rab8 18. b4 Red8 19. Bf4 Ra8 20. Re3 h6 21. cxd5
Nxd5 22. Nxd5 cxd5 23. Qxd7 Rxd7 24. Rc3 a5 25. b5 Ra7 26. Rac1 Bd8 27. Rc6 Bf6
28. Bxc7 Bxd4 29. b6 Rb7 30. Be2 Bb2 31. R1c2 Bxa3 32. Ba6 {Black resigns} 1-0
[Event "Match G/60"]
[Site "Internet Chess Club"]
[Date "2003.04.01"]
[Round "1"]
[White "Zarnicki, Pablo"]
[Black "Deep Sjeng"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "2530"]
[PlyCount "108"]
[EventDate "2003.04.??"]
1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 O-O 8.
Be2 d6 9. O-O Bd7 10. Qd2 Nxd4 11. Bxd4 Bc6 12. Bd3 Nd7 13. Bxg7 Kxg7 14. Rae1
Qa5 15. Re3 Rac8 16. Rh3 Nf6 17. Qh6+ Kg8 18. g4 Qe5 19. g5 Nh5 20. Be2 Bd7 21.
Rh4 Qg7 22. Nd5 Rfe8 23. Bxh5 Qxh6 24. gxh6 gxh5 25. b3 f6 26. f4 b5 27. cxb5
Bxb5 28. Re1 Kf7 29. Rxh5 Rc5 30. Rh3 Rg8+ 31. Rg3 Rxg3+ 32. hxg3 Bc6 33. Rd1
f5 34. b4 Rc2 35. exf5 Rxa2 36. Rd4 Ra1+ 37. Kf2 Ra2+ 38. Ke3 Ra3+ 39. Kf2 Ra2+
40. Kf3 Rb2 41. Kg4 Rb3 42. Kh4 Rb1 43. g4 Bxd5 44. Rxd5 Rxb4 45. Ra5 Rxf4 46.
Rxa7 Kf6 47. Ra8 e6 48. Rf8+ Ke7 49. Rh8 exf5 50. Kg5 Rxg4+ 51. Kxf5 Rg1 52.
Rxh7+ Kf8 53. Ra7 Kg8 54. Rb7 Rg2 {Game drawn by mutual agreement} 1/2-1/2
[Event "Match G/60"]
[Site "Internet Chess Club"]
[Date "2003.04.03"]
[Round "2"]
[White "Deep Sjeng"]
[Black "Zarnicki, Pablo"]
[Result "1-0"]
[ECO "E00"]
[BlackElo "2530"]
[PlyCount "93"]
[EventDate "2003.04.??"]
1. d4 Nf6 2. c4 e6 3. g3 c5 4. Nf3 cxd4 5. Nxd4 Qc7 6. Nc3 Qxc4 7. e4 Qb4 8.
Ndb5 Na6 9. Bg2 d5 10. exd5 Nxd5 11. Bxd5 exd5 12. Qxd5 Be7 13. a3 Qg4 14. O-O
O-O 15. Re1 Bf6 16. Be3 Bxc3 17. bxc3 Qe6 18. c4 Qxd5 19. cxd5 b6 20. Rac1 Bd7
21. Nc7 Nxc7 22. Rxc7 Rfd8 23. Bg5 f6 24. Bd2 Rac8 25. Rxa7 Ra8 26. Rc7 Rac8
27. d6 Rxc7 28. dxc7 Rc8 29. Bf4 Kf7 30. f3 b5 31. g4 g5 32. Bd6 Re8 33. Rd1
Be6 34. Kf2 Ra8 35. h3 h6 36. Re1 Re8 37. Rb1 Bd7 38. Rd1 Be6 39. Rd3 Rc8 40.
Ke3 Bc4 41. Rd4 Ke6 42. Bg3 Bd5 43. f4 gxf4+ 44. Bxf4 Ra8 45. Kd2 Bb7 46. Rd6+
Ke7 47. Rb6 {Black resigns} 1-0
[Event "Match G/60"]
[Site "Internet Chess Club"]
[Date "2003.04.08"]
[Round "3"]
[White "Zarnicki, Pablo"]
[Black "Deep Sjeng"]
[Result "1/2-1/2"]
[ECO "B35"]
[WhiteElo "2530"]
[PlyCount "54"]
[EventDate "2003.04.??"]
1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 Qa5 8.
O-O O-O 9. Nd5 Nxd5 10. exd5 Nxd4 11. Bxd4 e5 12. dxe6 dxe6 13. Bxg7 Kxg7 14.
Qd4+ e5 15. Qe3 Bf5 16. Rad1 f6 17. c3 Rad8 18. h3 Rfe8 19. Bb3 a6 20. Rfe1
Rxd1 21. Rxd1 Rd8 22. Rd2 Qc7 23. Qe1 Rd3 24. Rxd3 Bxd3 25. Qe3 Qd6 26. h4 f5
27. h5 f4 {Game drawn by mutual agreement} 1/2-1/2
[Event "Match G/60"]
[Site "Internet Chess Club"]
[Date "2003.04.10"]
[Round "4"]
[White "Deep Sjeng"]
[Black "Zarnicki, Pablo"]
[Result "1-0"]
[ECO "B24"]
[WhiteElo "2530"]
[PlyCount "73"]
[EventDate "2003.04.??"]
1. e4 c5 2. Nc3 Nc6 3. g3 e6 4. Bg2 Nf6 5. Nge2 d5 6. exd5 exd5 7. d4 cxd4 8.
Nxd4 Be7 9. O-O O-O 10. h3 Re8 11. Re1 h6 12. Bf4 a6 13. Qd2 Qb6 14. Rad1 Qxb2
15. Rb1 Qa3 16. Nxc6 bxc6 17. Rb3 Qc5 18. Na4 Qa7 19. Nb6 Be6 20. Nxa8 Rxa8 21.
Reb1 Ne4 22. Qe2 Qd4 23. Rb8+ Rxb8 24. Rxb8+ Kh7 25. Ra8 Bc5 26. Bxe4+ dxe4 27.
Be3 Qa1+ 28. Kh2 Bxe3 29. Qxe3 Qe5 30. Rxa6 Qf5 31. h4 Qd5 32. Ra7 Qc4 33. c3
Bg4 34. Qd4 Qe6 35. a4 Bh3 36. Rc7 Bf1 37. Qd7 {Black resigns} 1-0
[Event "Match G/60"]
[Site "Internet Chess Club"]
[Date "2003.04.24"]
[Round "5"]
[White "Zarnicki, Pablo"]
[Black "Deep Sjeng"]
[Result "0-1"]
[ECO "B35"]
[WhiteElo "2530"]
[PlyCount "90"]
[EventDate "2003.04.??"]
1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 Qa5 8.
O-O O-O 9. Bb3 d6 10. h3 Bd7 11. f4 Nxd4 12. Bxd4 Bc6 13. Qd3 Rad8 14. Rad1 b5
15. Qe3 b4 16. Nd5 Nxd5 17. exd5 Ba4 18. f5 Bxb3 19. Qxb3 Rc8 20. Rf2 gxf5 21.
Kh1 Bxd4 22. Rxd4 Qc5 23. Rdf4 Kh8 24. Rxf5 f6 25. R5f4 Rg8 26. Qd3 Rg5 27. Rh4
h5 28. Rd2 Re5 29. Re4 Kg7 30. Rxe5 dxe5 31. Qf5 Rd8 32. Rd3 Rxd5 33. Rg3+ Kf7
34. Kh2 e4 35. Qg6+ Ke6 36. Qxe4+ Re5 37. Qa8 Qc7 38. Qg8+ Kd7 39. h4 Qxc2 40.
Qb8 Qe4 41. Kh3 Ra5 42. a3 bxa3 43. bxa3 Qf5+ 44. Kh2 Qb5 45. Qg8 Ra4 {
White resigns} 0-1
[Event "Match G/60"]
[Site "Internet Chess Club"]
[Date "2003.04.29"]
[Round "6"]
[White "Deep Sjeng"]
[Black "Zarnicki, Pablo"]
[Result "1/2-1/2"]
[ECO "B25"]
[WhiteElo "2530"]
[PlyCount "67"]
[EventDate "2003.04.??"]
1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e6 7. Nf3 Nge7 8. O-O
O-O 9. Be3 Nd4 10. Bf2 Nec6 11. Nxd4 Nxd4 12. Rb1 Bd7 13. Ne2 Nxe2+ 14. Qxe2
Bc6 15. c3 Qd7 16. Rfd1 b5 17. d4 c4 18. d5 exd5 19. exd5 Bb7 20. Qd2 Rfe8 21.
h3 a5 22. Re1 Rxe1+ 23. Rxe1 Re8 24. Bb6 a4 25. Re3 Re7 26. g4 h6 27. Bd4 Qe8
28. Rxe7 Qxe7 29. Bxg7 Kxg7 30. Qd4+ Kg8 31. f5 Qg5 32. fxg6 fxg6 33. Kf2 Kf7
34. Qe3 {Game drawn by mutual agreement} 1/2-1/2
|
|
