Author: Mark Young
Date: 19:02:25 03/13/00
Go up one level in this thread
On March 13, 2000 at 20:38:44, Vincent Lejeune wrote: >[D]1r6/2p2pk1/6p1/2QpP1q1/P2P4/5R2/5PP1/6K1 w - - 0 1 > New position 1r6/2p2pk1/6p1/2QpP1q1/P2P4/5R2/5PP1/6K1 w - - 0 1 Analysis by Fritz 6: 1.Rf3xf7+ +- (1.72) Depth: 1/7 00:00:00 1.Rf3xf7+ Kg7-h8 2.Qc5xd5 +- (3.63) Depth: 1/7 00:00:00 1.Rf3xf7+ Kg7-h8 2.Rf7-h7+ Kh8-g8 3.Qc5xc7 +- (3.56) Depth: 2/9 00:00:00 1.Rf3xf7+ Kg7-g8 2.Rf7-g7+ Kg8-h8 3.Rg7-h7+ +- (3.56) Depth: 3/10 00:00:00 1.Rf3xf7+ Kg7-g8 2.Rf7-g7+ Kg8-h8 3.Rg7-h7+ +- (3.56) Depth: 4/11 00:00:00 1kN 1.Rf3xf7+-- +- (3.25) Depth: 5/15 00:00:00 6kN 1.Rf3xf7+ Kg7-g8 2.Rf7-g7+ Kg8-h8 3.Qc5-c2 c7-c5 4.Rg7xg6 +- (3.00) Depth: 5/15 00:00:00 9kN 1.Rf3xf7+-- +- (2.69) Depth: 6/19 00:00:00 25kN 1.Rf3xf7+ Kg7xf7 2.Qc5xc7+ Kf7-e6 3.Qc7-d6+ Ke6-f5 4.Qd6xb8 Qg5-c1+ 5.Kg1-h2 Qc1-f4+ +- (2.28) Depth: 6/19 00:00:00 26kN 1.Rf3xf7+ Kg7xf7 2.Qc5xc7+ Kf7-e6 3.Qc7-d6+ Ke6-f5 4.Qd6xb8 Qg5-c1+ 5.Kg1-h2 Qc1-f4+ +- (2.19) Depth: 7/20 00:00:00 47kN 1.Rf3xf7+ Kg7xf7 2.Qc5xc7+ Kf7-e6 3.Qc7xb8 Qg5-c1+ 4.Kg1-h2 Qc1-f4+ 5.Kh2-h3 Qf4-f5+ +- (2.19) Depth: 8/20 00:00:00 84kN 1.Rf3xf7+ Kg7xf7 2.Qc5xc7+ Kf7-e6 3.Qc7xb8 Qg5-c1+ 4.Kg1-h2 Qc1-f4+ 5.Kh2-h3 Qf4-f5+ +- (2.19) Depth: 9/23 00:00:00 168kN 1.Rf3xf7+ Kg7xf7 2.Qc5xc7+ Kf7-e6 3.Qc7xb8 Qg5-c1+ 4.Kg1-h2 Qc1-h6+ 5.Kh2-g3 Qh6-g5+ +- (2.19) Depth: 10/25 00:00:01 316kN 1.Rf3xf7+ Kg7xf7 2.Qc5xc7+ Kf7-e6 3.Qc7xb8 Qg5-c1+ 4.Kg1-h2 Qc1-h6+ 5.Kh2-g3 Qh6-g5+ +- (2.19) Depth: 11/27 00:00:02 606kN 1.Rf3xf7+-- +- (1.88) Depth: 12/29 00:00:03 1134kN 1.Rf3xf7+ Kg7xf7 2.Qc5xc7+ Kf7-e6 3.Qc7xb8 Qg5-c1+ 4.Kg1-h2 Qc1-h6+ 5.Kh2-g3 Qh6-g5+ ² (0.63) Depth: 12/32 00:00:05 1657kN 1.Qc5-c2 ² (0.66) Depth: 12/34 00:00:11 3376kN 1.Qc5-c2 c7-c5 2.d4xc5 Qg5xe5 3.Qc2-d1 d5-d4 4.c5-c6 Rb8-c8 5.Rf3-d3 Rc8xc6 ± (1.00) Depth: 12/34 00:00:43 12186kN 1.Qc5-c2 c7-c5 2.d4xc5 Qg5xe5 3.Qc2-d1 Rb8-b2 4.Rf3-e3 Qe5-f4 5.Qd1-e1 d5-d4 ± (1.00) Depth: 13/29 00:00:58 16252kN 1.Qc5-c2 c7-c6 2.a4-a5 Rb8-b4 3.a5-a6 Rb4-c4 4.Rf3-c3 Rc4xd4 5.a6-a7 Qg5-d8 ± (1.09) Depth: 14/33 00:02:07 35291kN 1.Qc5-c2 c7-c6 2.a4-a5 Rb8-b4 3.a5-a6 Rb4-c4 4.Rf3-c3 Rc4xd4 5.a6-a7 Qg5-d8 ± (1.03) Depth: 15/34 00:03:58 60738kN (Young, 13.03.2000) > >In this position Junior 6 played 42. Qc2!! all other programs that i've tested >(Crafty 17.07, Hiarcs 7.32, Fritz6 light 3 min on a celeron 450) evaluate Rxf7+ >two pawns above Qc2, but 42. Rxf7+ Kxf7 43. Qxc7+ Ke6 44. Qxb8 seems to be a >very deep forced draw (see line in game below) > >So, how Junior 6 can see this repetition draw : > >- Evaluation (queen against a king in open lines) ? >- Full check extension (each check extend one ply, too big tree explosion in my >sens) ? >- Reduced check extension (one check extend some plies,but this is 32 plies deep >!) ? > >Can someone test this position in junior 6 and give analysis please ? >This would help to understand the mechanism to find 42. Qc2!! > >There's the game with the drawing line : > >[Event "ICS Rated standard match"] >[Site "192.168.0.2"] >[Date "2000.03.12"] >[Round "?"] >[White "Deep Junior"] >[Black "Xie Jun"] >[Result "1-0"] >[ECO "C92"] >[WhiteElo "2666"] >[BlackElo "2647"] >[Annotator "DRAW ???"] >[PlyCount "99"] >[EventDate "2000.??.??"] > >1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 >O-O 9. h3 a5 10. d4 a4 11. Bc2 exd4 12. Nxd4 Nxd4 13. cxd4 d5 14. e5 Ne4 15. >Qe2 Rb8 16. Nc3 Nxc3 17. bxc3 Bd7 18. Qd3 g6 19. Qf3 Be6 20. Bh6 Re8 21. Qf4 >Rb6 22. Re3 Qd7 23. Bd1 b4 24. cxb4 Rxb4 25. a3 Rb2 26. Rc3 Reb8 27. Rac1 R8b7 >28. h4 Rb1 29. h5 Rxc1 30. Qxc1 Bf5 31. Bc2 Bxc2 32. Qxc2 Qg4 33. Qxa4 Rb1+ 34. >Kh2 Rb8 35. Qa7 Rc8 36. hxg6 hxg6 37. a4 Bf8 38. Bxf8 Kxf8 39. Rf3 Kg7 40. Kg1 >Qg5 41. Qc5 Rb8 42. Qc2 (42. Rxf7+ Kxf7 43. Qxc7+ Ke6 44. Qxb8 Qc1+ 45. Kh2 >Qf4+ 46. Kh3 Qh6+ 47. Kg3 Qg5+ 48. Kf3 Qf5+ 49. Ke3 Qe4+ 50. Kd2 Qxd4+ 51. Ke2 >Qc4+ 52. Ke3 Qe4+ 53. Kd2 Qf4+ 54. Ke2 Qc4+ 55. Ke3 Qe4+ 56. Kd2 Qf4+ 57. Kd3 >Qc4+ 58. Kd2 Qf4+) 42... Rb4 43. e6 Rc4 44. Rxf7+ Kg8 45. Qb3 Qc1+ 46. Kh2 Qh6+ >47. Kg3 Qg5+ 48. Kf3 Qh5+ 49. Ke3 Qg5+ 50. Kd3 (50. Kd3 Qd8 51. e7 Qe8 52. Rf8+ >Qxf8 53. exf8=Q+ Kxf8 54. a5) 1-0
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