Author: Uri Blass
Date: 15:19:51 07/20/04
Go up one level in this thread
On July 20, 2004 at 11:36:05, Omid David Tabibi wrote: >http://www.cs.biu.ac.il/~davoudo/pubs/ecmx.epd > >Remaining positions that are still unclear (the winning line is not clear): >4r2k/3n1Qpp/1pRP1p2/p4P2/1p1P2P1/6rP/P3q1B1/6RK w - - bm Qe6; id "ECM.624"; >Isn't 1.Rc2 at least as good as Qe6? Yes Seems that Rc2 is better than Qe6 >r1b2rk1/1pq2ppp/p1p1p3/2n1P3/2N2P2/3B4/PPP3PP/R2Q1RK1 w - - bm Bxh7+; id >"ECM.677"; After some hours of analysis I get the following tree Still needs to prove a win in the line of 3...f5 4.exf6 Ne4 5.fxg7 Qxg7 or maybe there is something better for white after 3...f5 but Fritz seeems to like white after 5...Qxg7(unfortunately it does not give main lines so it is hard to find the reason for fail high of it) [Event "40'/40"] [Site "MyTown"] [Date "????.??.??"] [Round "?"] [White "New game"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "r1b2rk1/1pq2ppp/p1p1p3/2n1P3/2N2P2/3B4/PPP3PP/R2Q1RK1 w - - 0 1"] [PlyCount "27"] [TimeControl "40/2400:0"] 1. Bxh7+ Kxh7 2. Qh5+ Kg8 3. Rf3 Ne4 (3... f5 4. exf6 Ne4 5. fxg7 Qxg7) 4. Re1 b5 (4... Qd8 5. Rd3 Nf6 6. exf6 Qxf6 7. Rh3) (4... g6 5. Qh6 f5 6. Rxe4) 5. Rxe4 bxc4 6. Rh3 f5 (6... Qa7+ 7. Kf1 f5 8. exf6 Rxf6 9. Qh8+ Kf7 10. Rg3) ( 6... f6 7. Qh7+ Kf7 8. Rg3) 7. exf6 Rxf6 (7... Qa7+ 8. Kf1 Rxf6 9. Qh8+ Kf7 10. Rg3 g6 11. Rh3 Ke7) 8. Qh8+ Kf7 9. Rg3 Qb6+ (9... Qa7+ 10. Kf1 g6 11. Rh3 Ke7 12. Rh7+ Rf7 13. Rxf7+ Kxf7 14. f5 g5 15. fxe6+ Bxe6 16. Qh7+ Kf8 17. Qh6+ Kg8 18. Qxe6+) 10. Kf1 g6 11. Rh3 Ke7 12. Rh7+ Rf7 13. Rxf7+ Kxf7 14. f5 * New game [D]r1b2rk1/1p4q1/p1p1p3/7Q/2N1nP2/5R2/PPP3PP/R5K1 w - - 0 1 Analysis by Fritz 8: 6.Ne5 Rf5 7.Qe8+ Rf8 8.Qh5 = (0.00) Depth: 9/9 00:00:00 6.Ne5 Rf5 7.Qe8+ Rf8 8.Qh5 = (0.00) Depth: 9/9 00:00:00 6.Ne5 Rf5 7.Qe8+ Rf8 8.Qh5 = (0.00) Depth: 9/9 00:00:00 6.Ne5 Qh7 7.Qg4+ Qg7 8.Qh5 = (0.00) Depth: 10/24 00:00:00 604kN 6.Ne5 Qh7 7.Qg4+ Qg7 8.Qh5 = (0.00) Depth: 11/28 00:00:02 2893kN 6.Ne5 Qh7 7.Qg4+ Qg7 8.Qh5 = (0.00) Depth: 12/29 00:00:09 12671kN 6.Rd1! = (0.03) Depth: 12/38 00:00:18 24781kN 6.Rd1 e5 7.Nxe5 Bf5 8.Rd4 Qh7 9.Qxh7+ Bxh7 10.h4 Rae8 11.Rd7 b6 = (0.00) Depth: 13/37 00:00:44 60038kN 6.Rd1 e5 7.Nxe5 Bf5 8.Rd4 Qh7 9.Qxh7+ Bxh7 10.h4 Rae8 11.Nd7 Rxf4 12.Rxf4 = (0.09) Depth: 14/41 00:02:10 177653kN 6.Rd1! ² (0.38) Depth: 15/47 00:06:28 535175kN 6.Ne5! ² (0.41) Depth: 15/47 00:07:48 642211kN (, MyTown 21.07.2004) Uri
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.