Author: Uri Blass
Date: 17:30:15 07/19/04
Go up one level in this thread
On July 19, 2004 at 20:15:19, Uri Blass wrote: >On July 19, 2004 at 09:47:48, Dan Andersson wrote: > >>[D]2bq1b2/1p3k2/1r1p1p1p/pNpP1PpP/P1P3P1/6B1/1P5Q/2K1R3 w - - >> This isn't a complete solution tree. But it contains almost all white manouvers >>that make Re6 a kinch move. >>1.Re6 Bxe6 2.fxe6+ Kg8 3.Qc2 Qe8 4.Be1 Qe7 5.Bc3 Bg7 6.Qg6 Rxb5 7.cxb5 b6 8. >>Bxa5 >> >>MvH Dan Andersson > >The problem is that I suspect that there are many alternative winning moves. >White can play for example 1.Re3 and later Re6 > >Here is my effort with yace to give winning tree that was not succesful. > >I could prove more than +2 after Kg8 >After Ke8 Qc2 the score was only +0.97(maybe I did not give yace to search deep >enough) and when I got back to the root position it cannot find 1.Re6 and >prefers 1.Re3 or 1.b3 with evaluation of +1.0x for white. > >There are lines when white gets a won endgame when programs need a deep search >to find the win. > > > > >[Event "?"] >[Site "?"] >[Date "????.??.??"] >[Round "?"] >[White "New game"] >[Black "?"] >[Result "*"] >[SetUp "1"] >[FEN "2bq1b2/1p3k2/1r1p1p1p/pNpP1PpP/P1P3P1/6B1/1P5Q/2K1R3 w - - 0 1"] >[PlyCount "23"] > >1. Re6 Bxe6 2. fxe6+ Kg8 (2... Ke8 3. Qc2) 3. Qc2 Qe7 4. Be1 Qg7 (4... Ra6 5. >Qg6+ Qg7 (5... Bg7 6. Nc3 Ra8 (6... f5) 7. Ne4 b6 8. Bc3) 6. Qe8 Qe7 7. Qb8) ( >4... Qh7 5. Bxa5) 5. Nc7 Rxb2 (5... Qxc7 6. Bxa5 Rxb2 (6... Qg7 7. Bxb6) 7. >Bxc7 Rxc2+ 8. Kxc2 Be7 9. Kd3 Kf8 10. Ke4 Kg8 11. Kf5 Kg7 12. Bb6) (5... f5 6. >gxf5) 6. Qxb2 Qxc7 7. Qxf6 b6 (7... Qe7 8. Qxe7 Bxe7 9. Bc3) (7... Qg7 8. Qxg7+ >Bxg7 9. Bxa5) (7... Qh7 8. Bc3 Be7 9. Qg6+ Qxg6 10. hxg6) 8. Bc3 Qh7 9. Qg6+ >Qxg6 10. hxg6 Be7 11. Kc2 Bd8 12. Kd3 * > > > >Uri Maybe Qc2 is not the right move after Ke8 and Be1 is better and yace can see +1.1 for white some minutes after Fritz's suggestion (Be1). I also plan to analyze all the position of the original suite with movei at 40 seconds per move and report results tommorow. I will try to compare movei at 40 seconds per move(Athlon64-3000) with the commercial at 10 seconds per move(A3200) After all movei is still significantly weaker than them so I am not sure if movei can perform better. New game [D]3qkb2/1p6/1r1pPp1p/pNpP2pP/P1P3P1/8/1P5Q/2K1B3 b - - 0 1 Analysis by Yace 0.99.87: 3...Rxb5 4.axb5 ± (1.23) Depth: 1 00:00:00 3...Qb8 4.Bxa5 ² (0.52) Depth: 1 00:00:00 3...Qa8 ³ (-0.28) Depth: 1 00:00:00 3...Qa8 ³ (-0.28) Depth: 1 00:00:00 3...Qa8 4.Nc7+ Kd8 5.Nxa8 +- (7.85) Depth: 2 00:00:00 3...Qa8 4.Nc7+ Ke7 5.Nxa8 +- (9.16) Depth: 2 00:00:00 3...Qa8 4.Nc7+ Ke7 +- (9.16) Depth: 2 00:00:00 3...Qb8 4.e7 +- (5.41) Depth: 2 00:00:00 3...Qb8 4.Bxa5 ² (0.52) Depth: 2 00:00:00 3...Qe7 4.Qe2 ² (0.31) Depth: 2 00:00:00 3...Qe7 4.Bxa5 = (0.14) Depth: 2 00:00:00 3...Ra6 4.Qe5 = (-0.01) Depth: 2 00:00:00 3...Ra6 4.Kd1 = (-0.05) Depth: 2 00:00:00 3...Ra6 4.Kd1 = (-0.05) Depth: 2 00:00:00 3...Ra6 4.Kd1 Qe7 ³ (-0.43) Depth: 3 00:00:00 3...Ra6 4.Kd1 Qe7 ³ (-0.43) Depth: 3 00:00:00 3...Ra6 4.Qf2 Qe7 5.Qf5 ³ (-0.30) Depth: 4 00:00:00 3...Ra6 4.Qf2 Qe7 5.Qf5 ³ (-0.30) Depth: 4 00:00:00 3...Ra6 4.Qc2 Qe7 5.Qg6+ Kd8 6.Kd1 ³ (-0.32) Depth: 5 00:00:00 3...Ra6 4.Qc2 Qe7 5.Qg6+ Kd8 6.Kd1 ³ (-0.32) Depth: 5 00:00:00 3...Ra6 4.Qc2 Qe7 5.Qg6+ Kd8 6.Bg3 Rb6 = (-0.25) Depth: 6/16 00:00:00 32kN 3...Ra6 4.Qc2 Qe7 5.Qg6+ Kd8 6.Bg3 Rb6 = (-0.25) Depth: 6/20 00:00:01 35kN 3...Ra6 4.Qc2 Qe7 5.Qg6+ Kd8 6.Bg3 Rb6 7.Nxd6 Rxd6 8.Bxd6 Qxd6 9.Qxf6+ Qe7 ³ (-0.30) Depth: 7/20 00:00:01 72kN 3...Ra6 4.Qc2 Qe7 5.Qg6+ Kd8 6.Bg3 Rb6 7.Nxd6 Rxd6 8.Bxd6 Qxd6 9.Qxf6+ Qe7 ³ (-0.30) Depth: 7/23 00:00:01 78kN 3...Ra6 4.Qc2 Qe7 5.Qg6+ Kd8 6.Bg3 Kc8 7.Kd1 Kd8 8.Nxd6 Rxd6 = (-0.17) Depth: 8/23 00:00:01 185kN 3...Ra6 4.Qc2 Qe7 5.Qg6+ Kd8 6.Bg3 Kc8 7.Kd1 Kd8 8.Nxd6 Rxd6 = (-0.17) Depth: 8/23 00:00:01 202kN 3...Ra6 4.Qc2 Qe7 5.Qg6+ Kd8 6.Bg3 Kc8 7.Kd1 Rb6 8.Qf7 = (-0.05) Depth: 9/23 00:00:01 426kN 3...Ra6 4.Qc2 Qe7 5.Qg6+ Kd8 6.Bg3 Kc8 7.Kd1 Rb6 8.Qf7 = (-0.05) Depth: 9/26 00:00:01 455kN 3...Ra6 4.Qc2 Qe7 5.Qg6+ Kd8 6.Bg3 Kc8 7.Kd1 Rb6 8.Nxd6+ Rxd6 9.Bxd6 Qxd6 10.Qxf6 = (-0.11) Depth: 10/26 00:00:01 1075kN 3...Ra6 4.Qc2 Qe7 5.Qg6+ Kd8 6.Bg3 Kc8 7.Kd1 Rb6 8.Nxd6+ Rxd6 9.Bxd6 Qxd6 10.Qxf6 = (-0.11) Depth: 10/29 00:00:02 1142kN 3...Ra6 4.Qc2 Qe7 5.Qg6+ Kd8 6.Bg3 Kc8 7.Kd1 Rb6 8.Be1 Ra6 9.Bg3 Rb6 10.Be1 Ra6 11.Bg3 = (0.00) Depth: 11/32 00:00:02 2619kN 3...Ra6 4.Qc2 Qe7 5.Qg6+ Kd8 6.Bg3 Kc8 7.Kd1 Rb6 8.Be1 Ra6 9.Bg3 Rb6 10.Be1 Ra6 11.Bg3 = (0.00) Depth: 11/32 00:00:02 2830kN 3...Ra6 4.Qc2 Qe7 5.Qg6+ Kd8 6.Bg3 Rb6 7.Kd1 Kc8 8.Be1 Ra6 9.Bg3 Rb6 10.Be1 Ra6 11.Bg3 Rb6 = (0.00) Depth: 12/36 00:00:04 6484kN 3...Ra6 4.Qc2 Qe7 5.Qg6+ Kd8 6.Bg3 Rb6 7.Kd1 Kc8 8.Be1 Ra6 9.Bg3 Rb6 10.Be1 Ra6 11.Bg3 Rb6 = (0.00) Depth: 12/36 00:00:05 6940kN 3...Ra6 4.Qc2 Qe7 5.Qg6+ Kd8 6.Bc3 Bg7 7.Qh7 Qf8 8.Kd1 Ke7 9.Qf5 Qe8 10.b3 = (0.07) Depth: 13/39 00:00:15 20698kN 3...Ra6 4.Qc2 Qe7 5.Qg6+ Kd8 6.Bc3 Bg7 7.Qh7 Qf8 8.Kd1 Ke7 9.Qf5 Qe8 10.b3 = (0.07) Depth: 13/39 00:00:16 21915kN 3...Ra6 4.Nc3 Qe7 5.Ne4 Kd8 6.Qf2 f5 7.gxf5 Bg7 8.f6 Bxf6 9.Nxf6 Qxf6 10.Qxf6+ Kc8 ² (0.47) Depth: 14/45 00:00:44 54827kN 3...Ra6 4.Nc3 ² (0.47) Depth: 14/45 00:00:48 60752kN 3...Ra6 4.Nc3 ² (0.47) Depth: 14/45 00:00:53 65577kN 3...Ra6 4.Qc2 Qe7 5.Qg6+ Kd8 6.Nc3 Qg7 7.Ne4 f5 8.Qxf5 Qe7 9.Qf6 Qxf6 10.Nxf6 Bg7 11.Ng8 Rb6 12.Bxa5 ± (0.76) Depth: 15/51 00:02:44 184620kN 3...Ra6 4.Qc2 Qe7 5.Qg6+ Kd8 6.Nc3 Qg7 7.Ne4 f5 8.Qxf5 Qe7 9.Qf6 Qxf6 10.Nxf6 Bg7 11.Ng8 Rb6 12.Bxa5 ± (0.76) Depth: 15/51 00:02:52 193207kN 3...Ra6 4.Qc2 Qe7 5.Qg6+ Kd8 6.Nc3 Qe8 7.Qxe8+ Kxe8 8.Ne4 Be7 9.Ng3 Bf8 10.Nf5 Rb6 11.Kc2 Ra6 12.Bc3 Be7 13.Nxh6 ± (1.10) Depth: 16/57 00:05:46 383179kN 3...Ra6 4.Qc2 Qe7 5.Qg6+ Kd8 6.Nc3 Qe8 7.Qxe8+ Kxe8 8.Ne4 Be7 9.Ng3 Bf8 10.Nf5 Rb6 11.Kc2 Ra6 12.Bc3 Be7 13.Nxh6 ± (1.10) Depth: 16/57 00:07:07 469071kN (, MyTown 20.07.2004) Uri
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