Author: Vincent Lejeune
Date: 23:25:00 09/20/04
Go up one level in this thread
On September 20, 2004 at 18:10:09, Vincent Lejeune wrote: >On September 20, 2004 at 10:53:42, Daniel Jackson wrote: > >>On September 19, 2004 at 17:46:14, Vincent Lejeune wrote: >> >>>On September 19, 2004 at 16:13:16, Daniel Jackson wrote: >>> >>>>On September 19, 2004 at 02:21:18, Dann Corbit wrote: >>>> >>>>>On September 19, 2004 at 02:11:37, Dann Corbit wrote: >>>>> >>>>>>On September 18, 2004 at 15:59:24, Daniel Jackson wrote: >>>>>> >>>>>>>[D]rnbqkbnr/qqqqqqqq/8/8/8/8/QQQQQQQQ/RNBQKBNR w >>>>>> >>>>>>So far, on ply 3 (85,070,720 nodes) Shredder 7.04 on a 2.2 GHz 64 bit AMD >>>>>>machine with 400 MB hash -- likes Qf2xf7+ with a score of +10.15 >>>>>> >>>>>>I set it for 100,000 seconds and we'll see what it says on Monday. >>>>> >>>>>Finished ply 4 in about 11 minutes (br.f.~3) with the same key move and a score >>>>>of about +9 pawns. >>>>> >>>>>I estimate that it will finish ply 8 or 9. >>>> >>>>I appreciate the effort! Thank You! I don't know if anyone has tried or found a >>>>solution to this problem? >>> >>>I'll let TheKing (the emperor of chechmate) think overnight (may be more) on it, >>>after 1.Qaxf7 Qxf7 >> >>Thanks Vincent! >> >>I think you may find the mate very deep, but I believe 1.Qaxf7 is most likely >>the *key* move...for the shortest route to a long mate. Maybe no program can >>find a mate this deep, and no human OTB? > > >Bad news, I let TK overnight on the position , when I go to work, I checked the >analysis : no mate (the line was : 1.Qaxf7+ Qxf7 2.Rxa7 ... score +8), I decided >to let the comp think until i go back from work, 9h later, when I checked the >engine come back to depth 1 !! >I decide to restart the analysis for this night after 1.Qaxf7+ Qxf7 2.Rxa7... After 8 hours (and let it 8 more hours) [d]rnbqkbnr/Rqqqqq1q/8/8/8/8/1QQQQQQQ/1NBQKBNR b Kkq - 0 2 Time Depth Score Positions Moves 7:14 1/7 8.34 82563323 2...Qcxc2 3.Q1xc2 Qxa7 4.Qhxh7 Qaxf2+ 5.Qxf2 Rxh7 6.Rxh7 Qxf2+ 7.Kxf2 15:56 1/8 9.20 188717489 2...Qcxc2 3.Q1xc2 Qxd2+ 4.Bxd2 Rxa7 5.Qhxh7 Rxh7 6.Rxh7 Qxf2+ 7.Qxf2 Qxe2+ 8.Qxe2+ Be7 35:56 1/8 9.07 449544072 2...Qcxh2 3.Rxb7 Qxf2+ 4.Qxf2 Qxd2+ 5.Nxd2 Qxf2+ 6.Kxf2 Qf7+ 7.Ndf3 Bxb7 8.Qxd8+ Kxd8 9.Qxe7+ Nxe7 10.Rxh8 1:00:46 1/9 11.34 803963638 2...Qcxh2 3.Rxb7 Bxb7 4.Rxh2 Bxg2 5.Qxd7+ Nxd7 6.Rxh7 Rxh7 7.Qxf7+ Rxf7 8.Bxg2 1:40:41 1/9 10.39 1393340012 2...Qxg2 3.Qhxg2 Rxa7 4.Rxh7 Rxh7 5.Qxf7+ Rxf7 6.Qxg8 Qxd2+ 7.Qdxd2 Qxc2 8.Qbxc2 Bd7 9.Qxe7+ Qxe7+ 10.Be2 3:21:39 1/10 11.05 2897968999 2...Qxg2 3.Qhxg2 Rxa7 4.Qxh8 Qhf5 5.Qcxf5 Qdxf5 6.Qxf5 Qxd2+ 7.Nxd2 Bxf5 8.Qhxg8 Qxg8 9.Qxg8 Nc6 10.Ngf3 Qb6
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