Author: Daniel Jackson
Date: 01:51:36 09/22/04
Go up one level in this thread
On September 22, 2004 at 01:28:35, John Merlino wrote: >On September 21, 2004 at 22:56:29, Daniel Jackson wrote: > >>On September 21, 2004 at 21:22:07, John Merlino wrote: >> >>>On September 20, 2004 at 23:18:01, Daniel Jackson wrote: >>> >>>>On September 20, 2004 at 18:36:50, Dann Corbit wrote: >>>> >>>>>On September 20, 2004 at 17:44:57, Daniel Jackson wrote: >>>>> >>>>>>On September 20, 2004 at 12:59:55, Dann Corbit wrote: >>>>>> >>>>>>>On September 18, 2004 at 15:59:24, Daniel Jackson wrote: >>>>>>> >>>>>>>>[D]rnbqkbnr/qqqqqqqq/8/8/8/8/QQQQQQQQ/RNBQKBNR w >>>>>>>> >>>>>>>>If someone has superfast hardware and a program that excels at mates please run >>>>>>>>this position, to find the shortest mate....whomever moves first will win. >>>>>>>> >>>>>>>>Daniel >>>>>>> >>>>>>>Shredder 7.04 after 100,000 seconds: >>>>>>> >>>>>>>Analysis from E:\explode.epd >>>>>>>9/18/2004 11:04:41 PM Level: 100000 Seconds >>>>>>>Analyzing engine: Shredder 7.04 UCI >>>>>>> >>>>>>>1) >>>>>>> Avoid move: >>>>>>> Best move (Shredder 7.04 UCI): Qa2xf7 >>>>>>> Not found in: 27:46:40 >>>>>>> illegal command >>>>>>> 2/4 03:08 84.254.222 448.272 +10.15 Qf2xf7+ Qg7xf7 Qh2xc7 Qb7xc7 Qd2xd7+ >>>>>>>Qc7xd7 Rh1xh7 Qa7xa2 Rh7xf7 Qa2xf7 Ra1xa8 >>>>>>> 3/32 03:10 85.070.720 448.146 +10.15 Qf2xf7+ Qg7xf7 Qh2xc7 Qb7xc7 Qd2xd7+ >>>>>>>Qc7xd7 Rh1xh7 Qa7xa2 Rh7xf7 Qa2xf7 Ra1xa8 >>>>>>> 4/35 10:52 284.248.110 436.109 +9.97 Qf2xf7+ Qg7xf7 Qh2xc7 Qb7xc7 Qd2xd7+ >>>>>>>Qd8xd7 Rh1xh7 >>>>>>> 5/36- 22:20 579.205.924 432.152 +9.72 Qf2xf7+ Qg7xf7 Qh2xc7 Qb7xg2 Qc7xd7+ >>>>>>>Nb8xd7 Qe2xe7+ Bf8xe7 Qd2xg2 Be7h4+ >>>>>>> 5/36 23:20 603.628.888 431.206 +9.30 Qf2xf7+ Qg7xf7 Qc2xc7 Qd8xc7 Qh2xc7 >>>>>>>Qd7xc7 Rh1xh7 Qf7xh7 Qg2xb7 Qc7xb7 Qb2xb7 Bc8xb7 >>>>>>> 5/38+ 26:29 679.501.672 427.552 +9.31 Qa2xf7+ Qg7xf7 Ra1xa7 Qc7xc2 Qd1xc2 >>>>>>>Qh7xc2 Qf2xf7+ Ke8xf7 Qh2f4+ Qe7f6 Qb2xc2 Qb7xg2 Bf1xg2 >>>>>>> 5/38+ 26:34 681.489.044 427.492 +9.66 Qa2xf7+ Qg7xf7 Ra1xa7 Qc7xc2 Qd1xc2 >>>>>>>Qh7xc2 Qf2xf7+ Ke8xf7 Qh2f4+ Qc2f5 >>>>>>> 5/38 28:10 720.051.153 425.924 +10.02 Qa2xf7+ Qg7xf7 Ra1xa7 Qc7xc2 Qd1xc2 >>>>>>>Qd7xd2+ Qc2xd2 Qb7xa7 >>>>>>> 6/37 42:00 1.049.164.383 416.293 +9.96 Qa2xf7+ Qg7xf7 Ra1xa7 Qc7xc2 Qd1xc2 >>>>>>>Qf7xf2+ Qg2xf2 Qh7xc2 Ra7xb7 >>>>>>> 7/37+ 1:06:31 1.624.364.439 407.005 +10.21 Qa2xf7+ Qg7xf7 Ra1xa7 Qc7xc2 >>>>>>>Qd1xc2 Qf7xf2+ Qg2xf2 Qb7xa7 Qf2xa7 Qh7xc2 >>>>>>> 7/42 1:47:23 2.566.186,666 398.290 +10.49 Qa2xf7+ Qg7xf7 Ra1xa7 Qc7xc2 >>>>>>>Qd1xc2 Qf7xf2+ Qg2xf2 Qh7xc2 Qd2xc2 Qe7xe2+ Bf1xe2 Qb7xa7 Qh2xh8 >>>>>>> 8/39+ 7:34:33 10.525.224,214 385.924 +10.74 Qa2xf7+ Qg7xf7 Ra1xa7 Qc7xc2 >>>>>>>Qd1xc2 Qf7xf2+ Qg2xf2 Qh7xc2 Qd2xc2 Qb7xb2 Bc1xb2 Ra8xa7 Qh2xh8 >>>>>>> 8/40 7:53:14 10.939.686,936 385.281 +11.03 Qa2xf7+ Qg7xf7 Ra1xa7 Qc7xc2 >>>>>>>Qd1xc2 Qd7xd2+ Nb1xd2 Qb7xa7 Qh2xh7 Rh8xh7 Rh1xh7 >>>>>>> 9/43 11:39:24 15.815.946,896 376.886 +10.89 Qa2xf7+ Qg7xf7 Ra1xa7 Qc7xh2 >>>>>>>Rh1xh2 Qb7xg2 Qf2xg2 Qh7xc2 Ra7xd7 >>>>>>> 10/49 25:05:43 34.460.750,880 381.441 +10.78 Qa2xf7+ Qg7xf7 Ra1xa7 Qc7xh2 >>>>>>>Rh1xh2 Qb7xg2 Rh2xg2 >>>>>>> 9/20/2004 2:51:51 AM, Time for this analysis: 03:46:44, Rated time: 27:46:40 >>>>>>> >>>>>>>0 of 1 matching moves >>>>>>>9/20/2004 2:51:52 AM, Total time: 3:47:10 AM >>>>>>>Rated time: 27:46:40 = 100000 Seconds >>>>>> >>>>>>Thanks for the effort! >>>>> >>>>>It's about the same complexity as this famous position: >>>>>[D]rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - >>>>>Any guess as to how many moves to the shortest forced mate? >>>>>;-) >>>> >>>>No I don't think so:o) But you can now try and find better moves for both >>>>sides:) >>>> >>>>[Event ""] >>>>[Site ""] >>>>[Date "2004.9.20"] >>>>[Round ""] >>>>[White "Chessmaster"] >>>>[Black "Chessmaster"] >>>>[TimeControl "-"] >>>>[Result "1-0"] >>>>[Setup "1"] >>>>[D]rnbqkbnr/qqqqqqqq/8/8/8/8/QQQQQQQQ/RNBQKBNR w KQkq - 0 1 >>>> >>>>1.Qaxf7+ Qxf7 2.Rxa7 Qcxc2 3.Q1xc2 Qxg2 4.Qhxg2 Rxa7 5.Rxh7 Rxh7 6.Qxb8 >>>>Rc7 7.Qxd7+ Rxd7 8.Ba3 Qxf2+ 9.Qxf2 Rf7 10.Bxe7 Bxe7 11.Qg6 Nf6 12.Qfxf6 >>>>Rd1+ 13.Qxd1 Qa5+ 14.Nc3 Qxc3+ 15.Qxc3 Bh4+ 16.Ke2 Bg3 17.Qcxc8+ Ke7 >>>>18.Qe8# 1-0 >>>> >>>>Daniel >>> >>>This done with analysis help from CM_SKR on an AMD 2500: >>> >>>[Event ""] >>>[Site ""] >>>[Date "2004.9.21"] >>>[Round ""] >>>[White "Human"] >>>[Black "Human"] >>>[TimeControl "-"] >>>[Result "1-0"] >>>[Setup "1"] >>>[FEN "rnbqkbnr/qqqqqqqq/8/8/8/8/QQQQQQQQ/RNBQKBNR w KQkq - 0 1"] >>> >>>1.Qaxf7+ Qxf7 2.Qxd7+ Qcxd7 3.Rxa7 Qxd1+ 4.Qxd1 Qxd1+ 5.Kxd1 Qxf2 >>>6.Qgxf2 Qxh2 7.Rxb7 Qxf2 8.Rxe7+ Nxe7 9.Rxh8 Qxe2+ 10.Bxe2 Ra5 11.Qxb8 >>>Rd5+ 12.Ke1 Kf7 13.Bc4 Bg7 14.Rxc8 Ke6 15.Qb6+ Kf5 16.Rc5 Bf6 17.Bd3+ >>>Kg4 18.Qxf6 Re5+ 19.Qxe5 Nf5 20.Qxf5+ Kg3 21.Qh3# 1-0 >> >>Thanks John....Check this line out if you have the time. It's a line where you >>mate in 20 moves. >> >> >>[Event ""] >>[Site ""] >>[Date "2004.9.21"] >>[Round ""] >>[White "Chessmaster"] >>[Black "Chessmaster"] >>[TimeControl "-"] >>[Result "*"] >>[Setup "1"] >>[D]rnbqkbnr/qqqqqqqq/8/8/8/8/QQQQQQQQ/RNBQKBNR w KQkq - 0 1"] >> >>1.Qaxf7+ Qxf7 2.Rxa7 Qxg2 3.Qhxg2 Rxa7 4.Qxh8 Qhf5 5.Qcxf5 Qdxf5 6.Qxd8+ >>Qxd8 7.Qxd8+ Kxd8 8.Qxf5 Qxf5 9.Qd4+ Ke8 10.Qxa7 Qxb1 11.Qxg8 Qxc1+ >>12.Kf2 Qf4+ 13.Nf3 Qxe2+ 14.Bxe2 Nd7 15.Qe6+ Kd8 16.Qa5+ Qc7 17.Qg5+ Nf6 >>18.Qgxf6+ Qe7 19.Rd1+ Bd7 20.Qxd7# * >> >>Daniel >> >>http://www.talkchess.com/forums/1/message.html?388552 >> >>We'll solve this mate yet!;-) > >I don't think that we'll solve this mate. I just offered another line more for >amusement than anything else. > >As for your line, all I can say is that CM9_SKR does not agree with a few early >moves that make all the difference: > >2...Qxf2+ or Qxd2+ instead of Qxg2 They may lead to faster mates...Black doesn't want to develope Whites Queens in the center. >3...Qxa7 instead of Rxa7 Again, it may lead to a faster mate. >4.Rxh7 instead of Qxh8 I think Qxh8 is stronger! >4...Qcxc2 instead of Qhf5 That is definitely is weaker, it developes in favour of White. I think the mate is likely less than 25 and more than 18. 20 and 21 are probably very close...but my brain can't see patterns as well with this overload of Queens and it slows down the fastest processors..sigh..and I don't have a fast processor by mondern standards either:( I was using the King 3.33 default and I disagree with some of it's analysis until many Queens are exchanged. > >jm
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