Author: Uri Blass
Date: 07:50:39 07/08/03
Go up one level in this thread
On July 08, 2003 at 10:40:28, Uri Blass wrote: >On July 08, 2003 at 10:28:55, Djordje Vidanovic wrote: > >>On July 07, 2003 at 16:47:09, Uri Blass wrote: >> >>>On July 07, 2003 at 16:44:28, Djordje Vidanovic wrote: >>> >>>>Here's the clip from the newest Ruffian engine: >>>> >>>>New game >>>>4rqn1/p3brk1/R5p1/6Bp/1p5Q/1B1R4/PPP2PPP/6K1 w - - 0 1 >>>> >>>>Analysis by Ruffian 2003-06-23: >>>> >>>>1.Rxg6+ Kxg6 2.Rh3 Bxg5 3.Qxh5+ Kf5 4.Rf3+ Ke5 5.Rxf7 Qh6 6.Qe2+ Be3 7.fxe3 >>>> +- (7.53) Depth: 1/7 00:00:00 >>>>1.Rxg6+ Kxg6 2.Rh3 Bxg5 3.Qxh5+ Kf5 4.Rf3+ Ke5 5.Rxf7 Qh6 6.Qe2+ Be3 7.fxe3 >>>> +- (7.53) Depth: 1/7 00:00:00 >>>>1.Rxg6+ Kxg6 2.Rh3 Bxg5 3.Qxh5+ Kf5 4.Rf3+ Ke5 5.Rxf7 Qh6 6.Qe2+ Be3 7.fxe3 >>>> +- (7.53) Depth: 2/7 00:00:00 >>>>1.Rxg6+ Kxg6 2.Rh3 Bxg5 3.Qxh5+ Kf5 4.Rf3+ Ke5 5.Rxf7 Qh6 6.Qe2+ Be3 7.fxe3 >>>> +- (7.53) Depth: 3/10 00:00:00 >>>>1.Rxg6+ Kxg6 2.Rh3 Bxg5 3.Qxh5+ Kf5 4.Rf3+ Ke5 5.Rxf7 Qh6 6.Qe2+ Be3 7.fxe3 >>>> +- (7.53) Depth: 4/10 00:00:00 >>>>1.Rxg6+ Kxg6 2.Rh3 Bxg5 3.Qxh5+ Kf5 4.Rf3+ Ke5 5.Rxf7 Qh6 6.Qe2+ Be3 7.fxe3 >>>> +- (7.53) Depth: 5/11 00:00:00 >>>>1.Rxg6+ Kxg6 2.Rh3 Bxg5 3.Qxh5+ Kf5 4.Rf3+ Ke5 5.Rxf7 Qh6 6.Qe2+ Be3 7.fxe3 >>>> +- (7.53) Depth: 6/13 00:00:00 16kN >>>>1.Rxg6+ Kxg6 2.Rh3 Bxg5 3.Qxh5+ Kf5 4.Rf3+ Ke5 5.Rxf7 Qh6 6.Qe2+ Be3 7.fxe3 >>>> +- (7.53) Depth: 7/17 00:00:00 86kN >>>>1.Rxg6+ Kxg6 2.Rh3 Bxg5 3.Qxh5+ Kf5 4.Rf3+ Ke5 5.Rxf7 Qh6 6.Qe2+ Be3 7.fxe3 >>>> +- (7.53) Depth: 8/20 00:00:00 202kN >>>>1.Rxg6+ Kxg6 2.Rh3 Bxg5 3.Qxh5+ Kf5 4.Rf3+ Ke5 5.Rxf7 Qh6 6.Qe2+ Be3 7.fxe3 >>>> +- (7.53) Depth: 9/20 00:00:00 448kN >>> >>>I suspect that it learned from previous analysis. >>>The line and the score was not changed from depth 1. >>> >>>Uri >> >> >>Which previous analysis? I just copied the fen into Ruffian and let him >>analyse. No previous analysis. Wrong suspicion :) Ruffian is a very smart >>program... >> >>Djordje > >It does not make sense that a program has a pv of 13 plies at depth 1 when the >pv and the score are unchanged until depth 9 except number of nodes. > >Maybe Ruffian analyzed the position without telling you about it after you >copied the FEN and before you started the analysis. > >Uri Or Maybe Ruffian already analyzed the position in the past and when you copied the FEN it is not the first time that it saw it. Ruffian is a good program but I do not believe that it can see at depth 1 something that top program including ruffian1.0.1 needs depth 8 You should know when a result does not make sense Here is analysis of Ruffian1.0.1 that needs depth 8 to converge to Rxh6+ New ruffian may be better than Ruffian1.0.1 but not 7 plies better. New game 4rqn1/p3brk1/R5p1/6Bp/1p5Q/1B1R4/PPP2PPP/6K1 w - - 0 1 Analysis by Ruffian 1.0.1: 1.Bxf7 Qxf7 2.Rxa7 Bxg5 3.Rxf7+ Kxf7 +- (5.88) Depth: 1/7 00:00:00 1.Bxf7 Qxf7 2.Rxa7 Bxg5 3.Rxf7+ Kxf7 +- (6.62) Depth: 2/8 00:00:00 1.Bxf7 Qxf7 2.Rxa7 Kh8 +- (6.15) Depth: 3/10 00:00:00 1.Bxf7 Qxf7 2.Rxa7 Nf6 3.Bxf6+ Qxf6 4.Qxb4 +- (6.90) Depth: 4/12 00:00:00 1.Bxf7 Bxg5 2.Rxg6+ Kxf7 3.Rf3+ Kxg6 4.Rxf8 Bxh4 5.Rxe8 ± (1.04) Depth: 5/14 00:00:00 1.Qd4+ Bf6 2.Bxf6+ Nxf6 3.f3 Re1+ 4.Kf2 Rfe7 5.Rxa7 R1e2+ 6.Kf1 +- (3.13) Depth: 5/16 00:00:00 1.f3 Bc5+ 2.Kf1 Rb7 3.Bd5 Rd7 +- (3.98) Depth: 5/16 00:00:00 1.f3 Bxg5 2.Qxg5 Rf6 3.Rxa7+ Kh8 4.Bxg8 Kxg8 5.Rdd7 +- (4.17) Depth: 6/16 00:00:00 293kN 1.Re3 Rd8 2.Re1 Bxg5 3.Qxg5 Rf6 4.Rxa7+ Kh8 +- (4.20) Depth: 6/19 00:00:01 480kN 1.Rxg6+ +- (4.33) Depth: 6/19 00:00:01 623kN 1.Rxg6+ Kxg6 2.Rg3 Bxg5 3.Rxg5+ Kh7 4.Rxh5+ Nh6 5.Bxf7 Qxf7 6.Rxh6+ +- (5.94) Depth: 6/19 00:00:01 657kN 1.Rxg6+ +- (5.59) Depth: 7/21 00:00:01 827kN 1.Rxg6+ Kxg6 2.Rg3 Bxg5 3.Rxg5+ Kh7 4.Rxh5+ Nh6 5.Rxh6+ Qxh6 6.Qxh6+ Kxh6 7.Bxf7 +- (2.21) Depth: 7/21 00:00:02 1026kN 1.f3 Rf5 2.Rxa7 Kh8 3.Bxe7 Rxe7 4.Qd4+ Kh7 5.Rxe7+ Qxe7 6.Bd5 +- (4.01) Depth: 7/21 00:00:02 1237kN 1.Re3 Rd8 2.Re1 Bxg5 3.Qxg5 Rf6 4.Rxa7+ Kh8 5.Qe5 +- (4.21) Depth: 7/21 00:00:04 1829kN 1.Re3 Bxg5 2.Qxg5 Rf6 3.Rxa7+ Kh8 4.Rxe8 Qxe8 5.Kf1 Rd6 +- (4.00) Depth: 8/21 00:00:05 2769kN 1.Rxg6+ +- (4.56) Depth: 8/23 00:00:06 3339kN 1.Rxg6+ Kxg6 2.Rh3 Bxg5 3.Qxh5+ Kf5 4.Rf3+ Ke5 5.Bxf7 Qh6 6.Re3+ Kd4 7.Rxe8 Qxh5 8.Bxh5 +- (6.33) Depth: 8/23 00:00:07 3609kN 1.Rxg6+ +- (6.68) Depth: 9/24 00:00:09 4747kN 1.Rxg6+ Kxg6 2.Rh3 Bxg5 3.Qxh5+ Kf5 4.Rf3+ Ke5 5.Rxf7 Qh6 6.Qe2+ Be3 7.fxe3 +- (7.19) Depth: 9/24 00:00:10 5544kN (, eim 08.07.2003) Uri
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