Author: Uri Blass
Date: 07:57:40 12/08/02
Go up one level in this thread
On December 08, 2002 at 10:46:12, Ulrich Tuerke wrote: >On December 08, 2002 at 10:17:12, Uri Blass wrote: > >>On December 08, 2002 at 10:11:58, Uri Blass wrote: >> >>>On December 08, 2002 at 09:50:14, Ulrich Tuerke wrote: >>> >>>>On December 08, 2002 at 09:36:28, Art Basham wrote: >>>> >>>>>Ruffian takes 9 ply to find.. >>>>>R(f1)xf5...! >>>> >>>>Comet needs 1o plies (but I guess that seconds are more interesting). >>>> >>>>Analysis by Comet B54: >>>> >>>>... >>>>1.g4 hxg5 2.Rxf8+ Qxf8 3.gxf5 exf5 4.Bxg5 >>>> +- (1.78) Depth: 6/26 00:00:00 204kN >>>>1.g4 hxg5 2.Rxf8+ Qxf8 3.gxf5 exf5 4.Bxg5 >>>> +- (1.78) Depth: 6/26 00:00:00 216kN >>>>1.Qg6 Rxf7 2.Nxf7 Qf8 3.Nxh6+ Nxh6 4.Rxf8+ Rxf8 >>>> +- (2.05) Depth: 6/26 00:00:00 254kN >>>>1.Qg6 Nxe3 2.Rxf8+ Qxf8 3.Rxf8+ Kxf8 4.Nxe6+ Ke7 >>>> +- (2.58) Depth: 6/26 00:00:00 274kN >>>>1.Qg6 Rxf7 2.Nxf7 Qe7 3.g4 >>>> +- (2.81) Depth: 6/29 00:00:00 347kN >>>>1.Qg6 Rxf7 2.Nxf7 Qe7 3.g4 >>>> +- (2.80) Depth: 7/29 00:00:01 505kN >>>>1.Qg6 Rxf7 2.Nxf7 Qe7 3.g4 >>>> +- (2.53) Depth: 7/29 00:00:01 793kN >>>>1.Qg6 Rxf7 2.Nxf7 Qe8 3.d5 >>>> +- (2.00) Depth: 7/29 00:00:02 1149kN >>>>1.Qg6 Rxf7 2.Nxf7 Qe8 3.Rxf5 exf5 4.Nxh6+ Kh8 5.Nf7+ Kg8 >>>> +- (1.52) Depth: 7/29 00:00:03 1550kN >>>>1.Qg6 Rxf7 2.Qxf7+ Kh8 3.Qxf5 hxg5 4.Qxg5 Kg8 >>>> +- (1.52) Depth: 8/29 00:00:04 2056kN >>>>1.Qg6 Rxf7 2.Qxf7+ Kh8 3.Qxf5 hxg5 4.Qg6 Kg8 >>>> +- (1.79) Depth: 8/29 00:00:04 2124kN >>>>1.Qg6 Rxf7 2.Qxf7+ Kh8 3.Qxf5 exf5 4.Nf7+ Kg8 5.Nxd8 Rxd8 6.d5 >>>> +- (1.83) Depth: 8/29 00:00:04 2246kN >>>>1.Qg6 Rxf7 2.Qxf7+ Kh8 >>>> +- (1.83) Depth: 9/29 00:00:06 3314kN >>>>1.Qg6 Rxf7 2.Qxf7+ Kh8 >>>> +- (1.83) Depth: 9/30 00:00:07 3671kN >>>>1.Qg6 Rxf7 2.Qxf7+ Kh8 3.Qxf5 exf5 4.Nf7+ Kg8 5.Nxd8 Kh8 >>>> +- (1.83) Depth: 10/37 00:00:12 6956kN >>>>1.Qg6 Rxf7 2.Qxf7+ Kh8 3.Qxf5 exf5 4.Nf7+ Kg8 5.Nxd8 Rxd8 6.d5 Bc8 7.d6 >>>> +- (2.10) Depth: 10/37 00:00:13 8042kN >>>>1.Qg6 Rxf7 2.Qxf7+ Kh8 3.Qxf5 exf5 4.Nf7+ Kg8 5.Nxd8 Rxd8 6.g3 >>>> +- (2.10) Depth: 10/37 00:00:15 8790kN >>>>1.R1xf5 exf5 2.Rxg7+ Kxg7 3.Ne6+ Bxe6 4.Bxh6+ Kh8 5.Bg5+ Kg8 6.Bxd8 Rf6 >>>> +- (2.63) Depth: 10/37 00:00:19 11004kN >>>>1.R1xf5 exf5 2.Rxg7+ Kxg7 3.Ne6+ Bxe6 4.Bxh6+ Kh8 5.Bg5+ Kg8 6.Bxd8 Rf6 >>>> +- (3.42) Depth: 10/37 00:00:22 12660kN >>>>1.R1xf5 exf5 2.Rxg7+ Kxg7 3.Ne6+ Kh8 4.Nxd8 Raxd8 5.Bxh6 Rg8 6.Bg5+ Kg7 >>>> +- (4.47) Depth: 10/37 00:00:24 13771kN >>>>1.R1xf5 exf5 2.Rxg7+ Kxg7 3.Ne6+ Bxe6 4.Bxh6+ Kh8 5.Bg5+ Kg7 6.Qh6+ Kg8 7.Qxe6+ >>>>Kg7 8.Bxd8 Raxd8 9.Qxc4 >>>> +- (4.73) Depth: 10/37 00:00:28 16435kN >>> >>>Ruffian like movei finds Qg6 at depth 13 but later changes it's mind again to >>>Rf1xf5 at the time of writing these lines ruffian has a fail high for Rxf5 at >>>depth 15. >>> >>>It seems that the position is a bad test position. >>> >>>Uri >> >>The right reason to find R1xf5 is not 2.Rxg7+ but 2.Qg6 >> >>Here is ruffian's analysis after finishing depth 15. >>depth=16 1/41(R1xf5) +6.27 R1xf5 exf5 Qg6 Rxf7 Qh7+ Kf8 d5 Ke8 Bc5 Ba4 e6 Qe7 >>exf7+ Qxf7 Nxf7 Kxf7 Qxf5+ Kg8 Qe6+ Kh8 d6 >> >>Ruffian has another fail high a depth 16 for R1xf5 >> >>depth=17 1/41(R1xf5) +6.94 R1xf5 exf5 Qg6 Rxf7 Qh7+ Kf8 d5 Ke8 Bc5 Ba4 e6 Qe7 >>Bxe7 Kxe7 Nxf7 Kf6 Kf2 f4 Kf3 >>Nodes: 357800584 NPS: 637984 >>Time: 00:09:20.83 >> > >can't help it, Comet sticks to Rf1xf5 > >1.R1xf5 exf5 2.Qg6 Rxf7 3.Qh7+ Kf8 4.d5 Ke8 5.Bc5 Qe7 6.Bxe7 Kxe7 7.Qh8 > +- (5.57) Depth: 12/39 00:02:21 105566kN > >>Uri Yace finds Rxf5 at depth 7 but changes it's mind at depth 9 and sticks to Qg6 (does not change it's mind in 7 minutes of search) New position r2q1rk1/pp1b1Rp1/4p2p/4PnNQ/2pP4/2P1B3/P5PP/5RK1 w - - 0 1 Analysis by Yace 0.99.56: 1.Rf7xf8+ Qd8xf8 ± (1.02) Depth: 1 00:00:00 1.Qh5-g6 Rf8xf7 2.Ng5xf7 ± (0.96) Depth: 3 00:00:00 1.Qh5-g6 Rf8xf7 2.Ng5xf7 ± (0.96) Depth: 3 00:00:00 1.Qh5-g6 Rf8xf7 2.Ng5xf7 ± (0.96) Depth: 3 00:00:00 1.Qh5-g6 Rf8xf7 2.Ng5xf7 ± (0.96) Depth: 3 00:00:00 1.Qh5-g6 Rf8xf7 2.Rf1xf5 ² (0.56) Depth: 4 00:00:00 1.Qh5-g6 Rf8xf7 2.Ng5xf7 Qd8-e8 3.Rf1xf5 e6xf5 4.Nf7xh6+ Kg8-h8 ² (0.46) Depth: 4 00:00:00 1.Rf7xf8+ Qd8xf8 2.g2-g4 Nf5xe3 3.Rf1xf8+ Kg8xf8 ² (0.47) Depth: 4 00:00:00 1.Rf7xf8+ Qd8xf8 2.g2-g4 Qf8-e8 3.Qh5xe8+ Ra8xe8 4.g4xf5 ² (0.68) Depth: 4 00:00:00 1.g2-g4 Qd8xg5 2.Be3xg5 h6xg5 ² (0.69) Depth: 4 00:00:00 1.g2-g4 h6xg5 2.Rf7xf8+ Qd8xf8 3.g4xf5 e6xf5 ± (0.74) Depth: 4 00:00:00 1.g2-g4 h6xg5 2.Rf7xf8+ Qd8xf8 3.g4xf5 e6xf5 ± (0.74) Depth: 5 00:00:00 42kN 1.g2-g4 h6xg5 2.Rf7xf8+ Qd8xf8 3.g4xf5 e6xf5 4.Qh5-f3 b7-b6 ² (0.63) Depth: 6 00:00:00 142kN 1.g2-g4 h6xg5 2.Rf7xf8+ Qd8xf8 3.g4xf5 e6xf5 4.Qh5-f3 f5-f4 5.Qf3xb7 ± (0.72) Depth: 7 00:00:00 397kN 1.Rf1xf5 e6xf5 2.Rf7xg7+ Kg8xg7 3.Ng5-e6+ Bd7xe6 4.Be3xh6+ Kg7-h7 5.Bh6-g5+ Kh7-g7 6.Qh5-h6+ Kg7-f7 7.Bg5xd8 Rf8-e8 ± (0.73) Depth: 7 00:00:01 477kN 1.Rf1xf5 e6xf5 2.Rf7xg7+ Kg8xg7 3.Ng5-e6+ Kg7-g8 4.Ne6xd8 Bd7-e8 5.Qh5xh6 Be8-h5 +- (2.03) Depth: 7 00:00:01 477kN 1.Rf1xf5 e6xf5 2.Rf7xg7+ Kg8xg7 3.Ng5-e6+ Bd7xe6 4.Be3xh6+ Kg7-h7 5.Bh6-g5+ Kh7-g7 6.Qh5-h6+ Kg7-f7 7.Bg5xd8 Rf8-e8 8.Bd8-f6 +- (3.20) Depth: 7 00:00:01 477kN 1.Rf1xf5 e6xf5 2.Rf7xg7+ Kg8xg7 3.Ng5-e6+ Bd7xe6 4.Be3xh6+ Kg7-h7 5.Bh6-g5+ Kh7-g7 6.Qh5-h6+ Kg7-f7 7.Bg5xd8 Rf8-e8 8.Qh6-h7+ Kf7-f8 9.Bd8-f6 +- (3.26) Depth: 8 00:00:02 910kN 1.Rf1xf5 e6xf5 2.Rf7xg7+ Kg8xg7 3.Ng5-e6+ Bd7xe6 4.Be3xh6+ Kg7-h7 5.Bh6-g5+ Kh7-g7 6.Qh5-h6+ Kg7-f7 7.Bg5xd8 Rf8-e8 8.Qh6-f6+ Kf7-g8 9.Qf6-g6+ Kg8-f8 10.Bd8-f6 +- (3.29) Depth: 9 00:00:05 2436kN 1.Qh5-g6 Rf8xf7 2.Qg6-h7+ Kg8-f8 3.d4-d5 Kf8-e8 4.Be3-c5 Rf7-f8 5.Rf1xf5 Bd7-c6 6.Rf5xf8+ Ke8-d7 +- (3.30) Depth: 9 00:00:08 3376kN 1.Qh5-g6 Rf8xf7 2.Qg6-h7+ Kg8-f8 3.d4-d5 Qd8-c8 4.Qh7-h8+ Kf8-e7 5.d5-d6+ Nf5xd6 6.e5xd6+ Ke7xd6 7.Ng5xf7+ Kd6-c6 8.Qh8xg7 h6-h5 9.Rf1-d1 +- (3.55) Depth: 9 00:00:08 3783kN 1.Qh5-g6 Rf8xf7 2.Qg6-h7+ Kg8-f8 3.d4-d5 Qd8-c8 4.Qh7-h8+ Kf8-e7 5.d5-d6+ Nf5xd6 6.e5xd6+ Ke7xd6 7.Ng5xf7+ Kd6-c6 8.Qh8xg7 h6-h5 9.Rf1-d1 Qc8-h8 10.Nf7xh8 Ra8xh8 +- (3.95) Depth: 10 00:00:13 5622kN 1.Qh5-g6 Qd8xg5 2.Rf7xf8+ Ra8xf8 3.Be3xg5 h6xg5 4.Qg6xg5 Bd7-c6 5.g2-g4 Nf5-h6 6.Rf1xf8+ Kg8xf8 7.Qg5-f4+ Kf8-e7 8.h2-h4 +- (4.57) Depth: 10 00:00:20 9103kN 1.Qh5-g6 Qd8xg5 2.Rf7xf8+ Ra8xf8 3.Be3xg5 h6xg5 4.Qg6xg5 Bd7-c6 5.g2-g4 Nf5-h6 6.Rf1xf8+ Kg8xf8 7.Qg5-g6 Bc6-d5 8.h2-h4 +- (4.62) Depth: 11 00:00:35 15831kN 1.Qh5-g6 Qd8xg5 2.Rf7xf8+ Ra8xf8 3.Be3xg5 h6xg5 4.Qg6xg5 Bd7-c6 5.g2-g4 Nf5-h6 6.h2-h4 Nh6-f7 7.Qg5-e7 Bc6-d5 8.Kg1-h2 +- (4.56) Depth: 12 00:01:21 37802kN 1.Qh5-g6 Qd8xg5 2.Rf7xf8+ Ra8xf8 3.Be3xg5 h6xg5 4.Qg6xg5 Bd7-c6 5.g2-g4 Nf5-h6 6.h2-h4 Nh6-f7 7.Qg5-e7 Bc6-d5 8.Kg1-h2 a7-a5 +- (4.60) Depth: 13 00:03:50 101731kN (Blass, Tel-aviv 08.12.2002)
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