Author: Enrique Irazoqui
Date: 04:25:11 02/17/01
Go up one level in this thread
On February 17, 2001 at 00:52:04, Jeremiah Penery wrote: >On February 16, 2001 at 10:43:45, Enrique Irazoqui wrote: > >>>>>[D]8/1k4p1/3pP3/pP5P/8/8/1r5P/3K4 w >>>>> >>>>>It's a Troitzky study. > >>Very clear description, Gustavo. Now for the chess part, since in my opinion >>it's an interesting problem. That's the winning line: >> >>Troitzky,A >> >>1.h6! gxh6 2.e7 Rb1+ 3.Kd2 Rb2+ 4.Kd3 Rb3+ 5.Kd4 Rb4+ 6.Kd5 Rxb5+ 7.Kxd6 Rb6+ >>8.Kd5 [8.Kd7? Rb1] 8...Rb5+ 9.Kd4 Rb4+ 10.Kd3 Rb3+ 11.Ke2 Rb2+ 12.Kf3 Rb3+ >>13.Kf4 Rb4+ 14.Kf5 Rb5+ 15.Kf6 Rb6+ 16.Kf7 1-0 >> >>It takes a very deep search to find 1.h6. > >Modified Crafty 18.1 (with SE), PII-300: > >21-> 34:34 0.00 1. e7 Rb1+ 2. Kd2 Rb2+ 3. Kd3 Rb3+ > 4. Kd4 Rb4+ 5. Kd5 Rxb5+ 6. Kxd6 Rb6+ > 7. Kd5 Rb5+ 8. Kd6 <HT> >22 61:22 0.00 1. e7 Rb1+ 2. Kd2 Rb2+ 3. Kd3 Rb3+ > 4. Kd4 Rb4+ 5. Kd5 Rxb5+ 6. Kxd6 Rb6+ > 7. Kd5 Rb5+ 8. Kd6 <HT> >22 91:50 ++ 1. h6!! >22 824:45 1/7? 1. h6 > >The search seems to have exploded here. I'll let it go until the fail-high is >resolved, just to see what happens. > >Jeremiah About a year ago I tried this position with all the programs I had and none played 1.h6 in less than 15 minutes. Deep Fritz does a better job: Troitzky,A 8/1k4p1/3pP3/pP5P/8/8/1r5P/3K4 w - - 0 1 Analysis by DEEP FRITZ : 1.e7 Rb1+ 2.Kd2 -+ (-3.12) Depth: 2/8 00:00:00 1.e7 Rb1+ 2.Kd2 Rb2+ = (0.00) Depth: 4/14 00:00:00 1kN 1.e7 Rb1+ 2.Kd2 Rb2+ = (0.00) Depth: 4/14 00:00:00 1kN 1.e7 Rb1+ 2.Kd2 Rb2+ = (0.00) Depth: 4/14 00:00:00 1kN 1.e7 Rb1+ 2.Kd2 Rb2+ = (0.00) Depth: 4/14 00:00:00 1kN 1.e7 Rb1+ 2.Kd2 Rb2+ = (0.00) Depth: 4/14 00:00:00 1kN 1.e7 Rb1+ 2.Kd2 Rb2+ 3.Kd1 Rb1+ 4.Kd2 Rb2+ 5.Kd1 Rb1+ 6.Kd2 Rb2+ = (0.00) Depth: 5/12 00:00:00 2kN 1.e7 Rb1+ 2.Kd2 Rb2+ 3.Kd1 Rb1+ 4.Kd2 Rb2+ 5.Kd1 Rb1+ 6.Kd2 Rb2+ = (0.00) Depth: 5/12 00:00:00 2kN 1.e7 Rb1+ 2.Kd2 Rb2+ 3.Kd1 Rb1+ 4.Kd2 Rb2+ 5.Kd1 Rb1+ 6.Kd2 Rb2+ = (0.00) Depth: 5/12 00:00:00 2kN 1.e7 Rb1+ 2.Kd2 Rb2+ 3.Kd1 Rb1+ 4.Kd2 Rb2+ 5.Kd1 Rb1+ 6.Kd2 Rb2+ = (0.00) Depth: 5/12 00:00:00 2kN 1.e7 Rb1+ 2.Kd2 Rb2+ 3.Kd1 Rb1+ 4.Kd2 Rb2+ 5.Kd1 Rb1+ 6.Kd2 Rb2+ = (0.00) Depth: 6/14 00:00:00 5kN 1.e7 Rb1+ 2.Kd2 Rb2+ 3.Kd1 Rb1+ 4.Kd2 Rb2+ 5.Kd1 Rb1+ 6.Kd2 Rb2+ = (0.00) Depth: 7/15 00:00:00 13kN 1.e7! = (0.16) Depth: 8/18 00:00:00 33kN 1.e7! Rb1+ 2.Kd2 Rb2+ 3.Kd3 Rb3+ 4.Kd4 Rb4+ 5.Kd5 Rxb5+ 6.Kxd6 Rxh5 +- (1.81) Depth: 8/18 00:00:00 49kN 1.e7 Rb1+ 2.Kd2 Rb2+ 3.Kd3 Rb3+ 4.Kd4 Rb4+ 5.Kd5 Rxb5+ 6.Kxd6 Rxh5 +- (1.94) Depth: 9/20 00:00:00 96kN 1.e7-- +- (1.63) Depth: 10/22 00:00:00 102kN 1.e7-- Rb1+ 2.Kd2 Rb2+ 3.Kd3 Rb3+ 4.Kd4 Rb4+ 5.Kd5 Rxb5+ 6.Kxd6 Rb6+ = (0.00) Depth: 10/24 00:00:00 164kN 1.e7 Rb1+ 2.Kd2 Rb2+ 3.Kd3 Rb3+ 4.Kd4 Rb4+ 5.Kd5 Rxb5+ 6.Kxd6 Rb6+ = (0.00) Depth: 11/23 00:00:00 356kN 1.e7 Rb1+ 2.Kd2 Rb2+ 3.Kd3 Rb3+ 4.Kd4 Rb4+ 5.Kd5 Rxb5+ 6.Kxd6 Rb6+ = (0.00) Depth: 12/25 00:00:00 862kN 1.e7 Rb1+ 2.Kd2 Rb2+ 3.Kd3 Rb3+ 4.Kd4 Rb4+ 5.Kd5 Rxb5+ 6.Kxd6 Rb6+ = (0.00) Depth: 13/28 00:00:01 1565kN 1.e7 Rb1+ 2.Kd2 Rb2+ 3.Kd3 Rb3+ 4.Kd4 Rb4+ 5.Kd5 Rxb5+ 6.Kxd6 Rb6+ = (0.00) Depth: 14/29 00:00:02 2966kN 1.e7 Rb1+ 2.Kd2 Rb2+ 3.Kd3 Rb3+ 4.Kd4 Rb4+ 5.Kd5 Rxb5+ 6.Kxd6 Rb6+ = (0.00) Depth: 15/31 00:00:05 5956kN 1.e7 Rb1+ 2.Kd2 Rb2+ 3.Kd3 Rb3+ 4.Kd4 Rb4+ 5.Kd5 Rxb5+ 6.Kxd6 Rb6+ = (0.00) Depth: 16/33 00:00:09 11582kN, tb=18 1.e7 Rb1+ 2.Kd2 Rb2+ 3.Kd3 Rb3+ 4.Kd4 Rb4+ 5.Kd5 Rxb5+ 6.Kxd6 Rb6+ = (0.00) Depth: 17/34 00:00:19 23752kN, tb=102 1.e7 Rb1+ 2.Kd2 Rb2+ 3.Kd3 Rb3+ 4.Kd4 Rb4+ 5.Kd5 Rxb5+ 6.Kxd6 Rb6+ = (0.00) Depth: 18/37 00:00:39 47306kN, tb=375 1.e7 Rb1+ 2.Kd2 Rb2+ 3.Kd3 Rb3+ 4.Kd4 Rb4+ 5.Kd5 Rxb5+ 6.Kxd6 Rb6+ = (0.00) Depth: 19/40 00:01:19 95579kN, tb=1309 1.e7 Rb1+ 2.Kd2 Rb2+ 3.Kd3 Rb3+ 4.Kd4 Rb4+ 5.Kd5 Rxb5+ 6.Kxd6 Rb6+ = (0.00) Depth: 20/41 00:02:59 219250kN, tb=3834 1.h6! = (-0.12) Depth: 20/41 00:06:52 511012kN, tb=7379 1.h6! = (0.19) Depth: 21/42 00:28:13 2299775kN, tb=41771 1.h6! Rb1+ 2.Kc2 Rxb5 3.hxg7 Rc5+ 4.Kb2 Rc8 5.h4 d5 6.h5 d4 ² (0.50) Depth: 21/44 00:35:32 2868523kN, tb=48943 (Irazoqui, Cadaqués 17.02.2001)
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