Author: bobby palacios
Date: 20:08:08 03/14/03
Go up one level in this thread
On March 14, 2003 at 22:15:27, Dann Corbit wrote: >On March 14, 2003 at 21:33:25, ALI MIRAFZALI wrote: > >>The following astonishing position is taken from the game Atalik vs Gufeld >>Losangeles 2000: >>[D]r1b2rk1/1pNnq1b1/1B1p2n1/P2Pp2p/4Pp2/5Pp1/1P2B1PP/R2QNRK1 w >>Here Atalik played 21.h3 .In fact incorrect would be 21.Nxa8? However the >>analysis of why is very difficult and Complicated.Here are two sample lines >>given by Gufeld A)21.Nxa8 Nxb6 22.Nxb6 Qh4 23.h3 Bxh3 24.gxh3 Qxh3 25.Rf2 gxf2 >>26.Kxf2 Qh2+ 27.Ng2 Nh4 28.Qh1 Qg3+ 29.Kf1 Nxf3 30.Bxf3 Qxf3+ 31.Kg1 Qxe4 >>32.Qh4 Qd4+ 33.Qf2 e4 34.Ra4 Qd1+ 35.Qe1 Qxe1+ 36.Nxe1 f3 37.Nc2 Rf4 >>B) same as A) until 28: 28.Qf1 Rf6 29.Nc8 Bf8 30.Qh1 Qg3+ 31.Kf1 Nxf3 32.Rd1 Rg6 >>All with advantage to Black. >>please indicate your result. > >Score has dropped pretty low, but crafty has not found it by ply 17: > > 17 11:59 0.88 1. Nxa8 Nxb6 2. Nxb6 Qh4 3. h3 Bxh3 > 4. gxh3 Qxh3 5. Rf2 gxf2+ 6. Kxf2 Qg3+ > 7. Kf1 h4 8. Bc4 h3 9. Ke2 Qh2+ 10. > Kd3 Qxb2 11. Ra2 Qd4+ 12. Ke2 Qc3 > time=16:39 cpu=99% mat=1 n=549752604 fh=89% nps=550k > ext-> chk=13023928 cap=2142702 pp=1781739 1rep=1954652 mate=372481 > > predicted=0 nodes=549752604 evals=176775996 > endgame tablebase-> probes done=0 successful=0 >hite(1): p4 2.47ghz, 256mb hash Shredder 7 - 1:14 Analysis by Shredder 7: 1.Nxa8 Nxb6 2.axb6 Qh4 3.h3 Bxh3 4.gxh3 Qxh3 5.Nd3 +- (4.39) Depth: 10/17 00:00:00 182kN 1.Nxa8 Nxb6 2.axb6 Qh4 3.h3 Bxh3 4.gxh3 Qxh3 5.Ng2 Qh2# +- (3.89) Depth: 10/17 00:00:01 205kN 1.Nxa8 Nxb6 2.Nxb6 Qh4 3.h3 Bxh3 4.gxh3 Qxh3 5.Rf2 gxf2+ 6.Kxf2 Qg3+ 7.Kf1 h4 ± (0.94) Depth: 10/23 00:00:01 304kN 1.Bd4 exd4 2.Nxa8 gxh2+ 3.Kxh2 Qh4+ 4.Kg1 Qh2+ 5.Kxh2 Nh4 ± (0.95) Depth: 10/25 00:00:05 1806kN 1.Bd4 exd4 2.Nxa8 gxh2+ 3.Kxh2 Qh4+ 4.Kg1 Qh2+ 5.Kxh2 Nh4 ± (1.30) Depth: 10/25 00:00:05 2024kN 1.Bd4 exd4 2.Nxa8 Qh4 3.h3 Nde5 4.Qb3 Bxh3 5.gxh3 Qxh3 6.Qxb7 Qh2# ± (1.30) Depth: 10/25 00:00:06 2388kN 1.Bd4 exd4 2.Nxa8 Qh4 3.h3 Nde5 4.Qb3 Bxh3 5.gxh3 Qxh3 6.Nd3 Rxa8 7.Ra3 Nxd3 ± (1.05) Depth: 11/27 00:00:07 2695kN 1.Bd4 exd4 2.Nxa8 Qh4 3.h3 Nde5 4.Qb3 Bxh3 5.gxh3 Qxh3 6.Nd3 Rxa8 7.Nxe5 dxe5 8.Qxb7 ² (0.55) Depth: 11/28 00:00:08 2987kN 1.Bd4 exd4 2.Nxa8 Qh4 3.h3 Nde5 4.Bb5 Bxh3 5.gxh3 Qxh3 6.Qd2 Rxa8 7.Nc2 d3 8.Nd4 µ (-0.87) Depth: 11/36 00:00:12 4458kN 1.Nxa8 Nxb6 2.Nxb6 Qh4 3.h3 Bxh3 4.gxh3 Qxh3 5.Rf2 gxf2+ 6.Kxf2 Qg3+ 7.Kf1 Kh8 µ (-0.86) Depth: 11/36 00:00:13 4857kN 1.Nxa8 Nxb6 2.Nxb6 Qh4 3.h3 Bxh3 4.gxh3 Qxh3 5.Rf2 gxf2+ 6.Kxf2 Qg3+ 7.Kf1 Kh8 8.Nd3 Nh4 9.b4 Qxf3+ ³ (-0.51) Depth: 11/36 00:00:13 4880kN 1.Nxa8 Nxb6 2.Nxb6 Qh4 3.h3 Bxh3 4.gxh3 Qxh3 5.Rf2 gxf2+ 6.Kxf2 h4 7.Nd3 Qg3+ 8.Kf1 h3 9.Nf2 Qg2+ ² (0.53) Depth: 11/36 00:00:14 5038kN 1.Nxa8 Nxb6 2.Nxb6 Qh4 3.h3 Bxh3 4.gxh3 Qxh3 5.Rf2 gxf2+ 6.Kxf2 Qg3+ 7.Kf1 h4 8.Bc4 h3 9.Ke2 ² (0.36) Depth: 12/30 00:00:17 6334kN 1.Nxa8 Nxb6 2.Nxb6 Qh4 3.h3 Bxh3 4.gxh3 Qxh3 5.Rf2 gxf2+ 6.Kxf2 Qg3+ 7.Kf1 h4 8.Nd3 h3 9.Nf2 Qg2+ 10.Ke1 h2 11.Nc4 h1R+ 12.Nxh1 Qxh1+ 13.Bf1 = (0.22) Depth: 13/35 00:00:27 9781kN 1.Nxa8 Nxb6 2.Nxb6 Qh4 3.h3 Bxh3 4.gxh3 Qxh3 5.Rf2 gxf2+ 6.Kxf2 Qg3+ 7.Kf1 h4 8.Bc4 h3 9.Ke2 Nh4 10.Kd3 Qg1 11.Kc3 Kh8 12.b4 Qe3+ = (0.15) Depth: 14/40 00:00:49 18093kN 1.h3 Nxb6 2.axb6 Rb8 3.Kh1 Nh4 4.Ra7 Bd7 5.Bb5 Rf7 6.Bxd7 Qxd7 = (0.16) Depth: 14/40 00:01:14 27683kN 1.h3 Nxb6 2.axb6 Rb8 3.Ra7 Rf7 ² (0.51) Depth: 14/40 00:02:02 44721kN Junior 7 even faster (avoids Nxa8 in 1 second and plays h3 in 33 seconds): Analysis by Junior 7: 1.Nxa8 Nxb6 2.Nxb6 Qh4 3.h3 Bxh3 4.gxh3 Qxh3 5.Rf2 gxf2+ 6.Kxf2 h4 7.Qc2 Qg3+ 8.Kf1 ² (0.60) Depth: 12 00:00:00 445kN 1.Bd4 gxh2+ 2.Kxh2 Qh4+ 3.Kg1 exd4 4.Nxa8 d3 5.Nxd3 Bd4+ 6.Nf2 Bxb2 7.Ra4 Nge5 ± (0.99) Depth: 12 00:00:01 712kN 1.Ne6 Nxb6 2.Nxf8 Nxf8 3.axb6 Qh4 4.h3 Rxa1 5.Qxa1 Qd8 6.Qa8 Qxb6+ ± (1.02) Depth: 12 00:00:01 1069kN 1.Ne6 Nxb6 2.axb6 Bxe6 3.dxe6 Rxa1 4.Qxa1 Qxe6 5.Qa7 Qf7 6.Qa3 d5 7.Qb3 ³ (-0.32) Depth: 15 00:00:08 8793kN 1.hxg3 Nxb6 2.Nxa8 fxg3 3.f4 Nxa8 4.f5 Nf4 5.Ra3 h4 6.Rc3 Bd7 7.Nf3 Nxe2+ ³ (-0.26) Depth: 15 00:00:28 29270kN 1.h3 Nxb6 2.axb6 Rxa1 3.Qxa1 Nh4 4.Nd3 Bd7 5.Qa7 Bc8 6.Qa8 ² (0.43) Depth: 15 00:00:29 29879kN 1.h3 Nxb6 2.axb6 Rxa1 3.Qxa1 Nh4 4.Bb5 Qd8 5.Nd3 Kh7 6.Qa8 ² (0.47) Depth: 17 00:00:33 33574kN 1.h3 Nxb6 2.axb6 Rxa1 3.Qxa1 Bd7 4.Nd3 Bc8 5.Rc1 ² (0.61) Depth: 19 00:01:08 65059kN
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