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Subject: Re: Thomas Lagershausen's semi-sacrifice position...

Author: Thomas Lagershausen

Date: 14:16:43 01/12/01

Go up one level in this thread


On January 12, 2001 at 16:39:34, John Merlino wrote:

>On January 12, 2001 at 16:11:58, Dann Corbit wrote:
>
>>From:
>>http://www.icdchess.com/forums/1/message.shtml?149281
>>
>>It's awfully quite around here as far as remarks to this:
>>[D]r1r1q3/1b2bpkn/p2p1np1/1p1Pp2p/PPp1P3/R1P1BN1P/R1B2PP1/QN4K1 b - - bm Nxe4;
>>
>>Can anyone's program solve it?
>
>Chessmaster 8000 sees it, then backs off of it, then goes for it again:
>
>Time	Depth	Score	Positions	Moves
>0:00	5	0.64	9753		bxa4 Bxa4 Qd8 Nbd2 Qc7 Bc2
>0:00	6	0.79	20942		Nd7 axb5 axb5 Ra7 Rxa7 Rxa7 Rb8
>0:00	6	0.70	37983		Nxe4 Bxe4 Nf6 Nbd2 Nxe4 Nxe4 Bxd5
>					Qb1 f5
>0:01	7	0.72	85987		Nxe4 axb5 Bxd5 bxa6 Qc6 Ra5 f5 b5
>0:03	8	0.69	194101		Nxe4 axb5 Bxd5 bxa6 Neg5 Nbd2 Qc6
>					Qd1 f5
>0:08	9	0.77	479580		Nxe4 axb5 Bxd5 bxa6 Neg5 Nbd2 Nxf3+
>					Nxf3 Bxf3 gxf3 Qc6 Be4 d5
>0:13	9	0.73	773638		bxa4 Bxa4 Qd8 Bc6 Bxc6 dxc6 Nxe4
>					Rxa6 Rxa6 Rxa6 Qc7 Nbd2
>0:28	10	0.78	1719491		bxa4 Bxa4 Qd8 Bc6 Bxc6 dxc6 Nxe4
>					Rxa6 Rxa6 Rxa6 Nhg5 Nbd2 Nxf3+
>					Nxf3
>0:38	10	0.63	2373847		Nxe4 Bxe4 Nf6 Nbd2 Nxe4 Nxe4 Bxd5
>					Ned2 Bb7 axb5 Qxb5 Bg5
>1:31	11	0.84	6504630		Nxe4 Bxe4 Nf6 Bc2 Nxd5 Be4 f5 Bxd5
>					Bxd5 axb5 axb5 Ra7 Rxa7 Rxa7
>4:55	12	0.94	23027258	Nxe4 Bxe4 Nf6 Nbd2 Nxe4 Nxe4 Bxd5
>					Ned2 bxa4 Rxa4 Bb7 Ra5 Qd8 b5 axb5
>					Rxb5
>
>jm

Yes! The new king engine understands this position better than every other
programe of the wourld.The "old" CM 6000 is not able to find the solution in 1
hour (K6-2+ 600).The third programe i know which is able to understand this
position is the new beta from Frank Zibi.ZChess 2.22 needs ply 13 and
2Min.49sec.
  8.01	 0:01 	+0.11-- 	1.e3 Sf6 2.Sc3 e6 3.Sf3 Sc6 4.Le2 Lb4 (17.182) 16.4
  8.01	 0:01 	+0.10 	1.e3 Sf6 2.Sc3 e6 3.Sf3 Sc6 4.Lc4 d5 (25.353) 19.5
  8.13	 0:01 	+0.28++ 	1.d4 Sf6 (27.061) 20.0
  8.13	 0:01 	+0.28 	1.d4 Sf6 (27.110) 20.0
  9.01	 0:01 	+0.28 	1.d4 Sf6 (28.493) 20.9
 10.01	 0:01 	+0.28 	1.d4 Sf6 (48.814) 26.4
 11.01	 0:03 	+0.28 	1.d4 Sf6 (114.903) 29.5
Bester Zug: d2-d4 Zeit: 0:38.806 min  K/s: 37.743  Knoten: 1.464.474
 11.01	 0:00 	+0.28 	1.d4 Sf6 2.e3 e6 3.Sf3 Le7 4.Sc3 d6 5.Ld3 O-O 6.O-O Sc6
(4.847) 42.1
Bester Zug: d2-d4 Zeit: 0:10.053 min  K/s: 58.080  Knoten: 581.150
 11.01	 0:00 	+0.28 	1.d4 Sf6 2.e3 e6 3.Sf3 Le7 4.Sc3 d6 5.Ld3 O-O 6.O-O Sc6
(9.191) 97.7
 12.01	 0:04 	+0.16 	1.d4 Sf6 2.e3 e6 3.Sf3 Le7 4.Sc3 d6 5.Ld3 O-O 6.O-O Sc6
(528.949) 119.4
Bester Zug: d2-d4 Zeit: 0:08.312 min  K/s: 120.934  Knoten: 999.285
Engine: ZChess 2.2 beta
von Franck Zibi
Bester Zug: d2-d4 Zeit: 0:02.586 min
Bester Zug: e2-e4 Zeit: 0:01.531 min
Bester Zug: e2-e4 Zeit: 0:01.720 min
  5.00	 0:00 	-0.44 	29...Sf8 30.Db2 S8d7 31.Sbd2 Td8 (10.258)
  5.00	 0:00 	-0.44 	29...Sf8 30.Db2 S8d7 31.Sbd2 Td8 (16.357)
  6.00	 0:00 	-0.55 	29...Sf8 30.axb5 axb5 31.Txa8 Txa8 32.Txa8 Dxa8 33.Dxa8
Lxa8 34.Sbd2 (24.186)
  6.00	 0:00 	 0.00 	29...Tcb8 (31.644)
  6.00	 0:00 	-0.53 	29...Tcb8 30.axb5 axb5 31.Sbd2 Txa3 32.Txa3 Sf8 33.Ta7
(37.468)
  6.00	 0:01 	-0.53 	29...Tcb8 30.axb5 axb5 31.Sbd2 Txa3 32.Txa3 Sf8 33.Ta7
(62.329) 62.3
  7.01	 0:01 	-0.68 	29...Tcb8 30.axb5 axb5 31.Txa8 Lxa8 32.Ta7 Lb7 33.Da5 Sf8
(80.570) 80.5
  7.11	 0:01 	 0.00 	29...Tab8 (139.538) 139.5
  7.23	 0:02 	-0.68 	29...Tcb8 30.axb5 axb5 31.Txa8 Lxa8 32.Ta7 Lb7 33.Da5 Sf8
(201.533) 100.7
  8.01	 0:02 	-0.66 	29...Tcb8 30.axb5 axb5 31.Txa8 Lxa8 32.Ta7 Lb7 33.Db2 Sf8
34.Sbd2 (232.217) 116.1
  8.14	 0:03 	-0.66 	29...Tcb8 30.axb5 axb5 31.Txa8 Lxa8 32.Ta7 Lb7 33.Db2 Sf8
34.Sbd2 (388.581) 129.5
  9.01	 0:04 	-0.65 	29...Tcb8 30.axb5 axb5 31.Txa8 Lxa8 32.Ta5 Lb7 33.Sa3 Lc8
34.Db2 Ld7 (459.462) 114.8
  9.22	 0:07 	-0.65 	29...Tcb8 30.axb5 axb5 31.Txa8 Lxa8 32.Ta5 Lb7 33.Sa3 Lc8
34.Db2 (847.812) 121.1
 10.01	 0:08 	-0.93 	29...Tcb8 30.axb5 axb5 31.Txa8 Lxa8 32.Ta5 Lb7 33.Sa3 Lc8
34.Dc1 Kg8 35.Lh6 (997.416) 124.6
 10.06	 0:15 	 0.00 	29...Tab8 (1.879.011) 125.2
 10.06	 0:17 	-0.81 	29...Tab8 30.axb5 axb5 31.Ta7 Sf8 32.Sa3 Tc7 33.Ta5 Lc8
34.Db2 S8h7 (2.138.983) 125.8
 10.24	 0:20 	-0.81 	29...Tab8 30.axb5 axb5 31.Ta7 Sf8 32.Sa3 Tc7 33.Ta5 Lc8
34.Db2 S8h7 (2.686.669) 134.3
 11.01	 0:30 	-1.04 	29...Tab8 30.axb5 axb5 31.Ta7 Ld8 32.Sa3 Kg8 33.Sxb5 Sxe4
34.Sc7 Lxc7 (3.981.057) 132.7
 11.02	 0:31 	 0.00 	29...Tcb8 (4.080.888) 131.6
 11.02	 0:33 	-0.92 	29...Tcb8 30.axb5 axb5 31.Txa8 Lxa8 32.Ta5 Lb7 33.Sa3 Lc8
34.Dc1 Lf8 35.Lh6+ (4.365.449) 132.2
 11.31	 1:00 	-0.92 	29...Tcb8 30.axb5 axb5 31.Txa8 Lxa8 32.Ta5 Lb7 33.Sa3 Lc8
34.Dc1 Lf8 35.Lh6+ (8.056.507) 134.2
 12.01	 1:06 	-1.00 	29...Tcb8 30.axb5 axb5 31.Txa8 Lxa8 32.Sa3 Lb7 33.Sxb5 Sxe4
34.Lxe4 Dxb5 (8.906.892) 134.9
 12.02	 1:07 	 0.00 	29...Tab8 (9.092.928) 135.7
 12.02	 1:12 	-0.88 	29...Tab8 30.axb5 axb5 31.Ta7 Ld8 32.Sa3 Kg8 33.Sxb5 Sxe4
34.Lxe4 Dxb5 (9.770.256) 135.6
 12.25	 1:33 	-0.88 	29...Tab8 30.axb5 axb5 31.Ta7 Ld8 32.Sa3 Kg8 33.Sxb5 Sxe4
34.Lxe4 Dxb5 (12.654.433) 136.0
 13.01	 1:51 	-0.96 	29...Tab8 30.axb5 axb5 31.Ta7 Ld8 32.Sa3 Dd7 33.Kh2 Kg8
34.Sxb5 Sxd5 35.Sxd6 (15.120.714) 136.2
 13.04	 2:49 	 0.00 	29...Sxe4 (23.139.979) 136.9
 13.04	 3:44 	-0.87 	29...Sxe4 30.Lxe4 Sf6 31.Sbd2 Sxe4 32.Sxe4 Lxd5 33.Seg5 a5
34.axb5 axb4 (30.337.572) 135.4

I think this position deserves a clother look by all authors of chesssoftware.

PS:Thanks Dan for your helping hand.
Thomas



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