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Subject: Re: Deep Sacrifice from aCorrespondence game so far only HIARCS findsNxe5

Author: David Rasmussen

Date: 18:14:20 01/15/03

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On January 15, 2003 at 20:26:03, ALI MIRAFZALI wrote:

>The follwing position is from the Correspondence Game between Alik Zilberberg
>(2590) and the 8th World Correspondence Champion Jorn Sloth (2620) of Denmark
>[D]r2nnk2/2pb4/3p1p2/1q1Pp1p1/2N1P1Pp/1NQ4P/4BP2/1R4K1 w
>Alik Zilberberg played 39.Nxe5!!  and the former World Champion Resigned after
>39....Qxe2 40.Nxd7+ Ke7 41.Rel Qb5 42.Nxf6 Nxf6 43.e5 dxe5 44.Rxe5+ Kf7 45.Rxg5
>Qb6 46.Rf5 Kg6 47.Nc5 Nxd5 48.Rxd5 Qb1+ 49.Kg2 Ra1 50.Rg5+ (1-0)
>HIARCS8 finds39.Nxe5!! after 1:42 running at 1800 MHZ.The list of programs that
>have failed even after a very long think include:Fritz Chessmaster Mchess Comet
>GNU chess and the list keeps growing...................

Chezzz neeeds 0 seconds and 7 nodes to find the correct move. But the score is
not convincing and the line differs from the line you gave:

time         nodes depth    score  pv
00:00:00.00    7n  01/00/03 +0.363 1. Nxe5!
00:00:00.00   14n  01/00/03 +1.125 1. Nxe5 Qxe2 2. Nxd7+ (14)
00:00:00.03   63n  01/00/03 ---------------------------------------------------
00:00:00.03  124n  02/01/03 +1.125 1. Nxe5 Qxe2 2. Nxd7+ (124)
00:00:00.06  425n  02/02/04 ---------------------------------------------------
00:00:00.06  861n  03/03/09 +1.164 1. Nxe5 Qxe2 2. Nxd7+ Kg7 (861)
00:00:00.09 3155n  03/04/09 ---------------------------------------------------
00:00:00.09 5096n  04/05/10 +1.189 1. Nxe5 Qxe2 2. Nxd7+ Kg7
                                   3. Qd4 (5096)
00:00:00.12   10kn 04/05/10 ---------------------------------------------------
00:00:00.14   14kn 05/07/11 +0.939 1. Nxe5 Qxe2 2. Nxd7+ Kg7
                                   3. Re1 Qa6 (14599)
00:00:00.19   32kn 05/07/11 ---------------------------------------------------
00:00:00.22   48kn 06/09/12 +0.849 1. Nxe5 Qxe2 2. Nxd7+ Kg7
                                   3. Nd2 Ra2 4. Rb2 (48377)
00:00:00.34  104kn 06/09/12 ---------------------------------------------------
00:00:00.72  319kn 07/12/16 +0.139 1. Nxe5 Qxe2 2. Nxd7+ Ke7
                                   3. Re1 Qb5 4. Nxf6 Nxf6
                                   5. Qxc7+ (319973)
00:00:00.89  412kn 07/12/16 ---------------------------------------------------
00:00:01.06  507kn 08/14/16 -0.101 1. Nxe5 Qxe2 2. Nxd7+ Ke7
                                   3. Re1 Qb5 4. Nxf6 Nxf6
                                   5. Qxc7+ Qd7 (507431)
00:00:01.48  757kn 08/14/18 ---------------------------------------------------
00:00:01.84  973kn 09/17/18 -0.026 1. Nxe5 Qxe2 2. Nxd7+ Ke7
                                   3. Re1 Qb5 4. Nxf6 Nxf6
                                   5. Qxc7+ Qd7 6. Qc4 (973875)
00:00:02.81 1552kn 09/17/19 ---------------------------------------------------
00:00:03.70 2086kn 10/18/21 -0.291 1. Nxe5 Qxe2 2. Nxd7+ Ke7
                                   3. Re1 Qb5 4. Nxf6 Nxf6
                                   5. Qxc7+ Qd7 6. Qc1 Nf7 (2086114)
00:00:07.64 4465kn 10/18/21 ---------------------------------------------------
00:00:09.47 5540kn 11/21/22 -0.201 1. Nxe5 Qxe2 2. Nxd7+ Ke7
                                   3. Re1 Qb5 4. Nxf6 Nxf6
                                   5. Qxc7+ Qd7 6. Qc1 Nf7
                                   7. Nd4 (5540939)
00:00:13.94 8254kn 11/21/22 ---------------------------------------------------
00:00:17.67   10Mn 12/21/22 -0.225 1. Nxe5 Qxe2 2. Nxd7+ Ke7
                                   3. Re1 Qb5 4. Nxf6 Nxf6
                                   5. Qxc7+ Qd7 6. Qc1 Nf7
                                   7. f4 Qa7+ 8. Kg2 (10448059)
00:00:25.00   15Mn 12/21/22 ---------------------------------------------------

/David



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