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Subject: Re: Zagorskis - Rebel Century (17..Ne5! and 18.Qxb7?)

Author: Dave Gomboc

Date: 14:24:27 10/18/99

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On October 18, 1999 at 13:44:27, Dann Corbit wrote:

>On October 18, 1999 at 11:28:21, Dave Gomboc wrote:
>[snip]
>>>>4r1k1/ppprqpp1/2nbp1p1/1Q6/4P3/2P3P1/PP3PBP/R1B1R1K1 b - - id Zagorskis,D -
>>>>Rebel Century; bm c6e5;
>>>>
>>>>Ed Schroder
>>>
>>>
>>>current version only considers Ne5 at any reasonable time:
>>>
>>>               11    14.72  -1.27   1. ... Ne5 2. Qxb7 Bc5 3. Rf1 Nd3 4.
>>>                                    b4 Nxc1 5. Raxc1 Bb6 6. Qc6 Rd2 7.
>>>                                    a4
>>>         (2)   11->  14.72  -1.27   1. ... Ne5 2. Qxb7 Bc5 3. Rf1 Nd3 4.
>>>                                    b4 Nxc1 5. Raxc1 Bb6 6. Qc6 Rd2 7.
>>>                                    a4
>>>               12    23.92  -1.19   1. ... Ne5 2. Qxb7 Bc5 3. Qb3 Red8
>>>                                    4. Qc2 Qf6 5. h3 Nd3 6. Re2 Nxc1 7.
>>>                                    Rxc1 c6
>>>         (2)   12->  35.59  -1.19   1. ... Ne5 2. Qxb7 Bc5 3. Qb3 Red8
>>>                                    4. Qc2 Qf6 5. h3 Nd3 6. Re2 Nxc1 7.
>>>                                    Rxc1 c6
>>>               13     1:14  -1.18   1. ... Ne5 2. Qxb7 Bc5 3. Qb5 Red8
>>>                                    4. Rf1 Nd3 5. b4 Bb6 6. e5 Nxc1 7.
>>>                                    Raxc1 Rd2 8. Qc4
>>>               13->   1:40  -1.18   1. ... Ne5 2. Qxb7 Bc5 3. Qb5 Red8
>>>                                    4. Rf1 Nd3 5. b4 Bb6 6. e5 Nxc1 7.
>>>                                    Raxc1 Rd2 8. Qc4
>>
>>Yow.  If Black is in good shape here, that eval looks kinda low...
>I think this is typical for any sort of gambit or piece sacrifice.  Computer
>evaluation will reflect the missing piece/pawn but there will be a steady rise
>in the eval.  I suspect in another 3 or 4 ply a big benefit will show up.  Of
>couse it won't be visible for another two moves.

It is typical, and it's a defect that I think programmers are working to
correct.

Dave



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