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Subject: Re: ECM 1621

Author: Miguel A. Ballicora

Date: 15:16:34 09/24/01

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On September 24, 2001 at 17:50:39, Michel Langeveld wrote:

>On September 24, 2001 at 14:38:00, Ed Schröder wrote:
>
>>On September 24, 2001 at 13:32:52, Michel Langeveld wrote:
>>
>>>ECM 1621
>>>
>>>[D] r2q3r/2pkb1p1/p2p1n2/4p1p1/Pp2P1P1/1QP5/1P1P2PP/RNB2RK1 b - - 0 1
>>>
>>>Is 1 .. Rxh2 really winning.
>>>
>>>I see a +2.38 after 1 .. Rxh2 2 Kxh2 ( 2 ... Qh8+ 3. Kg1 Nxg4 4 Rf7 Qh2 5 Kf1
>>>Rh8 6 cxb4 Qh1+ 7 Ke2 Qxg2+ 8 Kd3 Rh3+ 9 Kc2)
>>>
>>>but wat after:
>>>
>>>1 .. Rxh2 2 Rxf6!
>>>
>>>for example:
>>>
>>>2 ... gxf6 3 Kxh2 Qh8+ 4 Kg1 Qh4 (-0.91)
>>>
>>>Michel
>>
>>
>>Mine gets Rxh2 in exactly 2 minutes.
>>
>>00:00:16 11.00  -0.45   1..Nxg4 2.h3 Nf6 3.d4 exd4 4.cxd4
>>                        g4 5.e5 dxe5 6.dxe5 Bc5 7.Be3 Bxe3
>>                        8.Qxe3  (10)
>>
>>00:00:37 11.02  -0.41   1..Qb8 2.Qc4
>>00:01:25 12.00  -0.24   1..Qb8 2.Qc4
>>00:02:00 12.25  -0.20   1..Rxh2 2.Kxh2 Nxg4 3.Kg1 Qh8 4.Rf7
>>                        Qh2 5.Kf1 Rh8 6.cxb4 Qh1 7.Ke2 Qxg2
>>                        8.Kd1 Ne3 9.Qxe3 Qg4 10.Ke1 Rh1
>>                        11.Kf2 Qh4 12.Kg2  (94)
>>
>>00:03:30 13.00  -0.00   1..Rxh2 2.Rxf6 gxf6
>>
>>
>>After 1..Rxh2 2.Rxf6 Rebel gets 2..gxf6 with a slowly rising score.
>>
>>00:00:02 11.00  -0.00   2..gxf6 3.Kxh2 Qh8 4.Kg1 Qh4 5.Qd1
>>                       Rh8 6.Qf1 Qh2 7.Kf2 Qf4 8.Ke1 Qxf1
>>                       9.Kxf1 Rh1 10.Ke2 Rxc1 11.cxb4  (2)
>>
>>00:00:08 12.00  -0.00   2..gxf6 3.Kxh2 Qh8 4.Kg1 Qh4 5.Qd1
>>                       Rh8 6.Qf1 Qh2 7.Kf2 Qf4 8.Ke1 Qxf1
>>                       9.Kxf1 Rh1 10.Ke2 Rxc1 11.cxb4  (6)
>>
>>00:00:17 13.00  0.13   2..gxf6 3.Kxh2 Qh8 4.Kg1 Qh4 5.Qd1
>>                       Rh8 6.Qf1 Qh2 7.Kf2 Qf4 8.Ke1 Qxf1
>>                       9.Kxf1 Rh1 10.Ke2 Rxc1 11.cxb4 Rh1  (14)
>>
>>00:01:04 14.00  0.54   2..gxf6 3.Kxh2 Qh8 4.Kg1 Qh4 5.Qd1
>>                       Rh8 6.Qf1 Qh2 7.Kf2 Qf4 8.Ke1 Qxf1
>>                       9.Kxf1 Rh1 10.Ke2 Rxc1 11.cxb4 d5
>>                       12.b5 axb5  (56)
>>
>>00:02:29 15.00  0.79   2..gxf6 3.Kxh2 Qh8 4.Kg1 Qh4 5.Qd1
>>                       Rh8 6.Qf1 Qh1 7.Kf2 Qxf1 8.Kxf1
>>                       Rh1  (84)
>>
>>Ed
>
>Rebel seems to hit with a lot of these positions the nail on its head.
>It's quite amazing. Rebel seems to be understand very good these positions...
>
>If 2 ... gxf6 then the follow line seems to be forced.
>3 Kxh2 (everythin else at leastr -+ 4.34)
>3 ... Qh8 (everything else at least +- 2.25)
>4 Kg1 (Kg3 = -1.72)
>4 ... Qh4 (everything else at least +- 0.87)
>
>after this white has various opertunities... I shall look at it more closer.
>
>
>
>Michel

Start the analysis from the position after 4... Qh4. It smells bad for white.

Regards,
Miguel



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