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Subject: Re: Marshall Attack - test

Author: Uri Blass

Date: 08:38:30 09/17/03

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On September 17, 2003 at 11:22:58, Drexel,Michael wrote:

>On September 17, 2003 at 11:20:25, Uri Blass wrote:
>
>>On September 17, 2003 at 11:09:45, Anthony Cozzie wrote:
>>
>>>On September 17, 2003 at 11:04:12, Uri Blass wrote:
>>>
>>>>On September 17, 2003 at 10:50:59, Anthony Cozzie wrote:
>>>>
>>>>>On September 17, 2003 at 10:11:12, Mihaly Szalai wrote:
>>>>>
>>>>>>1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3
>>>>>>d5 9. exd5 e4 10. Ng5 Bg4 11. Qc2 Ne5 12. Nxe4 Nxe4 13. Qxe4 Bd6 14. d4 f5 15.
>>>>>>Qc2
>>>>>>
>>>>>>[D]r2q1rk1/2p3pp/p2b4/1p1Pnp2/3P2b1/1BP5/PPQ2PPP/RNB1R1K1 b - - 0 15
>>>>>>
>>>>>>Chessprograms are strong in tactics (so they say...)
>>>>>>How fast is your engine finding 15...Nf3+?
>>>>>>
>>>>>>Mihaly
>>>>>
>>>>>I should have known you wouldn't post an easy one ;) Zappa gets owned:
>>>>>1... Ne5-g6 2. h2-h3 Bg4-h5 3. a2-a4 Ra8-b8 4. a4xb5 a6xb5 5. Ra1-a7 Rb8-b6 6.
>>>>>Nb1-d2 Qd8-b8 7. Ra7-a1 Ng6-f4 8. Kg1xh2
>>>>> = (-1.47)	Depth: 13/33	00:05:44.89	201714kN
>>>>>
>>>>>After forcing Nf3+ gxf3 Bxf3 Re5:
>>>>>1... Bd6xe5 2. d4xe5 f5-f4 3. Qc2-d3 Qd8-g5 4. Kg1-f1 Bf3-g2 5. Kf1-e1 Qg5xe5 6.
>>>>>Qd3-e2 Ra8-e8 7. d5-d6 Kg8-h8 8. Qe2xe5 Re8xe5 9. Ke1-d1 c7xd6
>>>>> = (-0.79)	Depth: 12/26	00:00:51.70	30335kN
>>>>>
>>>>>So Zappa would probably play it at 14 ply, but with a very unconvincing score.
>>>>>I'll restart the search and see if it can come up with something more promising
>>>>>(its good to have two computers at work ;)
>>>>>
>>>>>anthony
>>>>
>>>>Are you sure that Bxf3 is the right move
>>>>
>>>>Fritz8 says Qh4
>>>>0.41/12 for white fail high at depth 13
>>>>
>>>>I also do not understand Re5 when Qd3 seems to me better.
>>>>
>>>>Uri
>>>
>>>gxf3 Bxf3 Re5 is what Zappa wants to play <shrug>
>>>
>>>anthony
>>
>>It seems that zappa is not materialistic enough.
>>
>>After gxf3 Qh4 it is a draw but movei needs some minutes to see a draw score
>>and find it only at depth 12(the score drop from 2.49 at depth 11 to 0.00 at
>>depth 12).
>>
>>Finding the draw score from the root position is a hard task and I need to
>>improve my search to find it is a reasonable time.
>>
>>Uri
>
>Thats not a draw, Uri.
>Look at my post.
>
>Michael

It seems that you are right but a draw is a good reason to avoid the line with
white because white wants to win.

Uri



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