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Subject: Re: Kingsafety testset requested

Author: Vincent Diepeveen

Date: 09:06:43 09/22/01

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On September 22, 2001 at 10:14:11, Thomas Mayer wrote:

>Hi Gian-Carlo,
>
>here is a game to that issue:
>
>[Event "1st Intl. CSVN Trn."]
>[Site "Leiden NED"]
>[Date "2001.05.20"]
>[Round "07"]
>[White "Tao"]
>[Black "Quark"]
>[Result "1-0"]
>
>1. e4 e5 2. Bc4 Nf6 3. f4 Nxe4 4. Nc3 Nd6 5. Bb3 exf4 6. Nf3 Be7 7. Ne5
>Bh4+ 8. g3 fxg3 9. O-O gxh2+ 10. Kh1 O-O 11. Qh5 Bf6 12. d4 b6 13. Kxh2 Ba6
>14. Rf3 Bxe5+ 15. dxe5 g6 16. Qh6 Qe7 17. exd6 Qxd6+ 18. Bf4 Qd4 19. Ne4
>Bf1 20. Raxf1
>1-0
>
>
>Quark fall in a booktrap here... last bookmove of Tao was 12. d4 (Quark was
>after 3. f4 out of book)

Well too late already for book traps here IMHO everything loses here.
Is this a position where there is a best move for black anyway?

All moves i get slowly white positive here! From +3.xx for black i jump
down at 10 ply here to 1.xx and a few ply more it's a complete crush of
black!

Not only to do with position i think , especially tactics here.

>Position after 12. d4
>[D]rnbq1rk1/pppp1ppp/3n1b2/4N2Q/3P4/1BN5/PPP4p/R1B2R1K b - d3 0 12
>
>And now take Yace as black and let your own program try to win that with
>different time controls. Black is lost in this position, but that is not so easy
>for white to discover (You will have scores from white about -3, but that is not
>the problem - it must find the win, not the correct score)
>
>I have tested this with several engines, e.g. Crafty failes, Shredder failes
>etc. - Gambit Tiger won quite easily... (Yace was always black) new Quark can
>equalize, with longer time controls it win...
>
>The results may differ concerning your time control, but I think if this
>position occurs any engine should win this with white if it has around 15
>minutes for the rest of the game... in fact not many can... :)
>Because of that, I think this is a nice test for king-safety and how it works...
>(Known as quite good in king safety is for example Phalanx - and well, it does
>also a good job here... older Quarks do very very bad, because they do not see
>the attacking potential here...
>
>Greets, Thomas



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