by Martin Brown <|||newspam|||@[EMAIL PROTECTED]
>
Mar 31, 2008 at 01:14 PM
In message
<d5121d2d-7c3b-432a-bf8e-ffe1ed66136c@[EMAIL PROTECTED]
>,
Sanny <softtanks@[EMAIL PROTECTED]
> writes
>I played Rybka against Easy Level. Easy level was 2 pawns up in the
>Opening. Still Rybka played very good moves and trap the Easy Levels
>Rook.
>
>And win the Game in just 23 moves.
Rybka was never in any danger. It was already winning out of the
opening. Surprisingly the position after 10. Bd3 has occurred in match
play - there are 6 of them in 2006 database - 3 wins 3 losses. The wins
for white from this position are short and brutal.
>10. Be2-d3{20} Qe4-d5{38}
10. Nd4 most commonly played, Bf3 also playable.
10. ... Qd5 is not such a good choice of square as it can be immediately
harassed. Qa4 or Qh4 look to be plausible.
>14. Ra1-b1{20} h7-h6{26}
14. Re8 or d6 might just hold things together.
>15. Bc1-b2{30} Qf6-d6{50}
15. ... Qg5 would be better
>17. Bd3-h7{20} f7-f5{32}
The exchange is already lost 17. ...h5 or ....g5 are marginally less bad
continuations.
>22. Bb2-g7{22} d7-d5{36}
Here there is a real puzzle. This permits a mate in 4, but there are two
moves available which will hold out for a good while longer.
22. .... Ne5 #10 or .... Qe5 #9 a #4 mate should be within Getclubs
visibility of 8 ply search depth so why didn't it play to prolong the
game?
Everything else is #4 or worse.
>23. Bg7-h8{20} Qf4-e5{28}
Same comment applies here. Most engines would play 23. ....Qxg2+ to
delay the inevitable, followed by 24. .... Bd7, 25. .... Bd8
Regards,
--
Martin Brown
--
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