Author: Frank E. Oldham
Date: 16:26:45 08/09/04
Go up one level in this thread
On August 07, 2004 at 17:43:28, Uri Blass wrote:
>On August 06, 2004 at 02:02:14, Frank E. Oldham wrote:
>
>>On August 05, 2004 at 19:42:24, Albert Silver wrote:
>>
>>>The following position arose in Kasparov-Andersson, Tilburg, 1981. Kasparov,
>>>only 18 at the time, played a brilliant pawn sac that left Andersson unable to
>>>develop and to his loss in spectacular fashion. It is a difficult move to find,
>>>and I am not even sure whether any engine will, yet it is unquestionably the
>>>best move.
>>>
>>> Albert
>>>
>>>[D]r2qkb1r/n1pp1pp1/4p1bp/1p6/1P1P3P/P3P1P1/1B1N1P2/R2QKB1R w KQkq -
>>>14.d5 is the move here.
>>
>>crafty19.15, Mac dual G5, finds it pretty easily in ply 14
>>by ply 17 the PV matches the game very well
>>
>> 17-> 18:31 0.61 1. d5 exd5 2. Bg2 c6 3. O-O f6 4. Re1
>> Be7 5. Qg4 Kf7 6. h5 Bd3 7. e4 dxe4
>> 8. Bxe4 Bxe4 9. Nxe4 d5 10. Rad1
>
>I gave movei a long time but even after more than 2 hours of search it can only
>see minimal advantage for white not from the root position but from the position
>after 1.d5 exd5 2.Bg2 c6 3.0-0
>It suggests Rg8
>when the score was near 0 in all the last iterations
>
>[D]r2qkb1r/n2p1pp1/2p3bp/1p1p4/1P5P/P3P1P1/1B1N1PB1/R2Q1RK1 b kq - 0 16
>
>depth=18 -0.01 h8g8 f1e1 f8e7 h4h5 g6h7 e3e4 d5e4 d2e4 d7d5 e4c5 a7c8 a3a4 b5a4
>a1a4 a8a4 d1a4 d8d6 b2d4
>
>Uri
from your starting position, crafty19.15 still thinks Black should play f6
17-> 25:58 0.84 1. ... f6 2. Re1 Bf7 3. e4 Be7 4. exd5
O-O 5. Nb3 Bd6 6. Na5 Bc7 7. dxc6 Bxa5
8. cxd7 Bb6 9. Bxa8 Qxa8 10. Re7 (s=2)
when asked to search Black Rg8, it finds more than 1 pawn advantage for White
13-> 18.25 0.93 1. ... Rg8 2. h5 Bh7 3. Bd4 f5 4. Nf3
Nc8 5. Qd3 Nd6 6. Rfd1 Nc4 7. Ne5 Be7
14-> 1:43 1.04 1. ... Rg8 2. Qg4 Be7 3. Rfe1 h5 4.
Qf4 f5 5. a4 Qb8 6. Be5 d6 7. Bd4 Qd8
8. axb5 Nxb5 9. Rxa8 Qxa8
15-> 3:42 0.97 1. ... Rg8 2. h5 Bh7 3. e4 dxe4 4.
Nxe4 d5 5. Nd2 Bd6 6. Rc1 Kf8 7. Bd4
Bd3 8. Re1 Qd7 9. Qf3
16-> 15:05 1.00 1. ... Rg8 2. Bd4 f5 3. Qb3 Nc8 4.
e4 fxe4 5. Nxe4 Bf7 6. Nc5 g5 7. Qe3+
Ne7 8. Bh3 g4 9. Bg2 d6 10. Ne6 Bxe6
11. Qxe6
17-> 24:31 1.03 1. ... Rg8 2. Bd4 f5 3. Qb3 Bf7 4.
a4 Be6 5. Ra3 Kf7 6. Rfa1 Nc8 7. axb5
Rb8 8. Ra5 Be7 9. Qc3 Rxb5 10. Rxb5
cxb5
Frank
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