Author: Frank E. Oldham
Date: 20:42:49 06/30/04
Go up one level in this thread
On June 29, 2004 at 14:18:08, Daniel Jackson wrote:
>On June 29, 2004 at 13:31:44, Dan Andersson wrote:
>
>> I'm talking about Rd5 directly. Rd3 can be followed by a black 19. .. Be6 and
>>the game was considered to be undecided. I'm a bit hazy on what has happened the
>>last decade or so. Stephen could probably clue us in.
>>
>>MvH Dan Andersson
>
>I think Be6?! is not so great I feel. In some situations I'd agree that Rd5 is
>best, especially if you can play Rf5!! Threating Rxf6! & Nd5!
>
>Here is a position that fits the bill.
>
>[D]2r4k/ppqbpp1p/3p1npQ/3R4/2r1P1P1/2N2P2/PPP1N3/1K5R w
>
>Daniel
I let crafty19.10 run for a while -- it prefers Rd5 evenually,
but thinks that the difference bewteen that and Rd3 is just a few centipawns...
13-> 6:58 0.09 1. Rd5 Qc7 2. Rd3 e5 3. g5 Nh5 4. Ng3
Rd4 5. Nxh5 gxh5 6. Qxh5 Rxd3 7. Qxh7+
Kf8 8. Qh8+ Ke7 9. Qf6+ Ke8 10. cxd3
(s=4)
14 7:48 0.27 1. Rd5 Qc7 2. Rd3 Qd8 3. g5 Nh5 4.
Nf4 Qf8 5. Qxf8+ Kxf8 6. Nxh5 gxh5
7. Rxh5 Kg7 8. Kd2 Rb4 9. b3 (s=3)
14-> 9:05 0.27 1. Rd5 Qc7 2. Rd3 Qd8 3. g5 Nh5 4.
Nf4 Qf8 5. Qxf8+ Kxf8 6. Nxh5 gxh5
7. Rxh5 Kg7 8. Kd2 Rb4 9. b3 (s=2)
15 10:37 0.15 1. Rd5 Qc7 2. Rd3 Qd8 3. g5 Nh5 4.
Nf4 Qf8 5. Qxf8+ Kxf8 6. Nxh5 gxh5
7. Rxh5 Kg7 8. Kd2 Rb4 9. b3 Be6
15 32:07 0.22 1. Rd3 R4c5 2. g5 Rxg5 3. Rd5 Rxd5
4. Nxd5 Re8 5. Nef4 Bc6 6. Nxf6+ exf6
7. Nh5 Qg5+ 8. Qxg5 fxg5 9. Nf6+ Kg7
10. Nxe8+ Bxe8 11. Kd2
15-> 54:34 0.22 1. Rd3 R4c5 2. g5 Rxg5 3. Rd5 Rxd5
4. Nxd5 Re8 5. Nef4 Bc6 6. Nxf6+ exf6
7. Nh5 Qg5+ 8. Qxg5 fxg5 9. Nf6+ Kg7
10. Nxe8+ Bxe8 11. Kd2 (s=3)
16 105:50 0.49 1. Rd3 Ba4 2. g5 Nh5 3. Nf4 Rxc3 4.
bxc3 Rxc3 5. Nxh5 gxh5 6. Qxh5 Kf8
7. Rd2 Qc5 8. Qh6+ Ke8 9. Rhh2 Ra3
(s=2)
16 140:11 0.52 1. Rd5 Qd8 2. g5 Nh5 3. Nf4 Qf8 4.
Qxf8+ Rxf8 5. Nxh5 gxh5 6. Ra5 a6 7.
Nd5 Re8 8. Kd2 Kg7 9. Nb6 Rc7 10. Nxd7
Rxd7 11. Rxh5
16-> 140:11 0.52 1. Rd5 Qd8 2. g5 Nh5 3. Nf4 Qf8 4.
Qxf8+ Rxf8 5. Nxh5 gxh5 6. Ra5 a6 7.
Nd5 Re8 8. Kd2 Kg7 9. Nb6 Rc7 10. Nxd7
Rxd7 11. Rxh5 (s=3)
17 185:36 0.53 1. Rd5 Qc7 2. Rd3 Qd8 3. Kb1 Qf8 4.
Qh2 Qg7 5. e5 Ne8 6. Nd5 <HT> (s=2)
17-> 268:53 0.53 1. Rd5 Qc7 2. Rd3 Qd8 3. Kb1 Qf8 4.
Qh2 Qg7 5. e5 Ne8 6. Nd5 f6 <HT> (s=4)
18 305:28 0.53 1. Rd5 Qc7 2. Rd3 Qd8 3. Kb1 Qf8 4.
Qh2 Qg7 5. e5 Ne8 6. Nd5 f6 7. exf6
Nxf6 8. Nxf6+ exf6 9. Qxd6 Ba4 10.
Qe6+ Kh8 11. Rc3 Rxc3 12. Nxc3 (s=3)
? 18 475:15 4/44* 1. Rd4
White(1): ?
time=475:17 cpu=388% mat=-1 n=68626388285 fh=38% nps=2.41M
ext-> chk=144633317 cap=133987692 pp=29654305 1rep=451574338
mate=49755430
predicted=0 nodes=68626388285 evals=1379266868
endgame tablebase-> probes=0 hits=0
SMP-> split=4410 stop=941 data=11/32 cpu=1846:09 elap=475:17
Frank
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