Author: Frank E. Oldham
Date: 12:59:57 05/07/04
Go up one level in this thread
On May 07, 2004 at 03:27:39, Martin Baumung wrote:
>Hi all,
>
>in a game between Patriot 1.2.2 vs. CM9000 SKR the following position came up.
>
>[D]4r2k/p2q2p1/7p/8/2Prpp2/2Q3P1/PP2RP1P/4R1K1 w
>
>Patriot played c4c5 and lost. I checked this position with some other engines
>and many also play c4c5. Any engine NOT playing c4c5 (and knowing why)?
>
>Best,
>
>Martin
crafty-19,10f quickly gets a big fail-low (~3.2 !) in ply 12 and shifts to f3
10-> 4.82 1.28 1. c5 Qd5 2. gxf4 Rc4 3. Qa3 Rxc5 4.
f3 e3 5. Rxe3 Qd4 (s=4)
11 7.64 1.28 1. c5 Qh3 2. f3 Rd3 3. Qxd3 exd3 4.
Rxe8+ Kh7 5. gxf4 Qxf3 6. R1e3 Qg4+
7. Rg3 Qf5 (s=3)
11-> 10.14 1.28 1. c5 Qh3 2. f3 Rd3 3. Qxd3 exd3 4.
Rxe8+ Kh7 5. gxf4 Qxf3 6. R1e3 Qg4+
7. Rg3 Qf5
12 11.52 -- 1. c5
12 18.75 -1.91 1. c5 f3 2. Re3 Rf8 3. Kh1 Rd2 4. Qe5
Rxf2 5. Qd6 Qf5 6. Rxe4 Rxb2
12 20.55 -0.56 1. Qc2 f3 2. Re3 Rf8 3. Kh1 Rd2 4.
Qxe4 Rxf2 5. Qe7 Qxe7 6. Rxe7 Rxb2
7. Rxa7
12 52.86 -0.04 1. Kh1 f3 2. Re3 Rd8 3. b3 Qh3 4. Rg1
Rd1 5. Ree1 R1d2 6. Qe3 a5 7. Rgf1
12 1:12 0.38 1. f3 fxg3 2. fxe4 Rd3 3. Qc2 Qh3 4.
c5 gxh2+ 5. Kh1 Qf3+ 6. Rg2 Re5 7.
c6 Rh5
12-> 1:32 0.38 1. f3 fxg3 2. fxe4 Rd3 3. Qc2 Qh3 4.
c5 gxh2+ 5. Kh1 Qf3+ 6. Rg2 Re5 7.
c6 Rh5 (s=4)
letting it think for a while, it arrives at an eval of 0.01 for the PV
1. f3 fxg3 2. fxe4 Rd3 3. Qc2 Rf8 4. Kg2 gxh2
5. Kh1 Rdf3 6. Re3 Rf2 7. R3e2 R2f3 (s=4)
Frank
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