Author: J. Wesley Cleveland
Date: 12:41:03 04/08/03
Go up one level in this thread
On April 08, 2003 at 14:23:35, Uri Blass wrote:
>ECM.1294
>[D]2r2rk1/p3p1bp/3qP1p1/1Q1p4/P4P2/3R4/1P4PP/2B2RK1 b - - 0 1
>bm Rxc1
>
>I am not sure if it is the best move.
>
>Black has other options like Rc5 and d4
>
>Fritz8 does not like Rxc1 at least after a short analysis and if I give it the
>position after Rxc1 Rxc1 it cannot see more than getting the material back.
>
>New game
>[D]2r2rk1/p3p1bp/3qP1p1/1Q1p4/P4P2/3R4/1P4PP/2B2RK1 b - - 0 1
>
>Analysis by Fritz 8:
>
>1...Rfd8 2.Qa5 a6 3.Qe1 Rc6 4.Qa5 Rc2
> ² (0.53) Depth: 7/19 00:00:00 124kN
>1...Rfd8 2.Re1 Rc2 3.Rd2 a6 4.Qa5
> ² (0.37) Depth: 8/20 00:00:00 363kN
>1...Rc5!
> ² (0.34) Depth: 8/20 00:00:01 506kN
>1...Rc5 2.Qb3 Qxe6 3.Rfd1 g5 4.fxg5 Rfc8 5.Be3
> ² (0.31) Depth: 8/21 00:00:01 565kN
>1...Rc5!
> = (0.03) Depth: 9/22 00:00:02 815kN
>1...Rc5--
> ² (0.31) Depth: 10/24 00:00:04 1355kN
>1...Rc5 2.Qb3 Rb8
> ² (0.31) Depth: 10/24 00:00:04 1481kN
>1...Rc5 2.Qb3 Qxe6 3.Rfd1 Rd8 4.Be3 Rc4 5.Bxa7 Rxf4 6.a5 Rd7 7.Bd4
> ² (0.34) Depth: 11/25 00:00:11 4082kN
>1...d4!
> ² (0.31) Depth: 11/29 00:00:18 7318kN
>1...d4 2.Qb3 Rb8 3.Qa2 Qc5 4.b3 Qf5 5.Qe2 Rb6 6.Re1 Rfb8 7.g4
> = (0.25) Depth: 12/30 00:00:29 12110kN
>1...d4 2.Qb3 Rb8 3.Qa2 Rfc8 4.b4 Rxb4 5.Ba3 Qa6 6.Bxb4 Qxd3 7.Bxe7 Qe3+
> = (0.16) Depth: 13/34 00:01:16 32916kN
>1...d4 2.Qb3 Rb8 3.Qa2 Rfc8 4.f5 Be5 5.fxg6 hxg6 6.g3 Rc6 7.Bf4 Bxf4
> = (0.09) Depth: 14/38 00:03:05 81404kN
>
>(Blass, Tel-Aviv 08.04.2003)
>
>After Rxc1 Rxc1
>
>New game
>5rk1/p3p1bp/3qP1p1/1Q1p4/P4P2/3R4/1P4PP/2R3K1 b - - 0 1
>
>Analysis by Fritz 8:
>
>2...Qxf4 3.Qc5 Be5 4.g3 Bd4+ 5.Qxd4 Qxc1+ 6.Rd1 Qc2
> ² (0.44) Depth: 7/19 00:00:00 69kN
>2...Qxf4 3.Qc5 Be5 4.g3 Bd4+ 5.Qxd4 Qxc1+ 6.Rd1 Qc2
> ² (0.44) Depth: 8/18 00:00:00 117kN
>2...Qxf4 3.Qc5 Be5 4.g3 Bd4+ 5.Qxd4 Qxc1+ 6.Rd1 Qc2
> ² (0.44) Depth: 9/24 00:00:00 301kN
>2...Qxf4 3.Qc5 Be5 4.g3 Bd4+ 5.Qxd4 Qxc1+ 6.Rd1 Qc2 7.a5 Qe2 8.b4 Qxe6 9.Qxa7
> ² (0.47) Depth: 10/22 00:00:01 675kN
>2...Qxf4 3.Qc5 Be5 4.g3 Bd4+ 5.Qxd4 Qxc1+ 6.Rd1 Qc2 7.a5 Qe2 8.b4 Qxe6 9.Qxa7
> ² (0.47) Depth: 11/25 00:00:03 1519kN
>2...Qxf4 3.Qc5 Be5 4.g3 Bd4+ 5.Qxd4 Qxc1+ 6.Rd1 Qc2 7.a5 h6 8.b4 Qe2 9.Qxd5
> ² (0.50) Depth: 12/28 00:00:09 3801kN
>2...Qxf4 3.Qc5 Be5 4.g3 Bd4+ 5.Qxd4 Qxc1+ 6.Rd1 Qc2 7.a5 Qe2 8.b4 Qxe6
> ² (0.41) Depth: 13/32 00:00:22 9811kN
>2...Qxf4 3.Qc5 Be5 4.g3 Bd4+ 5.Qxd4 Qxc1+ 6.Rd1 Qc2 7.a5 Qe2 8.Qxd5 Qxb2
> ² (0.34) Depth: 14/34 00:00:51 23709kN
>2...Qxf4 3.Qc5 Be5 4.g3 Bd4+ 5.Qxd4 Qxc1+ 6.Rd1 Qc2 7.a5 Qe2 8.Qxd5 Qf2+ 9.Kh1
>Qxb2
> ² (0.34) Depth: 15/39 00:01:59 55759kN
>
>(Blass, Tel-Aviv 08.04.2003)
>
>Uri
After a long search, crafty says Rxc1 is a draw, and d4 is a very slight
advantage for black.
18-> 2396:19 -0.04 1. ... d4 2. Qb3 Rb8 3. Qd1 Qxe6 4.
Re1 Qf7 5. b3 Rb7 6. Bb2 Qxf4 7. Bxd4
Bxd4+ 8. Rxd4 Qf2+ 9. Kh1 a5 10. Rd8
Qxe1+ 11. Qxe1 Rxd8 12. Qe6+ Kf8 13.
Kg1
18-> 41:16 0.00 1. ... Rxc1 2. Rxc1 Qxf4 3. Qc5 Bd4+
4. Qxd4 Qxc1+ 5. Rd1 Qc2 6. g3 a5 7.
Qxd5 Qxb2 8. Rf1 Qb6+ 9. Kg2 Qb2+ 10.
Kg1
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