Computer Chess Club Archives


Search

Terms

Messages

Subject: position from the gcp test suite that I have doubts about it

Author: Uri Blass

Date: 11:23:35 04/08/03


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



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.