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

Author: Dann Corbit

Date: 18:22:03 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

Phalanx:
E:\programme\winboard\Phalanx>Phalanx-xxii -l+ -t327680 -r900 -o-
tellics set 1 Phalanx XXII
primary book ./pbook.phalanx, 48749 bytes
secondary book ./sbook.phalanx, 4831506 bytes
learning file ./learn.phalanx, 262144 bytes
[ white, 1 ]
post
post on
[ white, 1 ]
level 40 2400 2400
level: 40 moves in 2400:00, increment 2400 seconds
[ white, 1 ]
2r2rk1/p3p1bp/3qP1p1/1Q1p4/P4P2/3R4/1P4PP/2B2RK1 b - -

2r2rk1/p3p1bp/3qP1p1/1Q1p4/P4P2/3R4/1P4PP/2B2RK1 b - -
    -> increment adds 1440 s to soft time limit
    -> soft time limit 3154.28 s
    -> hard time limit 41599.9 s
  5   -104    54    27099  Rc8xc1  Rf1xc1  Qd6xf4  Rd3-d1  Rf8-b8
  5    -99    57    28247  Rf8-d8  !
  5    -44    66    33507  Rf8-d8  !!
  5    -16    78    43235  Rf8-d8  Bc1-e3  Rc8-b8  Qb5-a5  Rb8xb2  Be3xa7
  5 ->   0:01.18    70779   1 turn
  6    -16   172   116694  Rf8-d8  Rf1-e1  Rc8-c2
  6    -11   181   125002  Rc8xc1  !
  6     38   198   148431  Rc8xc1  Rf1xc1  Qd6xf4  Qb5-c5  Bg7-e5  Pg2-g3
                           Be5-d4  Qc5xd4  Qf4xc1  Rd3-d1  Qc1-c2
  6 ->   0:02.30   186064   1 turn
  7     38   254   223132  Rc8xc1  Rf1xc1  Qd6xf4  Qb5-c5  Bg7-e5  Pg2-g3
  7 ->   0:03.92   439203   0 turns
  8     19   541   612911  Rc8xc1  Rf1xc1  Qd6xf4  Qb5-c5  Bg7-e5  Pg2-g3
                           Be5-d4  Qc5xd4  Qf4xc1  Rd3-d1  Qc1-c2  Kg1-h1
  8 ->   0:10.97  1602327   0 turns
  9     19  1382  2124771  Rc8xc1  Rf1xc1  Qd6xf4  Qb5-c5  Bg7-e5  Pg2-g3
                           Be5-d4  Qc5xd4  Qf4xc1  Rd3-d1  Qc1-c2  Kg1-h1
  9 ->   0:33.25  5862538   0 turns
 10     15  4309  7777994  Rc8xc1  Rf1xc1  Qd6xf4  Qb5-c5  Bg7-e5  Pg2-g3
                           Be5-d4  Qc5xd4  Qf4xc1  Rd3-d1  Qc1-c2  Rd1-f1
                           Rf8xf1  Kg1xf1  Qc2-f5  Kf1-g1
 10 ->   1:36.03 17532093   0 turns
 11     12 12427 22547970  Rc8xc1  Rf1xc1  Qd6xf4  Qb5-c5  Bg7-d4  Qc5xd4
                           Qf4xc1  Rd3-d1  Qc1-c2  Rd1-e1  Pa7-a5
 11 ->   6:53.65 73121111   0 turns
 12     20 49591 86314554  Rc8xc1  Rf1xc1  Qd6xf4  Qb5-c5  Bg7-e5  Pg2-g3
                           Be5-d4  Qc5xd4  Qf4xc1  Rd3-d1  Qc1-c2  Qd4xd5
                           Qc2xb2  Kg1-h1  Qb2-f2
 12 ->  14:59.35 152207498   0 turns




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