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Test Position 2
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Robert Houdart



Joined: 15 Mar 2010
Posts: 1260
PostPost subject: Re: Test Position 2    Posted: Thu May 03, 2012 9:58 pm Reply to topic Reply with quote
JuLieN wrote:
So was Marc's "solution" correct after all? Is Qxe5 the best move?

A very famous position, and, yes, it wins for white.
I doubt any engine can find Qxe5 on standard hardware, but Houdini shows that the position resulting from 24.Qxe5!!! fxe5 is won after 25.Rf1!
Quite amazing play by Gusev!

Here's Houdini's analysis using 3 threads on a Core i5-750, 2048 MB hash, using 5-man Scorpio bitbases (a new feature for the next Houdini release):
Code:
4q1kr/p6p/1pr1P1pB/4p3/4P3/2P5/PP2B2P/R5K1 w - -

Engine: Houdini DEV 3T Scorpio (2048 MB)
by Robert Houdart

4/15   0:00   -2.56    2.Rf1 Rc7 3.Kg2 b5 4.Bd1 Rc4 5.Bb3 a6
                       6.Rf3 Qe7 7.Rf1 Qe8 8.Rf3 (2.157) 1078

18/39  0:00   -2.56    2.Rf1 Rc7 3.Kg2 b5 4.Bd1 Rc4 5.Bb3 a6
                       6.Rf3 Qe7 7.Rf1 Qe8 8.Rf3 (2.037.589) 6174

19/49  0:01   -2.43++  2.Rf1 (7.275.588) 6160

19/49  0:02   -2.17++  2.Rf1 (14.418.211) 6148

19/60  0:03   -1.54++  2.Rf1 (23.787.324) 6052

19/60  0:05   -1.83    2.Rf1 Rc7 3.Kg2 b5 4.Bd1 a6 5.Bb3 Re7
                       6.Bd5 a5 7.Rf7 Rxf7 8.exf7+ Qxf7
                       9.h4 Qxd5 10.exd5 Kf7 11.Kf3 Rc8
                       12.Ke4 Rc4+ 13.Kxe5 Rxh4 14.Bf4 Rh3
                       15.Kd6 (32.654.376) 6053

20/60  0:05   -1.73++  2.Rf1 (33.688.698) 6053

20/60  0:05   -1.54++  2.Rf1 (35.049.302) 6053

20/60  0:06   -1.12++  2.Rf1 (38.475.899) 6035

20/60  0:10   -0.29++  2.Rf1 (64.861.520) 6019

20/60  0:15   -0.07    2.Rf1 Rc7 3.Kg2 Rg7 4.Bc4 Qe7 5.Bd5 g5
                       6.Rf5 g4 7.Rf6 a5 8.Kg3 a4 9.Bxg7 Kxg7
                       10.Rf7+ Qxf7 11.exf7 h5 12.Kh4 Kf6
                       13.c4 Kg6 14.h3 gxh3 15.Kxh3 (94.202.225) 5984

21/60  0:17   0.00     2.Rf1 Rc7 3.Kg2 Rg7 4.Bc4 b5 5.Bd5 Re7
                       6.Bb3 Qd8 7.Rf7 Qe8 8.Bg5 Qa8 9.Bxe7 Qxe4+
                       10.Kf2 Qh1 11.Bf6 Qxh2+ 12.Ke3 Qf4+
                       13.Kd3 Qf3+ 14.Kd2 Qg2+ 15.Ke3 (102.416.594) 5972

37/79  21:12  0.00     2.Rf1 Rc7 3.Kg2 Rc8 4.Bd1 b5 5.Bb3 Rc4
                       6.Rf3 a6 7.Rf1 Qe7 8.Rf2 Qe8 9.Rf3 Qe7
                       10.Rf2 Qe8 (8.378.393.765) 6584 TB:633

38/81  44:21  +0.05++  2.Rf1 (17.672.449.891) 6639 TB:1.909

38/88  61:46  +0.16++  2.Rf1 (24.140.882.907) 6512 TB:2.510

38/89  81:23  +0.40++  2.Rf1 (31.560.454.854) 6462 TB:3.017

38/91  114:06 +1.30++  2.Rf1 (44.414.876.465) 6487 TB:3.888

38/99  276:44 +2.16    2.Rf1 Rc7 3.Kg2 Rc8 4.Bd1 b5 5.Bb3 Rc4
                       6.Rf3 a6 7.a4 Qe7 8.Rf2 Qg7 9.Bxg7 Kxg7
                       10.Rf7+ Kh6 11.Bxc4 bxc4 12.e7 Re8
                       13.Kg3 g5 14.Rf6+ Kg7 15.Rxa6 (114.769.114.047) 6912
                       TB:19.947
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Display posts from previous:   
Subject Author Date/Time
Test Position 2 Marc MP Sun Apr 08, 2007 7:31 pm
      Re: Test Position 2 Terry McCracken Sun Apr 08, 2007 8:04 pm
            Re: Test Position 2 Alessandro Scotti Sun Apr 08, 2007 8:29 pm
            Re: Test Position 2 John Merlino Mon Apr 09, 2007 4:33 am
            Re: Test Position 2 Robert Basham Tue Apr 10, 2007 1:38 pm
      Solution Marc MP Mon Apr 09, 2007 7:57 am
            Re: Solution Alex Brown Mon Apr 09, 2007 8:56 am
            Re: Solution Terry McCracken Mon Apr 09, 2007 9:49 am
                  Re: Solution Karol Majewski Mon Apr 09, 2007 11:44 am
                        Re: Solution John Merlino Mon Apr 09, 2007 5:40 pm
                              Re: Solution Ignacio Santos Mon Apr 09, 2007 6:13 pm
                                    Re: Solution John Merlino Mon Apr 09, 2007 7:47 pm
                              Re: Solution Karol Majewski Mon Apr 09, 2007 11:14 pm
                                    Re: The Correct Solution? Marc MP Tue Apr 10, 2007 10:08 am
                                          Re: The Correct Solution? Terry McCracken Tue Apr 10, 2007 10:27 am
                                                Re: The Correct Solution? Marc MP Tue Apr 10, 2007 10:46 am
                                                      Re: The Correct Solution? Terry McCracken Tue Apr 10, 2007 11:00 am
                                                            Re: The Correct Solution? lewisg Tue Apr 10, 2007 2:56 pm
                                          Re: The Correct Solution? Uri Blass Tue Apr 10, 2007 2:55 pm
                                          Re: The Correct Solution? Karol Majewski Tue Apr 10, 2007 5:05 pm
                                                Re: The Correct Solution? Greg Simpson Tue Apr 10, 2007 9:14 pm
                                                      Re: The Correct Solution? Karol Majewski Tue Apr 10, 2007 10:04 pm
                                                Re: The Correct Solution? Robin Smith Tue Apr 10, 2007 10:19 pm
                                                      Re: The Correct Solution? Terry McCracken Tue Apr 10, 2007 11:18 pm
                                                            Re: The Correct Solution? Robin Smith Tue Apr 10, 2007 11:34 pm
                                                                  Re: The Correct Solution? Terry McCracken Wed Apr 11, 2007 12:36 am
                                                                  Re: The Correct Solution? lewisg Wed Apr 11, 2007 10:45 am
                                                                        Re: The Correct Solution? Pavel Háse Wed Apr 11, 2007 10:55 am
                                                                        Re: The Correct Solution? Terry McCracken Wed Apr 11, 2007 5:08 pm
                                                                              Re: The Correct Solution? lewisg Wed Apr 11, 2007 5:34 pm
                                                                                    Re: The Correct Solution? Terry McCracken Mon Apr 16, 2007 5:45 am
                                                                                          Re: The Correct Solution? Terry McCracken Mon Apr 16, 2007 4:38 pm
                                                                                          Re: The Correct Solution? Marc MP Mon Apr 16, 2007 5:21 pm
                                                                                          Re: The Correct Solution? Terry McCracken Mon Apr 16, 2007 6:03 pm
                                                                                          Re: The Correct Solution? Terry McCracken Mon Apr 16, 2007 7:08 pm
                                                                                          Re: The Correct Solution? Paulo Soares Tue Apr 17, 2007 4:14 am
                                                                                          Re: The Correct Solution? Marc MP Tue Apr 17, 2007 4:20 am
                                                                                          Re: The Correct Solution? Paulo Soares Tue Apr 17, 2007 5:02 am
                                                                                          Re: The Correct Solution? Julien MARCEL Wed May 02, 2012 12:13 pm
                                                                                          Re: The Correct Solution? Gabriel LEPERLIER Wed May 02, 2012 2:39 pm
                                                                                          Re: The Correct Solution? Gary Wed May 02, 2012 3:40 pm
                                                                                          Re: The Correct Solution? Gabriel LEPERLIER Wed May 02, 2012 6:03 pm
                                                                                          Re: The Correct Solution? Herbert L Wed May 02, 2012 8:08 pm
                                                                                          Re: The Correct Solution? Howard Exner Sun May 06, 2012 2:56 am
            Re: Solution Pavel Háse Tue Apr 10, 2007 11:03 am
                  Re: Solution Ignacio Santos Tue Apr 10, 2007 11:46 am
                        Re: Solution Pavel Háse Tue Apr 10, 2007 1:42 pm
      Re: Test Position 2 kgburcham Wed May 02, 2012 11:15 pm
            Re: Test Position 2 Gabriel LEPERLIER Thu May 03, 2012 10:52 am
                  Re: Test Position 2 Julien MARCEL Thu May 03, 2012 11:31 am
                        Re: Test Position 2 Gabriel LEPERLIER Thu May 03, 2012 12:01 pm
                              Re: Test Position 2 Gary Thu May 03, 2012 3:53 pm
                        Re: Test Position 2 Robert Houdart Thu May 03, 2012 9:58 pm
                              Re: Test Position 2 Gary Fri May 04, 2012 12:07 am
                                    Re: Test Position 2 Robert Houdart Fri May 04, 2012 9:22 am
                                          Re: Test Position 2 Gary Sat May 05, 2012 9:16 pm
                              Re: Test Position 2 Vincent Lejeune Fri May 04, 2012 12:55 pm
                                    Re: Test Position 2 Robert Houdart Fri May 04, 2012 5:06 pm
                                          Re: Test Position 2 Vincent Lejeune Sat May 05, 2012 7:54 pm
                              Re: Test Position 2 Marek Kwiatkowski Sat May 05, 2012 8:03 pm
            Re: Test Position 2 Louis Zulli Thu May 03, 2012 1:27 pm
      Re: Test Position 2 Jouni Uski Tue May 08, 2012 4:49 pm
            Re: Test Position 2 Matthew R. Brades Tue May 08, 2012 6:07 pm
            Re: Test Position 2 Robert Houdart Tue May 08, 2012 7:11 pm
                  Re: Test Position 2 Marek Kwiatkowski Thu May 10, 2012 8:08 pm
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