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The best move
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Mc Mad



Joined: 08 Mar 2006
Posts: 6965
Location: UK
PostPost subject: Re: The best move    Posted: Tue Jun 26, 2012 11:33 am Reply to topic Reply with quote
Terry McCracken wrote:
Good test position, Jack.


Thanks Terry however it was a bit unfair for me to ask which one is better because as Rodolfo has pointed out they are both equally strong since the lines transpose to the same position with best play after 3 plies:

27. Rxd4 Rc7 28. h5 or 27. h5 Rc7 28. Rxd4
[d] r3q1k1/2r2p1p/b3pBp1/n3P1QP/p1pR4/P2P2PB/2P2P2/R5K1 b - - 0 28
BR ::    :: BQ :: BK ::
::    BR    :: BP :: BP
BB ::    :: BP WB BP ::
BN    ::    WP    WQ WP
BP :: BP WR    ::    ::
WP    :: WP ::    WP WB
   :: WP ::    WP    ::
WR    ::    ::    WK    


However since black is obviously a human player (an engine would have played 26...Bb7 instead with a good chance of holding a draw) then we have to ask why the blunder c4? was played. If you can figure that out then the best response is clearly 27 h5! which is what Fischer played here against Lhamsuren Myagmarsuren in 1967 when he was only 14 years old.
http://www.chessgames.com/perl/chessgame?gid=1044267
http://www.youtube.com/watch?v=jIFQK_eH_UE

After h5 black played 27...cxd3 which quickly loses to 28. Rh4!

Interestingly after 28...Ra7 Fischer played the brilliant 29. Bg2! but he should have played Bg4!!! instead which is even stronger. Cool

[d] 2r1q1k1/r4p1p/b3pBp1/n3P1QP/p2p3R/P2p2PB/2P2P2/R5K1 w - - 2 29
   :: BR :: BQ :: BK ::
BR    ::    :: BP :: BP
BB ::    :: BP WB BP ::
BN    ::    WP    WQ WP
BP ::    BP    ::    WR
WP    :: BP ::    WP WB
   :: WP ::    WP    ::
WR    ::    ::    WK    

I wonder how long it would take an engine to find Bg4!! here? Wink
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Display posts from previous:   
Subject Author Date/Time
The best move Mc Mad Mon Jun 25, 2012 8:22 am
      Re: Which is the best move? Jesús Muñoz Mon Jun 25, 2012 9:37 am
      Re: The best move Louis Zulli Mon Jun 25, 2012 12:12 pm
            Re: The best move Rodolfo Leoni Mon Jun 25, 2012 12:38 pm
      Re: The best move Matthew R. Brades Mon Jun 25, 2012 4:11 pm
            Re: The best move Terry McCracken Mon Jun 25, 2012 8:04 pm
                  Re: The best move kgburcham Mon Jun 25, 2012 11:25 pm
                        Re: The best move Terry McCracken Mon Jun 25, 2012 11:35 pm
                              Re: The best move Mike Libanan Tue Jun 26, 2012 5:54 am
                                    Re: The best move Terry McCracken Tue Jun 26, 2012 5:59 am
      Re: The best move Terry McCracken Tue Jun 26, 2012 6:01 am
            Re: The best move Mc Mad Tue Jun 26, 2012 11:33 am
                  Re: The best move Louis Zulli Tue Jun 26, 2012 11:40 am
                        Re: The best move Mc Mad Tue Jun 26, 2012 4:09 pm
                              Re: The best move Terry McCracken Tue Jun 26, 2012 9:20 pm
                  Re: The best move Terry McCracken Tue Jun 26, 2012 7:25 pm
                        Re: The best move Dan Astrachan Tue Jun 26, 2012 9:04 pm
                  Re: The best move Roberto Munter Tue Jun 26, 2012 8:39 pm
                  Re: The best move kgburcham Tue Jun 26, 2012 11:34 pm
                        Re: The best move Matthew R. Brades Wed Jun 27, 2012 6:33 am
                        Re: The best move Mc Mad Wed Jun 27, 2012 3:40 pm
                              Re: The best move Terry McCracken Wed Jun 27, 2012 3:51 pm
                              Re: The best move kgburcham Wed Jun 27, 2012 10:12 pm
                  Re: The best move Marek Kwiatkowski Wed Jun 27, 2012 2:00 pm
                        Re: The best move Mc Mad Wed Jun 27, 2012 3:38 pm
      Re: The best move Dan Astrachan Tue Jun 26, 2012 7:32 pm
      Re: The best move Eelco de Groot Tue Jun 26, 2012 8:27 pm
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