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First fail high drops in endgame
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Robert Hyatt



Joined: 27 Feb 2006
Posts: 15875
Location: Birmingham, AL
PostPost subject: Re: First fail high drops in endgame    Posted: Tue May 29, 2007 3:10 pm Reply to topic Reply with quote
Tony wrote:
Hi all,

I think I broke something in my engine, but I'm not sure what. Maybe someone has a clue.

When I go towards the endgame, the percentage first fail high drops to below 80% ( normally above 90%)

I'm not sure how to test/ where to look. I switched off bitbases (thought they were corrupt), switched off lazy eval. No improvement.

anybody had this before ?

Cheers,

Tony


This is often an effect produced by evaluation knowledge not being up to snuff. You rely on the tree search to discover things, and if the best move changes quite a bit, all the move ordering goes to pot and the FH percentage drops. I don't notice this myself, and in fact, often see the fh percentage rise significantly in endgames...
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Subject Author Date/Time
First fail high drops in endgame Tony Mon May 28, 2007 7:49 pm
      Re: First fail high drops in endgame H.G.Muller Mon May 28, 2007 8:45 pm
            Re: First fail high drops in endgame Tony Mon May 28, 2007 8:56 pm
                  Re: First fail high drops in endgame José C. Martínez Galán Tue May 29, 2007 9:06 am
                        Re: First fail high drops in endgame Robert Hyatt Tue May 29, 2007 3:12 pm
                              Re: First fail high drops in endgame José C. Martínez Galán Wed May 30, 2007 7:48 am
                                    Re: First fail high drops in endgame Tony Wed May 30, 2007 8:15 am
                                    Re: First fail high drops in endgame Robert Hyatt Thu May 31, 2007 1:51 am
                                          Re: First fail high drops in endgame José C. Martínez Galán Thu May 31, 2007 10:13 am
                                                Re: First fail high drops in endgame Robert Hyatt Thu May 31, 2007 4:30 pm
                                                      Re: First fail high drops in endgame Tony Thu May 31, 2007 7:16 pm
                                                            Re: First fail high drops in endgame Gerd Isenberg Thu May 31, 2007 7:58 pm
                                                                  Re: First fail high drops in endgame Tony Thu May 31, 2007 8:55 pm
      Re: First fail high drops in endgame Gerd Isenberg Mon May 28, 2007 9:41 pm
            Re: First fail high drops in endgame Tony Mon May 28, 2007 9:53 pm
                  Re: First fail high drops in endgame Gerd Isenberg Mon May 28, 2007 10:35 pm
                        Re: First fail high drops in endgame Tony Tue May 29, 2007 7:08 am
                              Re: First fail high drops in endgame Tony Tue May 29, 2007 11:13 am
      Re: First fail high drops in endgame Chan Rasjid Tue May 29, 2007 8:28 am
      Re: First fail high drops in endgame Robert Hyatt Tue May 29, 2007 3:10 pm
            Re: First fail high drops in endgame Tony Wed May 30, 2007 11:52 am
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