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For Marco---possible Stockfish bug
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Uri Blass



Joined: 08 Mar 2006
Posts: 5958
Location: Tel-Aviv Israel
PostPost subject: Re: For Marco---possible Stockfish bug    Posted: Thu Feb 02, 2012 10:41 pm Reply to topic Reply with quote
Robert wrote:
Hi Marco

be ironic now can't help to solve the problem pointed .

If other engines solve the problem and Stockfish dont, _AND_ this is not a bug, where the algorithm is failing?


PS.: This is the question...

Rolling Eyes


I think that the problem is that there is more than one zugzwang
After
1.Kh6 Be5 2.Kg7 Bh2 3.c4 bxc4 4.e5 Bxe5 5.bxc4 black is in zugzwang and after 5...Bxf6+ gxf6 there is another zugzwang and even if you use zugzwang detection you may evaluate Rh8 Kxh8 as better for black and fail to detect the zugzwang.
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Display posts from previous:   
Subject Author Date/Time
For Marco---possible Stockfish bug Louis Zulli Tue Jan 31, 2012 5:49 pm
      Re: For Marco---possible Stockfish bug Marco Costalba Tue Jan 31, 2012 7:12 pm
      Re: For Marco---possible Stockfish bug Joona Kiiski Wed Feb 01, 2012 7:56 am
            Re: For Marco---possible Stockfish bug Marek Kwiatkowski Wed Feb 01, 2012 10:02 am
                  Re: For Marco---possible Stockfish bug Joona Kiiski Wed Feb 01, 2012 12:48 pm
                        Re: For Marco---possible Stockfish bug Louis Zulli Wed Feb 01, 2012 2:41 pm
                              Re: For Marco---possible Stockfish bug Marek Kwiatkowski Wed Feb 01, 2012 7:15 pm
                                    Re: For Marco---possible Stockfish bug Marco Costalba Wed Feb 01, 2012 7:23 pm
                                          Re: For Marco---possible Stockfish bug Marek Kwiatkowski Wed Feb 01, 2012 9:05 pm
                                    Re: For Marco---possible Stockfish bug Joona Kiiski Wed Feb 01, 2012 8:32 pm
                                          Re: For Marco---possible Stockfish bug Marek Kwiatkowski Wed Feb 01, 2012 9:02 pm
                                                Re: For Marco---possible Stockfish bug Joona Kiiski Thu Feb 02, 2012 8:30 am
                                                      Re: For Marco---possible Stockfish bug Marek Kwiatkowski Thu Feb 02, 2012 8:36 am
                                                            Re: For Marco---possible Stockfish bug Joona Kiiski Thu Feb 02, 2012 10:52 am
                                                                  Re: For Marco---possible Stockfish bug Marek Kwiatkowski Thu Feb 02, 2012 2:08 pm
                                                                        Re: For Marco---possible Stockfish bug Joona Kiiski Thu Feb 02, 2012 3:45 pm
                                                                              Re: For Marco---possible Stockfish bug Marek Kwiatkowski Thu Feb 02, 2012 5:32 pm
                                                                                    Re: For Marco---possible Stockfish bug david nash Thu Feb 02, 2012 6:14 pm
                                                                                    Re: For Marco---possible Stockfish bug Richard Vida Thu Feb 02, 2012 7:23 pm
                                                                                          Re: For Marco---possible Stockfish bug Marco Costalba Thu Feb 02, 2012 8:04 pm
                                                                                          Re: For Marco---possible Stockfish bug Robert Wagner Campos Thu Feb 02, 2012 8:59 pm
                                                                                          Re: For Marco---possible Stockfish bug Uri Blass Thu Feb 02, 2012 10:41 pm
                                                                                          Re: For Marco---possible Stockfish bug Marek Kwiatkowski Thu Feb 02, 2012 9:01 pm
                                                                                          Re: For Marco---possible Stockfish bug Sven Schüle Thu Feb 02, 2012 11:28 pm
                                                                                          Re: For Marco---possible Stockfish bug Robert Wagner Campos Fri Feb 03, 2012 12:26 pm
                                                                                          Re: For Marco---possible Stockfish bug Uri Blass Fri Feb 03, 2012 2:14 pm
                                                                                          Re: For Marco---possible Stockfish bug Marek Kwiatkowski Fri Feb 03, 2012 2:21 pm
                                                                                          Re: For Marco---possible Stockfish bug Evert Glebbeek Fri Feb 03, 2012 2:41 pm
                                                                                          Re: For Marco---possible Stockfish bug Marek Kwiatkowski Fri Feb 03, 2012 2:58 pm
                                                                                          Re: For Marco---possible Stockfish bug Sam Hamilton Fri Feb 03, 2012 3:23 pm
                                                                                          Re: For Marco---possible Stockfish bug Evert Glebbeek Sat Feb 04, 2012 7:07 am
                                                                                          Re: For Marco---possible Stockfish bug Marek Kwiatkowski Sat Feb 04, 2012 9:31 am
                                                                                          Re: For Marco---possible Stockfish bug Marek Kwiatkowski Sun Feb 05, 2012 4:20 pm
                                                                                          Re: For Marco---possible Stockfish bug Marek Kwiatkowski Sun Feb 05, 2012 5:24 pm
                                                                                          Re: For Marco---possible Stockfish bug Marek Kwiatkowski Wed Feb 08, 2012 1:54 pm
                                                                                          Re: For Marco---possible Stockfish bug Joerg Oster Wed Feb 08, 2012 5:14 pm
                                                                                          Re: For Marco---possible Stockfish bug Marek Kwiatkowski Wed Feb 08, 2012 5:49 pm
                                                                                          Re: For Marco---possible Stockfish bug Marek Kwiatkowski Sun Feb 19, 2012 5:37 pm
                                                                                          Re: For Marco---possible Stockfish bug Robert Wagner Campos Fri Feb 03, 2012 6:33 pm
                                                                                          Re: For Marco---possible Stockfish bug Robert Wagner Campos Fri Feb 03, 2012 6:15 pm
                                                                                          Re: For Marco---possible Stockfish bug Louis Zulli Sat Feb 04, 2012 1:50 am
                                                Re: For Marco---possible Stockfish bug Marek Kwiatkowski Fri Feb 03, 2012 2:08 pm
                                                      Re: For Marco---possible Stockfish bug Kevin Hearn Fri Feb 03, 2012 3:49 pm
                                                            Re: For Marco---possible Stockfish bug Marek Kwiatkowski Fri Feb 03, 2012 6:45 pm
                              Re: For Marco---possible Stockfish bug Joerg Oster Wed Feb 01, 2012 8:38 pm
                                    Re: For Marco---possible Stockfish bug Louis Zulli Wed Feb 01, 2012 9:14 pm
                                          Re: For Marco---possible Stockfish bug Joerg Oster Thu Feb 02, 2012 7:23 am
                                                Re: For Marco---possible Stockfish bug Marek Kwiatkowski Thu Feb 02, 2012 8:29 am
                                    Re: For Marco---possible Stockfish bug Louis Zulli Wed Feb 01, 2012 9:38 pm
                                          Re: For Marco---possible Stockfish bug Marek Kwiatkowski Wed Feb 01, 2012 9:54 pm
                                                Re: For Marco---possible Stockfish bug Louis Zulli Wed Feb 01, 2012 11:05 pm
                                                      Re: For Marco---possible Stockfish bug Marek Kwiatkowski Wed Feb 01, 2012 11:11 pm
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