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EGTB Testsuite
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Mike Scheidl



Joined: 09 Mar 2006
Posts: 1450

PostPost subject: Re: EGTB Testsuite    Posted: Sat Feb 02, 2008 1:37 pm Reply to topic Reply with quote

But basically, this is easy to tell without any specific test positions, because in a late endgame position (i.e. 8 or 7 pieces):

1. using an engine which does access Nalimovs will cause drive activity (HD or USB, most of these devices will tell it by drive LEDs flashing)

2. using an engine which does not access Nalimovs will not cause drive activity.

(I realise that it is more difficult to tell with bitbases)

Anyway, I have a good test position but only if you use 3- and 4-piece Nalimovs only:

[D]7k/4K1n1/8/6P1/8/3B4/8/8 w - - 0 1
   ::    ::    ::    BK
::    ::    WK    BN    
   ::    ::    ::    ::
::    ::    ::    WP    
   ::    ::    ::    ::
::    :: WB ::    ::    
   ::    ::    ::    ::
::    ::    ::    ::    


This is a study by Sachodjakin. ONLY 1.Bg6 wins. Even with 3- and 4-piece tbs. present, many engines accessing them have trouble to realise that. But with 5-piece tbs., they will of course immediatly choose 1.Bg6. You could run multi-pv with 2 variations to see the difference clearly. - Attention: For that test, you need to switch off the GUI (interface) access for tablebases if available, like in Fritz. Because we want to know what the engines do (only), in this case.
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Regards, Mike
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Subject Author Date/Time
EGTB Testsuite Kirill Kryukov Sat Feb 02, 2008 12:48 pm
      Re: EGTB Testsuite F. Bluemers Sat Feb 02, 2008 1:01 pm
            Re: EGTB Testsuite Kirill Kryukov Sat Feb 02, 2008 5:12 pm
                  Re: EGTB Testsuite F. Bluemers Sat Feb 02, 2008 5:41 pm
                        Re: EGTB Testsuite Kirill Kryukov Sun Feb 03, 2008 6:31 am
      Re: EGTB Testsuite Mike Scheidl Sat Feb 02, 2008 1:37 pm
            Re: EGTB Testsuite Kirill Kryukov Sat Feb 02, 2008 5:08 pm
                  Re: EGTB Testsuite Werner Schüle Sat Feb 02, 2008 5:29 pm
                        Re: EGTB Testsuite Kirill Kryukov Sun Feb 03, 2008 7:02 am
      Re: EGTB Testsuite Robin Smith Sat Feb 02, 2008 11:09 pm
            Re: EGTB Testsuite George Tsavdaris Sun Feb 03, 2008 12:01 am
                  Re: EGTB Testsuite Robin Smith Sun Feb 03, 2008 1:03 am
                  Re: EGTB Testsuite Robin Smith Sun Feb 03, 2008 7:08 am
                        Re: EGTB Testsuite Kirill Kryukov Sun Feb 03, 2008 7:30 am
                              Re: EGTB Testsuite Robin Smith Sun Feb 03, 2008 8:45 am
                                    Re: EGTB Testsuite Kirill Kryukov Sun Feb 03, 2008 10:19 am
                                          Re: EGTB Testsuite Robin Smith Sun Feb 03, 2008 10:33 am
                                                Re: EGTB Testsuite Kirill Kryukov Sun Feb 03, 2008 12:18 pm
                                                Re: EGTB Testsuite Greg Simpson Sun Feb 03, 2008 5:52 pm
                        Re: EGTB Testsuite Mike Scheidl Sun Feb 03, 2008 7:52 am
            Re: EGTB Testsuite Kirill Kryukov Sun Feb 03, 2008 7:04 am
      Re: EGTB Testsuite Kirill Kryukov Mon Feb 04, 2008 6:19 am
            Re: EGTB Testsuite Graham Banks Mon Feb 04, 2008 6:58 am
                  Re: EGTB Testsuite Spock Mon Feb 04, 2008 7:35 am
            Re: EGTB Testsuite Robin Smith Mon Feb 04, 2008 8:33 am
                  Re: EGTB Testsuite Kirill Kryukov Mon Feb 04, 2008 9:08 am
      Re: EGTB Testsuite MoKy Mon Feb 04, 2008 11:27 am
            Re: EGTB Testsuite Kirill Kryukov Mon Feb 04, 2008 11:56 am
            Re: EGTB Testsuite Uri Blass Mon Feb 04, 2008 1:01 pm
                  Re: EGTB Testsuite Jouni Uski Mon Feb 04, 2008 3:55 pm
                        Re: EGTB Testsuite MoKy Mon Feb 04, 2008 4:22 pm
                              Re: EGTB Testsuite Kirill Kryukov Mon Feb 04, 2008 5:33 pm
                        Re: EGTB Testsuite Kirill Kryukov Mon Feb 04, 2008 5:30 pm
            Re: EGTB Testsuite Kirill Kryukov Mon Feb 04, 2008 5:15 pm
      Re: EGTB Testsuite Dann Corbit Mon Feb 04, 2008 11:15 pm
            Re: EGTB Testsuite Kirill Kryukov Tue Feb 05, 2008 3:57 am
                  Re: EGTB Testsuite Edmund Moshammer Tue Feb 05, 2008 5:44 pm
                        Re: EGTB Testsuite Edmund Moshammer Tue Feb 05, 2008 6:07 pm
                              Re: EGTB Testsuite David Dahlem Tue Feb 05, 2008 6:22 pm
                                    Re: EGTB Testsuite Jouni Uski Tue Feb 05, 2008 9:32 pm
                                    Re: EGTB Testsuite Kirill Kryukov Wed Feb 06, 2008 5:26 pm
                                          Re: EGTB Testsuite David Dahlem Wed Feb 06, 2008 6:06 pm
                              Re: EGTB Testsuite Kirill Kryukov Wed Feb 06, 2008 5:11 pm
                              Re: EGTB Testsuite Kirill Kryukov Wed Feb 06, 2008 5:23 pm
                              Re: EGTB Testsuite Alex Brown Thu Feb 07, 2008 12:49 am
                        Re: EGTB Testsuite David Dahlem Tue Feb 05, 2008 6:20 pm
                        Re: EGTB Testsuite Kirill Kryukov Thu Feb 07, 2008 12:23 am
      Re: EGTB Testsuite Tano-Urayoan Russi Roman Thu Feb 07, 2008 4:36 am
            Re: EGTB Testsuite Kirill Kryukov Thu Feb 07, 2008 10:49 am
                  Re: EGTB Testsuite Tano-Urayoan Russi Roman Sun Feb 10, 2008 8:43 am
                        Re: EGTB Testsuite Tano-Urayoan Russi Roman Sun Feb 10, 2008 10:00 am
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