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Transposition table based pruning idea
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J Donald



Joined: 24 Oct 2012
Posts: 260

PostPost subject: Re: Transposition table based pruning idea    Posted: Wed Jan 24, 2018 11:53 pm Reply to topic Reply with quote

AndrewGrant wrote:
Ill note that after making the return value changes to Ethereal, I tried making them to SF

http://tests.stockfishchess.org/tests/view/5a664e570ebc590d945d57bb

Did quite poorly. I imagine it has to do with the fact that SF is probably very accurate in what it prunes from the search tree -- Ethereal not so much.

One additional question -- When you set your flag to skip TT pruning when doing the depth-1 search, do you also skip all other early pruning?


Thanks for that info. I'm running the test now.

No, I don't skip all other early pruning. That is something else that could be tested I suppose.

It never ceases to amaze me how some things work well in one engine but fail clearly in others, despite mostly using similar algorithms.
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Subject Author Date/Time
Transposition table based pruning idea J Donald Mon Dec 25, 2017 10:05 pm
      Re: Transposition table based pruning idea J Donald Mon Dec 25, 2017 10:07 pm
      Re: Transposition table based pruning idea Mark Lefler Mon Jan 01, 2018 5:38 am
            Re: Transposition table based pruning idea J Donald Mon Jan 01, 2018 7:06 am
      Re: Transposition table based pruning idea Andrew Grant Wed Jan 24, 2018 10:59 am
            Re: Transposition table based pruning idea J Donald Wed Jan 24, 2018 1:21 pm
                  Re: Transposition table based pruning idea Andrew Grant Wed Jan 24, 2018 11:22 pm
                        Re: Transposition table based pruning idea J Donald Wed Jan 24, 2018 11:33 pm
                              Re: Transposition table based pruning idea Andrew Grant Wed Jan 24, 2018 11:36 pm
                                    Re: Transposition table based pruning idea J Donald Wed Jan 24, 2018 11:43 pm
                                          Re: Transposition table based pruning idea Andrew Grant Wed Jan 24, 2018 11:47 pm
                                                Re: Transposition table based pruning idea J Donald Wed Jan 24, 2018 11:53 pm
                                                Re: Transposition table based pruning idea J Donald Thu Jan 25, 2018 12:07 am
                                                      Re: Transposition table based pruning idea Andrew Grant Thu Jan 25, 2018 12:12 am
                                                      Re: Transposition table based pruning idea Andrew Grant Fri Jan 26, 2018 3:40 am
                                                            Re: Transposition table based pruning idea J Donald Fri Jan 26, 2018 8:24 am
      Re: Transposition table based pruning idea Alvaro Cardoso Tue Mar 13, 2018 3:13 pm
            Re: Transposition table based pruning idea Alvaro Cardoso Tue Mar 13, 2018 7:02 pm
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