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When does a cut-node became an all-node?
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Alcides Schulz



Joined: 07 Jan 2011
Posts: 50
Location: USA
PostPost subject: Re: When does a cut-node became an all-node?    Posted: Tue Mar 27, 2012 5:41 pm Reply to topic Reply with quote
bob wrote:
sedicla wrote:
According to chess wiki programming is when after all candidate moves are tried, but fruit does it after first move is tried.

I thinking of trying doing things differently according node type, for example:
cut-node - use static null move (like stockfish) and don't do razoring (eval + margin < beta).
all-node - no static null move, try razor, no ordering for quiet moves...

What you guys think is a good time to switch a cut-node to all-node?

Thanks.


First, why does it matter? Are you somehow trying to type a node as PV, CUT or ALL, and then do things differently if it is CUT as opposed to ALL? A
"CUT" node becomes an ALL node when there is no cutoff to be found. Most common reason is poor move ordering. This is not the best move here although we thought it was, so another move will cause a cutoff later. On occasion, it is not ordering, but is a depth issue. Suddenly you see deep enough to see that the score is worse than you expect, no matter which
move you try, so none cause a cutoff...


Well, thats what im trying to figure it out, if it matters or not. I can see that is your opinion that it does not matter.
My idea is exactly that, do different things at all and cut nodes.
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Subject Author Date/Time
When does a cut-node became an all-node? Alcides Schulz Tue Mar 27, 2012 11:55 am
      Re: When does a cut-node became an all-node? Vincent Diepeveen Tue Mar 27, 2012 12:37 pm
      Re: When does a cut-node became an all-node? Lucas Braesch Tue Mar 27, 2012 1:03 pm
            Re: When does a cut-node became an all-node? Edmund Moshammer Tue Mar 27, 2012 1:24 pm
                  Re: When does a cut-node became an all-node? Vincent Diepeveen Tue Mar 27, 2012 4:52 pm
            Re: When does a cut-node became an all-node? Thomas Petzke Tue Mar 27, 2012 1:28 pm
      Re: When does a cut-node became an all-node? Larry Kaufman Tue Mar 27, 2012 1:46 pm
            Re: When does a cut-node became an all-node? Alcides Schulz Tue Mar 27, 2012 2:03 pm
            Re: When does a cut-node became an all-node? Thomas Petzke Tue Mar 27, 2012 2:42 pm
            Re: When does a cut-node became an all-node? Vincent Diepeveen Tue Mar 27, 2012 5:11 pm
                  Re: When does a cut-node became an all-node? Larry Kaufman Tue Mar 27, 2012 6:15 pm
                        Re: When does a cut-node became an all-node? Vincent Diepeveen Tue Mar 27, 2012 6:22 pm
                              Re: When does a cut-node became an all-node? Larry Kaufman Tue Mar 27, 2012 6:31 pm
                                    Re: When does a cut-node became an all-node? Vincent Diepeveen Tue Mar 27, 2012 6:43 pm
                                          Re: When does a cut-node became an all-node? Larry Kaufman Tue Mar 27, 2012 7:17 pm
                                                Re: When does a cut-node became an all-node? Vincent Diepeveen Wed Mar 28, 2012 8:00 am
                                                      Re: When does a cut-node became an all-node? Larry Kaufman Wed Mar 28, 2012 2:08 pm
                                                            Re: When does a cut-node became an all-node? Vincent Diepeveen Wed Mar 28, 2012 5:07 pm
                                                                  Re: When does a cut-node became an all-node? Larry Kaufman Wed Mar 28, 2012 5:55 pm
                                                                        Re: When does a cut-node became an all-node? Vincent Diepeveen Wed Mar 28, 2012 8:33 pm
                                                                              Re: When does a cut-node became an all-node? Larry Kaufman Wed Mar 28, 2012 9:16 pm
                                                                                    Re: When does a cut-node became an all-node? Vincent Diepeveen Wed Mar 28, 2012 9:37 pm
                                                                                          Re: When does a cut-node became an all-node? Ed Schroder Thu Mar 29, 2012 3:22 pm
                                                                        Re: When does a cut-node became an all-node? Vincent Diepeveen Wed Mar 28, 2012 8:56 pm
                                                                              Re: When does a cut-node became an all-node? Larry Kaufman Wed Mar 28, 2012 9:26 pm
                                                                                    Re: When does a cut-node became an all-node? Vincent Diepeveen Wed Mar 28, 2012 9:59 pm
                                                                                          Re: When does a cut-node became an all-node? Vincent Diepeveen Wed Mar 28, 2012 10:02 pm
                                                                                          Re: When does a cut-node became an all-node? Larry Kaufman Wed Mar 28, 2012 10:46 pm
                                                      Re: When does a cut-node became an all-node? Ricardo Barreira Wed Mar 28, 2012 8:57 pm
                                                            Re: When does a cut-node became an all-node? Vincent Diepeveen Wed Mar 28, 2012 9:22 pm
                                                                  Re: When does a cut-node became an all-node? Ricardo Barreira Thu Mar 29, 2012 9:38 am
                                                                        Re: When does a cut-node became an all-node? Vincent Diepeveen Thu Mar 29, 2012 9:45 am
                              Re: When does a cut-node became an all-node? Marco Costalba Tue Mar 27, 2012 6:37 pm
            Re: When does a cut-node became an all-node? Robert Hyatt Tue Mar 27, 2012 5:19 pm
                  Re: When does a cut-node became an all-node? Vincent Diepeveen Tue Mar 27, 2012 5:35 pm
            Re: When does a cut-node became an all-node? Steve Maughan Tue Mar 27, 2012 5:59 pm
      Re: When does a cut-node became an all-node? Robert Hyatt Tue Mar 27, 2012 5:12 pm
            Re: When does a cut-node became an all-node? Alcides Schulz Tue Mar 27, 2012 5:41 pm
                  Re: When does a cut-node became an all-node? Robert Hyatt Wed Mar 28, 2012 10:01 pm
                        Re: When does a cut-node became an all-node? Larry Kaufman Wed Mar 28, 2012 10:31 pm
                              Re: When does a cut-node became an all-node? Daniel Shawul Thu Mar 29, 2012 12:28 am
                                    Re: When does a cut-node became an all-node? Larry Kaufman Thu Mar 29, 2012 1:51 am
                                          Re: When does a cut-node became an all-node? Sam Hamilton Thu Mar 29, 2012 2:05 am
                                                Re: When does a cut-node became an all-node? Larry Kaufman Thu Mar 29, 2012 2:37 am
                                                      Re: When does a cut-node became an all-node? Sam Hamilton Thu Mar 29, 2012 2:56 am
                                                Re: When does a cut-node became an all-node? Vincent Diepeveen Thu Mar 29, 2012 9:36 am
                                                      Re: When does a cut-node became an all-node? Ed Schroder Thu Mar 29, 2012 4:01 pm
                                          Re: When does a cut-node became an all-node? Daniel Shawul Thu Mar 29, 2012 10:53 am
                                                Re: When does a cut-node became an all-node? Larry Kaufman Thu Mar 29, 2012 2:24 pm
                                                      Re: When does a cut-node became an all-node? Daniel Shawul Thu Mar 29, 2012 4:04 pm
                                                            Re: When does a cut-node became an all-node? Daniel Shawul Thu Mar 29, 2012 4:27 pm
                                                                  Re: When does a cut-node became an all-node? Larry Kaufman Thu Mar 29, 2012 5:49 pm
                                                                        Re: When does a cut-node became an all-node? Daniel Shawul Thu Mar 29, 2012 7:18 pm
                                                            Re: When does a cut-node became an all-node? Larry Kaufman Thu Mar 29, 2012 4:28 pm
                                                                  Re: When does a cut-node became an all-node? Daniel Shawul Thu Mar 29, 2012 4:52 pm
                                                                        Re: When does a cut-node became an all-node? Larry Kaufman Thu Mar 29, 2012 5:58 pm
                                                                              Re: When does a cut-node became an all-node? Daniel Shawul Thu Mar 29, 2012 7:13 pm
                                                                                    Re: When does a cut-node became an all-node? Karlo Bala Jr. Thu Mar 29, 2012 8:39 pm
                                                                                          Re: When does a cut-node became an all-node? Daniel Shawul Thu Mar 29, 2012 9:02 pm
                                                                                          Re: When does a cut-node became an all-node? Karlo Bala Jr. Thu Mar 29, 2012 9:23 pm
                                                                                          Re: When does a cut-node became an all-node? Daniel Shawul Thu Mar 29, 2012 9:45 pm
                                                                                          Re: When does a cut-node became an all-node? Vincent Diepeveen Fri Mar 30, 2012 12:26 am
                              Re: When does a cut-node became an all-node? Robert Hyatt Thu Mar 29, 2012 8:34 pm
                        Re: When does a cut-node became an all-node? Alcides Schulz Thu Mar 29, 2012 3:05 am
                        Re: When does a cut-node became an all-node? Thomas Petzke Thu Mar 29, 2012 6:53 am
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