max number of pseudo legal move
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max number of pseudo legal move
is there a worst position than this one
[d] 3Q4/1Q4Q1/4Q3/2Q4R/Q4Q2/3Q4/1Q4Rp/1K1BBNNk w - - 0 1
218 pseudo legal moves ?
[d] 3Q4/1Q4Q1/4Q3/2Q4R/Q4Q2/3Q4/1Q4Rp/1K1BBNNk w - - 0 1
218 pseudo legal moves ?
Vivien Clauzon
Weini
https://github.com/tryingsomestuff/Weini
Minic
https://github.com/tryingsomestuff/Minic
Weini
https://github.com/tryingsomestuff/Weini
Minic
https://github.com/tryingsomestuff/Minic
Re: max number of pseudo legal move
I have this comment in chess source:
// max width found so far in testing is 100
#define MAXWIDTH_FULLMOVELIST 128
that would have been counting every pseudo_move_generator count in search, saving the largest, and leaving it overnight or something. I forget.
Re: max number of pseudo legal move
Based on my original message, you are taking some risks ...
Vivien Clauzon
Weini
https://github.com/tryingsomestuff/Weini
Minic
https://github.com/tryingsomestuff/Minic
Weini
https://github.com/tryingsomestuff/Weini
Minic
https://github.com/tryingsomestuff/Minic
Re: max number of pseudo legal move
Is that position even reachable from the start?
Re: max number of pseudo legal move
That's a good question ! Do we have "solvers" for this kind of thing ?
Vivien Clauzon
Weini
https://github.com/tryingsomestuff/Weini
Minic
https://github.com/tryingsomestuff/Minic
Weini
https://github.com/tryingsomestuff/Weini
Minic
https://github.com/tryingsomestuff/Minic
- Roland Chastain
- Posts: 447
- Joined: Sat Jun 08, 2013 8:07 am
- Location: France
- Full name: Roland Chastain
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Re: max number of pseudo legal move
I have never used it, but if I understand correctly it's the kind of thing that Natch can do.
Qui trop embrasse mal étreint.
Re: max number of pseudo legal move
Even so, the proof game for a position like this would be hundreds of moves and almost certainly beyond the capabilities of a brute force search.
Re: max number of pseudo legal move
Reachable or not this is 218 moves. But is Minic, I used to set max moves to 512 ... why not 256 ? I cannot remember ...
Vivien Clauzon
Weini
https://github.com/tryingsomestuff/Weini
Minic
https://github.com/tryingsomestuff/Minic
Weini
https://github.com/tryingsomestuff/Weini
Minic
https://github.com/tryingsomestuff/Minic
-
- Posts: 927
- Joined: Tue Mar 09, 2010 2:46 pm
- Location: New York
- Full name: Álvaro Begué (RuyDos)
Re: max number of pseudo legal move
This is not even hard. I have no experience constructing proof games, and I succeeded after a few minutes:
Re: max number of pseudo legal move
Great, so 256 is needed. Why did i use 512 before? Still a mistery...AlvaroBegue wrote: ↑Sun Jun 09, 2019 8:14 pmThis is not even hard. I have no experience constructing proof games, and I succeeded after a few minutes:
Vivien Clauzon
Weini
https://github.com/tryingsomestuff/Weini
Minic
https://github.com/tryingsomestuff/Minic
Weini
https://github.com/tryingsomestuff/Weini
Minic
https://github.com/tryingsomestuff/Minic