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The chess position with the most possible legal moves?
Moderators: hgm, Rebel, chrisw
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- Location: Canada
Re: The chess position with the most possible legal moves?
Terry McCracken
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Re: The chess position with the most possible legal moves?
Here is a link to a 64-bit compile and a new 32-bit compile. The performance seems to be the same as the old one though:
https://drive.google.com/file/d/0B3_wqC ... sp=sharing
This is a very old program with a rather obscure interface, but to get all the statistics run it like this: joined.exe -q -v126 <input file>
It was the beginning of a chess playing program that never got finished though at one point it managed to beat me
Regards
Andreas
https://drive.google.com/file/d/0B3_wqC ... sp=sharing
This is a very old program with a rather obscure interface, but to get all the statistics run it like this: joined.exe -q -v126 <input file>
It was the beginning of a chess playing program that never got finished though at one point it managed to beat me
Regards
Andreas
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- Posts: 6442
- Joined: Tue Jan 09, 2007 12:31 am
- Location: PA USA
- Full name: Louis Zulli
Re: The chess position with the most possible legal moves?
Should be White to move:Brunetti wrote:144 moves, Dr. Jeno Ban, 1960RJN wrote:1) Positions where no promotions have taken place yet (but one is possible on the move, with underpromotions being different moves).
[d]n1r1r1b1/1P1P1P1P/1Q6/3NBNK1/R7/4p1p1/3PBPkP/2R5 b - - 0 1
Alex
[D]n1r1r1b1/1P1P1P1P/1Q6/3NBNK1/R7/4p1p1/3PBPkP/2R5 w - - 0 1
144 is correct, at least according to my new (legal) move generator.
Code: Select all
ProcyonLeo: ~/Documents/Chess/Kirby] ./generator
num_moves = 144.
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- Full name: Alex Brunetti
Re: The chess position with the most possible legal moves?
Actually I didn't know who has the move, my FEN was limited to board, and it seems I didn't look a the position I just wrote a random color to let the forum accept and display it.zullil wrote:Should be White to move [...] 144 is correct, at least according to my new (legal) move generator.
Alex
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- Posts: 6442
- Joined: Tue Jan 09, 2007 12:31 am
- Location: PA USA
- Full name: Louis Zulli
Re: The chess position with the most possible legal moves?
I only noticed when I entered your FEN (also without really looking) and my generator gave 25 moves instead of 144.Brunetti wrote:Actually I didn't know who has the move, my FEN was limited to board, and it seems I didn't look a the position I just wrote a random color to let the forum accept and display it.zullil wrote:Should be White to move [...] 144 is correct, at least according to my new (legal) move generator.
Alex