The New Sudoku Players' Forum

[Mathimagics]

I am trying to get gsf's sudoku tool to work for automorphism checking (which it does admirably fast!).

This seems to work fine for getting automorphism counts for a batch of grids:

sudoku -f%v%,#%,%#aC GridList.txt

Output:

Code: Select all

123456789546987123897321546231645897465798231978132465312564978654879312789213654 # 54
123456789546987123897321546231645897465798231789213654312564978654879312978132465 # 18
123456789654879312978132465312564978546987123789213654231645897465798231897321546 # 18
...


And this command, according to the documentation, is supposed to just count the grids with automorphism counts > 1:

sudoku -e(%#An)>1 -f- -Ff%#an/%n GridList.txt

But this just displays 0/144 (144 is the number of grids in the file).

Can anyone help me out here?

[Mathimagics]

I found it.

In the expression -e(%#An)^>1 the "%#An" apparently assumes the input file is in compressed ("sudz") format.

I just substituted %#aC, which was used in the first example, and hey, presto!

[Mathimagics]

When I generate sudz files, they look the right size, but when I try to unpack them, or count automorphisms, I get absolutely nothing in response.

This is on Windows, BTW.

Anybody else had this problem?

[eleven]

Hi,

i just retried it with the 64-bit version under linux - no problem.

./sudoku-linux.i386-64 -gb299 -f '%#ec' -o 299.sudz
produced a file with 346952 bytes.

./sudoku-linux.i386-64 -e '(%#An)>1' -f- -Ff'%#an/%n' 299.sudz
wrote out
97/133302

./sudoku-linux.i386-64 -f'%v' 299.sudz > puzzles299.txt
wrote 133302 grids to the file.

You certainly know, that under windows you have to write %% for % in .bat files.

[Mathimagics]

Hi eleven,

I am sorry for the extreme lateness of this response! I got diverted into other problems and totally forgot to check back here for replies.

I know about the %% problem for Win batch files, that's not the problem.

Ok, now I have a Win 10-64 bit rig, perhaps the problem will disappear. But are there Win64 executables of gsf available? Or do I just have to run the 32-bit version?

[tarek]

I would take this opportunity to highlight how helpful gsf’s sudoku was/is/will be to the sudoku community. I hope that it continues to get the recognition it truly deserves!

Tarek

[Mathimagics]

I'll second that! Hats off to gsf ...