The New Sudoku Players' Forum

[cardinal]

my Java Applet.

Generates random puzzles, and solves ANY puzzle. It is also very fast at solving.
you can use also Java Console to export the puzzles in CSV format.

the puzzles are also minimal, if you remove any clue, it' is not a valid sudoku anymore

http://www.geocities.com/poarca/applets/sudoku/applfft.html

[Bob Hanson]

nice! -- a few questions:

Are you planning to make this opensource? (For example, at SourceForge.net?)

The hint looks more like a "step" to me -- perhaps it should be labeled that way?

This could be quite valuable if a JavaScript interface were included. So one could, for example, have it on a site of one's own, load it, run it, checking its state, etc. What do you think about that?

Any prospect of introducing marks?

Can you outline the strategy involved?

Is there any correlation between what the hints produce and what a human would do?

[cardinal]

sorry i'm late.

my ambition was to make it absolutely random.


so, the 'Hint' step is random, also
I simply solve the puzzle, and reveal one more clue randomly picked


being random, is not a logically 'next', if you try the same puzzle, you will get differents hints

[cardinal]

i dont' know java scripting
it is open source, just download the .java source and you can use the solver engine it in your JAVA code :


#instantiate a 'sudoku' object ; you can do it only once

mysudoku=new sudoku();

repeat the following :
#call clear_clues() to clear table

mysudoku.clear_clues();

#put clues one by one

mysudoku.put_clue_friendly(row,col,value); // 1..9 1..9 1..9

#call solver

mysudoku.solv();

#get status and solution one by one


status=mysudoku.get_status();

1 = multiple 2 = single 3 = none

value=mysudoku.get_solution_friendly(row,col); // 1..9 1..9 return 1..9

Good Luck !

[cardinal]

finally I added also mine a posibility of choosing the difficulty

simply put, a easy one is a puzzle that can be solved only with naked/hidden singles/doubles, and line box interactions (generates likeable playable puzzles)

a hard one, is the opposite of easy (generates miserable ugly ones )


still they are random, so i keep creating them indefinitely until one satisfies condition