sudognu

Sudognu is a command line sudoku solver and creator. Sudognu can display the logical steps it uses to find the solution. It can print four sudokus to a pdf page and it comes with example cgi scripts for integration into www sites.

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Create four sudokus and print them to a pdf page
The sudokus will be assigned a difficulty rating from 'easy' to 'fiendish' .
'Easy', 'moderate' and 'hard' sudokus are solvable without guessing.

Explain solution steps for a sudoku
Please enter your sudoku as follows:
81 digits without empty space in between, line by line from top to bottom, empty fields as 0 (zero).
Example sudoku:
000000000000000001002034005000006240070005000800900000001000630009800000035700020

Print four sudokus to a pdf page
The text area below displays a few difficult sudokus with only 17 givens. Select an arbitrary number of sudokus (multiple selection by click and drag, "Control + left click" or "Shift + left click"). By pressing "Create pdf" the selected sudokus will be solved and rated before four of them will be written to a pdf page ready for printing.
000000076060200000000000050000860400501000000700900000030005000900000200000010000 000007400060100000020300000400020000000000001000000050000050260301400000000000800 000020060000000028030000000000400300206000000000007100070300400800000050000100000 000074010300000600800000000200500300000600500070000000040000070000320000001000000 000600304200008000000000100000027050031000000000000000700040020040300600000000000 000704010200000500300000000040000070000820000001000000070400000000050200800000600 020000407100600000000000000600000030300050000000040200048000005000300060000001000 030060045800100060000000007200000300000045000900000000000900100065000000000000000 040000208000031000000000000157000040000200000300000000020800000000070010600000900 050400000000030800000000001300080700060000050000200000000506040108000300000000000 052000600000300080000100000640000500000029000000700000109000030000050400000000000 054000000000070020000010000000400508700000000000600000000803600170000090200000000 086000000000050010000400030500300040070000200000100000000008607300000000000000800 700000100000300000000600000038000000000010200006000050010000460200070000000500030 800000100000300000000700000039000000000010200007000050010000470200080000000600030 900000050000001000000030000230000100040020000000800070408500000000600002000000300

© 2007-2009, Jens Baaran, Germany.