Thread: Solving sudoku with python

i have been trying solve standard sudoku puzzle python script.
however, unable solve puzzle. based on recursive algorithm , not bruteforce.
know gets passed inserting 2 legal numbers grid, after second level of recursion, returns false main.

appreciated, don't know problem be.

islegal function checks row, column, , 3x3 box duplicate of trialvalue.
getemptycell function searches grid next null cell.
isfull function checks grid see if finished.

edit: section in red 1 of problems. subtracting until found familiar number.
now, i've created dictionary make sure right 3x3 square.
however, still fails complete.

code:

none

code revision , bump. added dictionary check whether i'm checking right 3x3 box.
also, i'm going bump thread when goes off front page.
haven't gotten answers number of previous threads.

changes in blue.

code:

none

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