Simple Sudoku Helper

+   +   +     +   +   +     +   1   2   7   +   +     +   6   +     +   +   +   +   +   +     +   +   +     +   5   +     +   8   +     2   +   +     +   +   +   6   +   +     +   +   +     4   +   +   +   +   +     1   +   9     +   +   +     +   1   9     +   +   +     +   +   +   +   +   +     +   3   +     8   +   +   5   +   2     +   +   +     +   +   +

Enter some numbers and press "Update" Cells that contain just a number are completed; the only option provided by the drop-down box is bk (for "back") which will un-set the box. Cells that contain a number in square brackets are currently uncompleted; the number shows how many legal entries there are, and the drop-down box permits the selection of one of those legal entries. Get Another One

[4]3489 [5]34569 [5]34568 [6]345789 [5]45789 [5]34578 [4]3679 bk1 bk2 bk7 [5]23459 [5]13458 [5]34589 bk6 [6]123458 [2]39 [4]3489 [4]3489 [6]123489 [5]23469 [5]13468 [5]34789 [6]124789 [6]123478 [4]3679 bk5 [6]346789 [4]1349 bk8 [5]13457 bk2 [3]457 [5]34567 [6]135679 [4]3679 [6]135679 bk6 [5]23579 [4]1357 [4]3578 [3]578 [4]3578 bk4 [5]23789 [6]135789 [3]234 [5]23457 [4]3457 bk1 [4]4578 bk9 [5]23567 [5]23678 [5]35678 [3]348 bk1 bk9 [5]45678 [5]24578 [6]245678 [5]23567 [5]23467 [5]34567 [1]4 [3]467 [3]467 [5]45679 bk3 [6]124567 bk8 [5]24679 [6]145679 bk5 [4]3467 bk2 [5]46789 [5]14789 [5]14678 [5]13679 [5]34679 [6]134679