Simple Sudoku Helper

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

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]5689 [5]45679 [6]456789 [3]489 [5]34589 [5]34589 [4]4789 bk1 bk2 [4]1589 [5]24579 bk3 bk6 [5]14589 [6]124589 [4]4789 [4]5789 [5]45789 [5]15689 [5]24569 [7]1245689 [5]12489 [6]134589 bk7 [3]489 [5]35689 [6]345689 bk4 bk1 [4]5689 [3]789 bk2 [4]3689 [3]789 [4]5789 [4]5789 [3]689 [3]269 [4]2689 bk5 [6]146789 [5]14689 bk3 [4]2789 [5]14789 bk7 [4]2359 [4]2589 [4]1489 [5]13489 [5]13489 bk6 [4]2589 [5]14589 bk2 bk8 [5]15679 [3]179 [5]15679 [4]1569 [3]179 bk4 [5]13679 [3]169 [4]4679 [5]14679 bk3 [6]146789 [6]124689 bk5 [5]26789 [5]16789 [5]13569 [6]345679 [6]145679 [6]124789 [7]1456789 [7]1245689 [5]12789 [6]236789 [6]136789