Simple Sudoku Helper

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

[5]35789 [5]35689 [6]356789 [4]3478 [4]3467 [4]3468 [4]6789 bk1 bk2 [5]13789 bk4 [6]236789 [4]2378 bk5 [5]12368 [4]6789 [5]36789 [5]36789 [5]13578 [6]123568 [6]235678 [5]23478 [6]123467 bk9 [3]678 [5]34678 [6]345678 [5]13589 bk7 [5]23589 bk6 [3]239 [4]2358 bk4 [4]2389 [4]1389 [5]34589 [6]235689 [7]2345689 bk1 [5]23479 [5]23458 [5]26789 [6]236789 [5]36789 [5]13489 [6]123689 [6]234689 [6]234789 [5]23479 [4]2348 [6]126789 bk5 [6]136789 [3]349 [2]39 [3]349 [4]2349 bk8 bk7 bk5 [4]2469 [4]1469 bk6 [3]589 bk1 [4]2459 [3]249 [3]245 bk3 [5]24789 [4]4789 bk2 [4]3589 [6]345789 [4]3459 [5]13469 [5]13456 [5]16789 [5]46789 [6]146789