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Please help me. This sudoku is untouched.

8.. ... 6..
.29 67. .1.
... .14 .5.

6.. 391 5.2
.51 ... 9..
9.2 ..6 ...

.6. 43. ...
.9. .87 16.
..7 ... ..3

Have a look at R9C4 - you can make some eliminations. Then there's a hidden pair in block 1.

There's a few straightforward eliminations to get to this stage

Code: Select all

81 [45]  [259]  [25]  [235] 6 [23479]  [479]
 [45] 2967 [358]  [348] 1 [48]
 [37]  [37] 6 [289] 14 [28] 5 [89]
6 [478]  [48] 3915 [478] 2
 [37] 51 [278]  [24]  [28] 9 [3478] 6
9 [3478] 2 [578]  [45] 6 [3478]  [3478] 1
16 [58] 43 [259]  [278]  [2789]  [5789]
 [245] 93 [25] 8716 [45]
 [245]  [48] 716 [259]  [248]  [2489] 3



Then there's a nice x-wing in rows 2 and 9.

stuartn

According to the solver at http://www.angusj.com/sudoku/
this puzzle has 6 solutions.

Ahaaa! - but I'm only looking for ONE of them!


let's not start this again......

stuartn

814 523 679
529 678 314
736 914 258

678 391 542
351 742 986
942 856 731

165 439 827
493 287 165
287 165 493

815 923 647
429 675 318
376 814 259

684 391 572
751 248 936
932 756 481

168 432 795
293 587 164
547 169 823

---------


815 923 647
429 675 318
376 814 259

684 391 572
751 248 936
932 756 481

168 439 725
293 587 164
547 162 893

---------


815 923 647
429 675 318
736 814 259

674 391 582
351 248 976
982 756 431

168 432 795
293 587 164
547 169 823

---------


815 923 647
429 675 318
736 814 259

674 391 582
351 248 976
982 756 431

168 439 725
293 587 164
547 162 893

---------


814 952 637
529 673 814
736 814 259

648 391 572
351 728 946
972 546 381

165 439 728
493 287 165
287 165 493

jdevor...very helpful. Thankyou.