HoDoKu Solving Technique Index: Example for "Grouped Discontinuous Nice Loop (set cell)"

Solving Technique Example

Original sudoku:

4....3.....8......16..94............7...519645.12....8.5....4.......2.9531..4.6..

Use the following line if you want to load the sudoku in HoDoKu:

:0710:689:4....3.....8....+4.16..94......+4.....7...519645+412+6+9..8.5....4....+4..2.9531..4.6..:119 219 719 129 229 329 729 241 242 243 347 747 348 748 349 749:671 871 971:

The following representation can be pasted in most Sudoku programs:

.------------------.-------------------.--------------------.

| 4     279   2579 | 15678   1278  3   | 12578  12578  69   |

| 29    2379  8    | 1567    127   567 | 12357  4      69   |

| 1     6     2357 | 578     9     4   | 23578  23578  237  |

:------------------+-------------------+--------------------:

| 689   389   369  | 4       378   78  | 125    125    12   |

| 7     238   23   | 38      5     1   | 9      6      4    |

| 5     4     1    | 2       6     9   | 37     37     8    |

:------------------+-------------------+--------------------:

| 2689  5     2679 | 136789  1378  678 | 4      12378  1237 |

| 68    78    4    | 13678   1378  2   | 1378   9      5    |

| 3     1     279  | 5789    4     578 | 6      278    27   |

'------------------'-------------------'--------------------'

Representation of the step:

.-----------------------.---------------------.--------------------.

|  4        279    2579 | *15678   *1278  3   | 12578  12578  69   |

| *29       2379   8    |  1567    *127   567 | 12357  4      69   |

|  1        6      2357 | *578      9     4   | 23578  23578  237  |

:-----------------------+---------------------+--------------------:

|  689      389    369  |  4        378   78  | 125    125    12   |

|  7        238   *23   | *38       5     1   | 9      6      4    |

|  5        4      1    |  2        6     9   | 37     37     8    |

:-----------------------+---------------------+--------------------:

| *2-6-8-9  5     *2679 |  136789   1378  678 | 4      12378  1237 |

|  68       78     4    |  13678    1378  2   | 1378   9      5    |

|  3        1     *279  |  5789     4     578 | 6      278    27   |

'-----------------------'---------------------'--------------------'



Grouped Discontinuous Nice Loop r7c1 =2= r2c1 -2- r2c5 =2= r1c5 =8= r13c4 -8- r5c4 -3- r5c3 -2- r79c3 =2= r7c1 => r7c1<>6, r7c1<>8, r7c1<>9