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

Solving Technique Example

Original sudoku:

..7.65....1...84364...........6....3..4.2...1....4.2....1.....7.....2...53..7.91.

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

:0707s:6789:+3.7+465+1..+21+5+7+984364..+2........6+8..+43..4.2...1..+3.4.2....1.....7.....2...53.+87.91.:954 964 574 376 976 584:682 782 882 982:

The following representation can be pasted in most Sudoku programs:

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

| 3      89     7   | 4    6    5   | 1     289    289 |

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

| 4      689    689 | 2    13   13  | 578   5789   589 |

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

| 179    2579   29  | 6    8    179 | 57    4      3   |

| 6789   56789  4   | 35   2    379 | 5678  56789  1   |

| 16789  56789  3   | 15   4    179 | 2     56789  589 |

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

| 689    24689  1   | 39   35   46  | 3568  2568   7   |

| 6789   46789  689 | 139  135  2   | 3568  568    458 |

| 5      3      26  | 8    7    46  | 9     1      24  |

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

Representation of the step:

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

| 3       89          7   | 4    6    5   | 1     289     289 |

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

| 4       689         689 | 2    13   13  | 578   5789    589 |

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

| 179     2579        29  | 6    8    179 | 57    4       3   |

| 6789    56789       4   | 35   2    379 | 5678  56789   1   |

| 16789   56789       3   | 15   4    179 | 2     56789   589 |

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

| 689    *24689       1   | 39   35   46  | 3568  2568    7   |

| 6789   *4-6-7-8-9   689 | 139  135  2   | 3568  568    *458 |

| 5       3          *26  | 8    7    46  | 9     1      *24  |

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



Discontinuous Nice Loop r8c2 =4= r8c9 -4- r9c9 -2- r9c3 =2= r7c2 =4= r8c2 => r8c2<>6, r8c2<>7, r8c2<>8, r8c2<>9