HoDoKu Solving Technique Index: Example for "Hidden Triple"

Solving Technique Example

Original sudoku:

5..62..37..489........5....93........2....6.57.......3.....9.........7..68.57...2

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

:0211:13478:5..62..37..489........5....93........2....6.57.......3.....9.........7..68.57...2::146 166 186 386 446 466 486 746 846 866 886:

The following representation can be pasted in most Sudoku programs:

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

| 5     19    189     | 6      2      14      | 1489   3       7     |

| 123   167   4       | 8      9      137     | 125    1256    16    |

| 1238  1679  1236789 | 1347   5      1347    | 12489  124689  14689 |

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

| 9     3     1568    | 1247   1468   1245678 | 1248   12478   148   |

| 148   2     18      | 13479  1348   13478   | 6      14789   5     |

| 7     1456  1568    | 1249   1468   124568  | 12489  12489   3     |

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

| 1234  1457  12357   | 1234   13468  9       | 13458  14568   1468  |

| 1234  1459  12359   | 1234   13468  123468  | 7      145689  14689 |

| 6     8     139     | 5      7      134     | 1349   149     2     |

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

Representation of the step:

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

| 5     19    189     | 6      2       14          | 1489   3       7     |

| 123   167   4       | 8      9       137         | 125    1256    16    |

| 1238  1679  1236789 | 1347   5       1347        | 12489  124689  14689 |

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

| 9     3     1568    | 1247   1468   *-12-456-7-8 | 1248   12478   148   |

| 148   2     18      | 13479  1348    13478       | 6      14789   5     |

| 7     1456  1568    | 1249   1468   *-12-456-8   | 12489  12489   3     |

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

| 1234  1457  12357   | 1234   13468   9           | 13458  14568   1468  |

| 1234  1459  12359   | 1234   13468  *-12-3-46-8  | 7      145689  14689 |

| 6     8     139     | 5      7       134         | 1349   149     2     |

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



Hidden Triple: 2,5,6 in r468c6 => r468c6<>1, r8c6<>3, r468c6<>4, r4c6<>7, r468c6<>8