HoDoKu Solving Technique Index: Example for "Naked Single"

Solving Technique Example

Original sudoku:

.1.9..74....8....3.7..2.69...4.3.2.....6.2.....8.1.3...81.7..3.3....8....69..3.2.

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

:0003::.1.9..74....8....3.7.+32.69...4.3.2.....6.2.....8.1.3...81.7..3.3....8....69..3.2.:::

The following representation can be pasted in most Sudoku programs:

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

| 2568   1     2356 | 9     56    56    | 7      4      258    |

| 24569  2459  256  | 8     456   14567 | 15     15     3      |

| 458    7     5    | 3     2     145   | 6      9      158    |

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

| 15679  59    4    | 57    3     579   | 2      15678  156789 |

| 1579   359   357  | 6     4589  2     | 14589  1578   145789 |

| 25679  259   8    | 457   1     4579  | 3      567    45679  |

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

| 245    8     1    | 245   7     4569  | 459    3      4569   |

| 3      245   257  | 1245  4569  8     | 1459   1567   145679 |

| 457    6     9    | 145   45    3     | 1458   2      14578  |

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

Representation of the step:

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

| 2568   1      2356 | 9     56    56    | 7      4      258    |

| 24569  2459   256  | 8     456   14567 | 15     15     3      |

| 458    7     *5    | 3     2     145   | 6      9      158    |

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

| 15679  59     4    | 57    3     579   | 2      15678  156789 |

| 1579   359    357  | 6     4589  2     | 14589  1578   145789 |

| 25679  259    8    | 457   1     4579  | 3      567    45679  |

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

| 245    8      1    | 245   7     4569  | 459    3      4569   |

| 3      245    257  | 1245  4569  8     | 1459   1567   145679 |

| 457    6      9    | 145   45    3     | 1458   2      14578  |

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



Naked Single: r3c3=5