HoDoKu Solving Technique Index: Example for "Naked Single"

Solving Technique Example

Original sudoku:

4.27.6...........656..1..7.....5.21.1.......8.87.9.....3..7..658...........9.84.1

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

:0003::4+127+36+5+8+9......+1.656+8.1.+37....+85.21.1.......8.87.9.....3..7.+8658...........9.84.1:653 558 661 582 782 982 583 983::

The following representation can be pasted in most Sudoku programs:

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

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

| 379  79    39   | 245     248  2459  | 1    24   6   |

| 5    6     8    | 24      1    249   | 3    7    24  |

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

| 369  49    3469 | 8       5    347   | 2    1    347 |

| 1    2459  3459 | 2346    246  2347  | 679  349  8   |

| 23   8     7    | 12346   9    1234  | 6    345  34  |

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

| 29   3     149  | 124     7    124   | 8    6    5   |

| 8    24    146  | 123456  246  12345 | 79   239  237 |

| 267  257   56   | 9       26   8     | 4    23   1   |

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

Representation of the step:

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

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

| 379  79    39   | 245     248  2459  |  1    24   6   |

| 5    6     8    | 24      1    249   |  3    7    24  |

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

| 369  49    3469 | 8       5    347   |  2    1    347 |

| 1    2459  3459 | 2346    246  2347  |  679  349  8   |

| 23   8     7    | 12346   9    1234  | *6    345  34  |

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

| 29   3     149  | 124     7    124   |  8    6    5   |

| 8    24    146  | 123456  246  12345 |  79   239  237 |

| 267  257   56   | 9       26   8     |  4    23   1   |

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



Naked Single: r6c7=6