HoDoKu Solving Technique Index: Example for "XYZ-Wing"

Solving Technique Example

Original sudoku:

.73.....9514.92.....2.......67.59..28...1.53.............14.9.......835.......1.7

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

:0801:6:+673.+8.+2.9514.92..+3+9+82.....+5+167+359..28.+9.1.53+6..+5+8..+7+9+1..+614.9+2+8..+1..835+4..+8...1+67::635 636:

The following representation can be pasted in most Sudoku programs:

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

| 6    7      3 | 45    8    145   | 2   14   9 |

| 5    1      4 | 67    9    2     | 68  78   3 |

| 9    8      2 | 467   367  13467 | 46  147  5 |

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

| 1    6      7 | 3     5    9     | 48  48   2 |

| 8    24     9 | 247   1    47    | 5   3    6 |

| 234  234    5 | 8     26   46    | 7   9    1 |

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

| 37   35     6 | 1     4    357   | 9   2    8 |

| 27   29     1 | 2679  267  8     | 3   5    4 |

| 234  23459  8 | 259   23   35    | 1   6    7 |

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

Representation of the step:

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

| 6    7      3 |  45    8     145    |  2   14   9 |

| 5    1      4 | *67    9     2      |  68  78   3 |

| 9    8      2 | *467   3-67  134-67 | *46  147  5 |

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

| 1    6      7 |  3     5     9      |  48  48   2 |

| 8    24     9 |  247   1     47     |  5   3    6 |

| 234  234    5 |  8     26    46     |  7   9    1 |

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

| 37   35     6 |  1     4     357    |  9   2    8 |

| 27   29     1 |  2679  267   8      |  3   5    4 |

| 234  23459  8 |  259   23    35     |  1   6    7 |

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



XYZ-Wing: 4/7/6 in r23c4,r3c7 => r3c56<>6