HoDoKu Solving Technique Index: Example for "Remote Pair"

Solving Technique Example

Original sudoku:

1.8....5...4...6.72....3......5...4.6......9....91.7....73.........75.6.38.4.6..5

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

:0703:28:1+78+6.+9.5.+9+34+1+5.6.72+5+6+7.3.+1.+7+9+35+6..4+16+4+1.+3+7+59.+8+2+591+47+3+6+5+673.+1...+4+1..75.6.38.4.6+1+75::217 275 279 287 289 837 875 879 887 889:

The following representation can be pasted in most Sudoku programs:

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

| 1  7  8  | 6   24   9  | 234   5   234  |

| 9  3  4  | 1   5    28 | 6     28  7    |

| 2  5  6  | 7   48   3  | 489   1   489  |

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

| 7  9  3  | 5   6    28 | 28    4   1    |

| 6  4  1  | 28  3    7  | 5     9   28   |

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

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

| 5  6  7  | 3   289  1  | 2489  28  2489 |

| 4  1  29 | 28  7    5  | 2389  6   2389 |

| 3  8  29 | 4   29   6  | 1     7   5    |

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

Representation of the step:

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

| 1  7  8  |  6    24     9  | -234     5    234   |

| 9  3  4  |  1    5     *28 |  6      *28   7     |

| 2  5  6  |  7    48     3  |  4-89    1    489   |

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

| 7  9  3  |  5    6     *28 | *28      4    1     |

| 6  4  1  | *28   3      7  |  5       9   *28    |

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

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

| 5  6  7  |  3   -2-89   1  |  2489   *28  -24-89 |

| 4  1  29 | *28   7      5  | -23-89   6   -23-89 |

| 3  8  29 |  4    29     6  |  1       7    5     |

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



Remote Pair: 2/8 r7c8 -8- r2c8 -2- r2c6 -8- r4c6 -2- r4c7 -8- r5c9 -2- r5c4 -8- r8c4 => r18c7,r7c59,r8c9<>2, r38c7,r7c59,r8c9<>8