HoDoKu Solving Technique Index: Example for "Sue de Coq (extended variant)"

Solving Technique Example

Original sudoku:

3.9...5.........29.6.....3..3.2...6.7....5.8225.7.4....7.......19.4.3......5..3..

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

:1101:1789:3+29...5.........29.6.....3.+93+42..+76+57+1+6..5+48225+87+64..+3.7+3....+5.19+54.3.+7...+25..3..:677 679 699:115 125 135 136 715 725 735 736 815 825 835 836 974:

The following representation can be pasted in most Sudoku programs:

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

| 3    2   9  | 168   1478     1678  | 5     14   14678 |

| 458  48  17 | 1368  134578   1678  | 168   2    9     |

| 458  6   17 | 189   1245789  12789 | 18    3    1478  |

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

| 9    3   4  | 2     18       18    | 7     6    5     |

| 7    1   6  | 39    39       5     | 4     8    2     |

| 2    5   8  | 7     6        4     | 19    19   3     |

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

| 468  7   3  | 1689  1289     12689 | 1289  5    148   |

| 1    9   5  | 4     28       3     | 268   7    68    |

| 468  48  2  | 5     1789     16789 | 3     149  148   |

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

Representation of the step:

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

| 3    2   9  | B168    -14-7-8     B1678    | 5     14   14678 |

| 458  48  17 | A1368   -1345-7-8   B1678    | 168   2    9     |

| 458  6   17 | A189    -1245-7-89  -12-7-89 | 18    3    1478  |

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

| 9    3   4  |  2       18          18      | 7     6    5     |

| 7    1   6  | C39      39          5       | 4     8    2     |

| 2    5   8  |  7       6           4       | 19    19   3     |

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

| 468  7   3  |  168-9   1289        12689   | 1289  5    148   |

| 1    9   5  |  4       28          3       | 268   7    68    |

| 468  48  2  |  5       1789        16789   | 3     149  148   |

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



Sue de Coq: r23c4 - {13689} (r5c4 - {39}, r1c46,r2c6 - {1678}) => r123c5,r3c6<>1, r123c5,r3c6<>7, r123c5,r3c6<>8, r7c4<>9