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

Solving Technique Example

Original sudoku:

82..6.....6.8...2...32..568641...37.53......4.87...6..4563.97..37...1.......5..3.

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

:1101:1289:82..6.....6.8...2...32..568641...37.53......4.87...6..4563.97..37...1.......5..3.:913 414 416 119 919 923 425 426 129 929 855 856 197 199:157 289 299 888 957:

The following representation can be pasted in most Sudoku programs:

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

| 8    2   45  | 1579  6      357   | 149   149   37   |

| 179  6   45  | 8     1379   357   | 149   2     37   |

| 179  19  3   | 2     1479   47    | 5     6     8    |

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

| 6    4   1   | 59    289    258   | 3     7     259  |

| 5    3   29  | 1679  1279   267   | 1289  189   4    |

| 29   8   7   | 1459  12349  2345  | 6     159   1259 |

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

| 4    5   6   | 3     28     9     | 7     18    12   |

| 3    7   289 | 46    248    1     | 2489  4589  2569 |

| 129  19  289 | 467   5      24678 | 2489  3     269  |

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

Representation of the step:

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

| 8    2   45  | 1579  6      357   | C149     149     37   |

| 179  6   45  | 8     1379   357   | C149     2       37   |

| 179  19  3   | 2     1479   47    |  5       6       8    |

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

| 6    4   1   | 59    289    258   |  3       7       259  |

| 5    3   29  | 1679  1279   267   | -128-9   189     4    |

| 29   8   7   | 1459  12349  2345  |  6       159     1259 |

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

| 4    5   6   | 3     28     9     |  7      B18     B12   |

| 3    7   289 | 46    248    1     | A2489    45-89  -2569 |

| 129  19  289 | 467   5      24678 | A2489    3      -269  |

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



Sue de Coq: r89c7 - {2489} (r12c7 - {149}, r7c89 - {128}) => r5c7<>1, r89c9<>2, r8c8<>8, r5c7<>9