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

Solving Technique Example

Original sudoku:

..4....9765.....2191...73.42.1.3....5.32.6...............6........1746..7...9..1.

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

:1101:35789:+3+24+8+6+1+59765+7+9+4+3+82191+8+5+273+642.1+43....5.32.6...+4..+7.....+1..6.....+8..1746..7..+39..1.::378 578 757 758 849 858 869 949 957 967 969:

The following representation can be pasted in most Sudoku programs:

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

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

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

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

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

| 2  6789  1   | 4  3    589 | 79    578    5689   |

| 5  789   3   | 2  18   6   | 1479  478    89     |

| 4  689   69  | 7  158  589 | 129   358    235689 |

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

| 1  349   259 | 6  58   258 | 2479  34578  23589  |

| 8  39    259 | 1  7    4   | 6     35     2359   |

| 7  46    256 | 3  9    258 | 24    1      258    |

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

Representation of the step:

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

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

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

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

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

| 2  6789  1   | 4  3    589 | B79      A578      56-8-9   |

| 5  789   3   | 2  18   6   |  14-7-9   4-7-8   B89       |

| 4  689   69  | 7  158  589 |  12-9    A358      2356-8-9 |

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

| 1  349   259 | 6  58   258 |  2479    -34-578   23589    |

| 8  39    259 | 1  7    4   |  6       C35       2359     |

| 7  46    256 | 3  9    258 |  24       1        258      |

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



Sue de Coq: r46c8 - {3578} (r8c8 - {35}, r4c7,r5c9 - {789}) => r7c8<>3, r7c8<>5, r5c78<>7, r46c9,r5c8<>8, r46c9,r56c7<>9