HoDoKu Solving Technique Index: Example for "Turbot Fish"

Solving Technique Example

Original sudoku:

9....5.....149.2.6.64..35..3..7.18......6..3......9..4.2....46.48...............2

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

:0403:8:9+7.+6.5.+4.+5+3149.2.6.64..35..3.+67+418+2..+4..6+2.3......9+6.4.2....46.48...+6...+6....+4..2::828:

The following representation can be pasted in most Sudoku programs:

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

| 9     7    28   | 6      128    5  | 13    4      138    |

| 5     3    1    | 4      9      78 | 2     78     6      |

| 28    6    4    | 128    1278   3  | 5     1789   1789   |

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

| 3     59   6    | 7      4      1  | 8     2      59     |

| 178   4    5789 | 58     6      2  | 179   3      1579   |

| 1278  15   2578 | 358    358    9  | 6     157    4      |

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

| 17    2    3579 | 13589  13578  78 | 4     6      135789 |

| 4     8    3579 | 12359  12357  6  | 1379  1579   13579  |

| 6     159  3579 | 13589  13578  4  | 1379  15789  2      |

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

Representation of the step:

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

| 9     7    28   | 6      128     5  | 13     4       138    |

| 5     3    1    | 4      9      *78 | 2      7-8     6      |

| 28    6    4    | 128    1278    3  | 5      1789    1789   |

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

| 3     59   6    | 7      4       1  | 8      2       59     |

| 178   4    5789 | 58     6       2  | 179    3       1579   |

| 1278  15   2578 | 358    358     9  | 6      157     4      |

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

| 17    2    3579 | 13589  13578  *78 | 4      6      *135789 |

| 4     8    3579 | 12359  12357   6  | 1379   1579    13579  |

| 6     159  3579 | 13589  13578   4  | 1379  *15789   2      |

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



Turbot Fish r2c6 =8= r7c6 -8- r7c9 =8= r9c8 => r2c8<>8