HoDoKu Solving Technique Index: Example for "Unique Rectangle Type 5"

Solving Technique Example

Original sudoku:

75..8...12.96.3.8...8...9.......437.....2.....938.......5...2...8.2.57.34...3..59

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

:0604:1:75.+98+2.+312.96.3+58+7..8.+5+79..+8..+5+9437+6+6..+32+1+8+9+5+5938+7+6.....5..+92.+8+98.2.57.34...3+8.59:132 438 468 172 175 188 192 193:174:

The following representation can be pasted in most Sudoku programs:

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

| 7   5    46  | 9    8    2 | 46  3    1  |

| 2   14   9   | 6    14   3 | 5   8    7  |

| 13  346  8   | 14   5    7 | 9   26   24 |

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

| 8   12   12  | 5    9    4 | 3   7    6  |

| 6   47   47  | 3    2    1 | 8   9    5  |

| 5   9    3   | 8    7    6 | 14  12   24 |

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

| 13  367  5   | 147  46   9 | 2   146  8  |

| 9   8    16  | 2    146  5 | 7   46   3  |

| 4   267  267 | 17   3    8 | 16  5    9  |

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

Representation of the step:

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

| 7   5    46  |  9     8    2 | 46   3    1  |

| 2   14   9   |  6     14   3 | 5    8    7  |

| 13  346  8   |  14    5    7 | 9    26   24 |

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

| 8   12   12  |  5     9    4 | 3    7    6  |

| 6   47   47  |  3     2    1 | 8    9    5  |

| 5   9    3   |  8     7    6 | 14   12   24 |

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

| 13  367  5   | -147  *46   9 | 2   *146  8  |

| 9   8    16  |  2    *146  5 | 7   *46   3  |

| 4   267  267 |  17    3    8 | 16   5    9  |

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



Uniqueness Test 5: 4/6 in r7c58,r8c58 => r7c4<>1