HoDoKu Solving Technique Index: Example for "Avoidable Rectangle Type 1"

Solving Technique Example

Original sudoku:

.86.4....2........1...76.9....4.7...8...9......9683.7....752..8.......457..3..1..

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

:0607:3:.86.4...+72+9+7.+3.+4.+61...76+89....4+27+9+8.8+7..9..+6+4+4.9683+57.+9..752+6+38....+1.+7457+5+83+6+41+2+9:333 341 343 153 553 382:357:

The following representation can be pasted in most Sudoku programs:

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

| 35  8    6  | 1259  4  159 | 23  15  7  |

| 2   9    7  | 158   3  158 | 4   15  6  |

| 1   34   45 | 25    7  6   | 8   9   23 |

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

| 56  136  15 | 4     2  7   | 9   8   13 |

| 8   7    23 | 15    9  15  | 23  6   4  |

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

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

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

| 36  26   23 | 89    1  89  | 7   4   5  |

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

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

Representation of the step:

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

| 35  8    6  | 1259  4  159 |  23    15  7  |

| 2   9    7  | 158   3  158 |  4     15  6  |

| 1   34   45 | 25    7  6   |  8     9   23 |

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

| 56  136  15 | 4     2  7   |  9     8   13 |

| 8   7    23 | 15    9  15  | *2-3  *6   4  |

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

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

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

| 36  26   23 | 89    1  89  |  7     4   5  |

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

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



Avoidable Rectangle Type 1: 6/3 in r5c78,r7c78 => r5c7<>3