HoDoKu Solving Technique Index: Example for "BUG + 1"

Solving Technique Example

Original sudoku:

...............1.73..6.....9..8......2....81..6..24.....8..759...71..32.4..596...

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

:0610:35:+1+4.+7+8...+9+2+8.+4+5.1.73+7.6+1...+89+5+38+7+1..+2+72+4+9+6+581+3+86+1+324+9+7+5+6+18+2+3759+4+5+971+4+832+64+3+2596+7+8+1::318 518:

The following representation can be pasted in most Sudoku programs:

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

| 1  4  56 | 7  8  23 | 26  356  9 |

| 2  8  69 | 4  5  39 | 1   36   7 |

| 3  7  59 | 6  1  29 | 24  45   8 |

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

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

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

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

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

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

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

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

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

Representation of the step:

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

| 1  4  56 | 7  8  23 | 26  -3-56  9 |

| 2  8  69 | 4  5  39 | 1    36    7 |

| 3  7  59 | 6  1  29 | 24   45    8 |

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

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

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

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

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

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

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

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

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



Bivalue Universal Grave + 1 => r1c8<>3, r1c8<>5