HoDoKu Solving Technique Index: Example for "Jellyfish"

Solving Technique Example

Original sudoku:

2.......3.8..3..5...34.21....12.54......9......93.86....25.69...9..2..7.4.......1

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

:0302:7:2.......3.8..3..5...34.21....12.54......9......93.86....25.69...9..2..7.4.......1::712 715 721 729 751 752 759 792 795:r3467 c1259

The following representation can be pasted in most Sudoku programs:

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

| 2      14567   4567  | 16789  15678  179 | 78     4689  3     |

| 1679   8       467   | 1679   3      179 | 27     5     24679 |

| 5679   567     3     | 4      5678   2   | 1      689   6789  |

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

| 3678   367     1     | 2      67     5   | 4      389   789   |

| 35678  234567  45678 | 167    9      147 | 23578  1238  2578  |

| 57     2457    9     | 3      147    8   | 6      12    257   |

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

| 1378   137     2     | 5      1478   6   | 9      348   48    |

| 13568  9       568   | 18     2      134 | 358    7     4568  |

| 4      3567    5678  | 789    78     379 | 2358   2368  1     |

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

Representation of the step:

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

|  2        1456-7   4567  | 16789   156-78  179 | 78     4689   3      |

|  16-79    8        467   | 1679    3       179 | 27     5      246-79 |

| *5679    *567      3     | 4      *5678    2   | 1      689   *6789   |

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

| *3678    *367      1     | 2      *67      5   | 4      389   *789    |

|  356-78   23456-7  45678 | 167     9       147 | 23578  1238   25-78  |

| *57      *2457     9     | 3      *147     8   | 6      12    *257    |

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

| *1378    *137      2     | 5      *1478    6   | 9      348    48     |

|  13568    9        568   | 18      2       134 | 358    7      4568   |

|  4        356-7    5678  | 789    -78      379 | 2358   2368   1      |

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



Jellyfish: 7 r3467 c1259 => r1c25,r2c19,r5c129,r9c25<>7