HoDoKu Solving Technique Index: Example for "Kraken Fish Type 2 (Chain 2)"

Solving Technique Example

Original sudoku:

..........3..7.8.98....315.9.8142............5..6...4.1.42........7....6.8...531.

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

:0370:7:...+8......3+1+57.8.98....315.9.8142......+3+5....5.+36...4.1.42+3....+3..7....6.8...531.:211 412 612 712 213 613 713 416 916 933 572 982 986 587 987:759:

The following representation can be pasted in most Sudoku programs:

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

| 467   259    59   | 8   1269  16  | 2467  2367   2347 |

| 246   3      1    | 5   7     46  | 8     26     9    |

| 8     24679  267  | 49  269   3   | 1     5      247  |

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

| 9     67     8    | 1   4     2   | 567   367    357  |

| 2467  12467  267  | 3   5     789 | 2679  26789  1278 |

| 5     127    3    | 6   89    789 | 279   4      1278 |

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

| 1     679    4    | 2   3     689 | 579   789    578  |

| 3     25     259  | 7   189   148 | 24    289    6    |

| 267   8      2679 | 49  69    5   | 3     1      247  |

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

Representation of the step:

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

| *467    259    59   | 8   1269  16  | *2467   2367   *2347  |

|  246    3      1    | 5   7     46  |  8      26      9     |

|  8      24679  267  | 49  269   3   |  1      5      B247   |

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

|  9      67     8    | 1   4     2   | A567   A367    A357   |

| *2467  *12467  267  | 3   5     789 | A2679   26789  *12-78 |

|  5      127    3    | 6   89    789 | A279    4       1278  |

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

|  1      679    4    | 2   3     689 |  579    789     578   |

|  3      25     259  | 7   189   148 | *24     289     6     |

|  267    8      2679 | 49  69    5   |  3      1      B247   |

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



Kraken Fish Type 2:  => r5c9<>7

  Sashimi X-Wing: 4 r15 c12 fr1c7 fr1c9

  r1c7 -4- r8c7 -2- ALS:r4c789,r56c7 -7- r5c9

  r1c9 -4- ALS:r39c9 -7- r5c9

  r5c2 =1= r5c9