The New Sudoku Players' Forum

[ohanian]

Solve this.

1 0 0 | 0 0 0 | 0 0 0
0 2 0 | 0 0 0 | 0 0 0
0 0 3 | 0 0 0 | 0 0 0
----------------------
0 0 0 | 4 0 0 | 0 0 0
0 0 0 | 0 5 0 | 0 0 0
0 0 0 | 0 0 6 | 0 0 0
----------------------
0 0 0 | 0 0 0 | 7 0 0
0 0 0 | 0 0 0 | 0 8 0
0 0 0 | 0 0 0 | 0 0 9

[Sped]

Code: Select all

 
 *-----------*
 |1..|...|...|
 |.2.|...|...|
 |..3|...|...|
 |---+---+---|
 |...|4..|...|
 |...|.5.|...|
 |...|..6|...|
 |---+---+---|
 |...|...|7..|
 |...|...|.8.|
 |...|...|..9|
 *-----------*


 *-----------*
 |145|732|698|
 |829|645|371|
 |673|198|425|
 |---+---+---|
 |362|481|957|
 |781|953|264|
 |594|276|813|
 |---+---+---|
 |238|519|746|
 |957|364|182|
 |416|827|539|
 *-----------*


It's not a valid sudoku because it has multiple solutions. I have shown one solution. I think it's been shown that a sudoku with less than 17 starting clues cannot be valid.