## Complete the borders ...

For fans of Killer Sudoku, Samurai Sudoku and other variants

### Complete the borders ...

Complete the borders to make this a jigsaw sudoku solution ...

Is the completion unique if 180-degree rotational symmetry is not required?
r.e.s.

Posts: 337
Joined: 31 August 2005

Is wrap-around allowed (toroidal, cylindrical, Moebius strippial, etc)?

Bill Smythe
Smythe Dakota

Posts: 564
Joined: 11 February 2006

Smythe Dakota wrote:Is wrap-around allowed (toroidal, cylindrical, Moebius strippial, etc)

No, it's supposed to be "standard" jigsaw sudoku. That solid black line around the 9x9 is part of the given borders.
r.e.s.

Posts: 337
Joined: 31 August 2005

### Re: Complete the borders ...

r.e.s. wrote:Is the completion unique if 180-degree rotational symmetry is not required?

Even if symmetry is required, there are at least 2 solutions...

Solution 1

Solution 2

Don't know which one will produce a harder puzzle though...
udosuk

Posts: 2698
Joined: 17 July 2005