15.09.2019, 19:56

16.09.2019, 07:53

Can you please check if 2.8 Odd/Even Stars example has multiple solutions?

I was able to place all the even digits with the rules and now only odd digits are left with many combinations to place.

I was able to place all the even digits with the rules and now only odd digits are left with many combinations to place.

16.09.2019, 10:25

I solved it and got a unique solution.

If you're still convinced that there is a problem: Since you already placed all even digits, you should be able to check it with a solver, since you can't make use of the star properties any more.

If you're still convinced that there is a problem: Since you already placed all even digits, you should be able to check it with a solver, since you can't make use of the star properties any more.

16.09.2019, 10:33

Same problem here, sudokuwiki.org finds lots of solutions for 2.8

16.09.2019, 10:48

Jonas, can you please copy&paste the solving string (first line of the solution box) of sudokuwiki here?

16.09.2019, 10:57

After all even digits have been placed, and with all of the odd givens, the state of the puzzle is:

.8.4.6.2.2.6.8.4....4.2.65842.3.8.96.6.254.8.81.6.7.42638.4.2....2.6.8.4.4.8.2.6.

.8.4.6.2.2.6.8.4....4.2.65842.3.8.96.6.254.8.81.6.7.42638.4.2....2.6.8.4.4.8.2.6.

16.09.2019, 11:19

You are right. My sincerely apologies, I was absolutely sure, it was unique. That means I made a mistake at least 5 times. (And I did not do something silly like using uniqueness.)

16.09.2019, 12:20

Non-uniqueness will be fixed in the next version of the IB.

16.09.2019, 16:02

Yes I checked with Sudokuwiki.org and it showed multiple solutions as Feadoor mentioned.

Thanks for clarifying.

Thanks Richard.

Thanks for clarifying.

Thanks Richard.