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Questions regarding WSC round 2 - World Cup 1
#1
All questions regarding WSC round 2 must be asked here.
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#2
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.
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#3
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.
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#4
Same problem here, sudokuwiki.org finds lots of solutions for 2.8
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#5
Jonas, can you please copy&paste the solving string (first line of the solution box) of sudokuwiki here?
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#6
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.
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#7
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.)
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#8
Non-uniqueness will be fixed in the next version of the IB.
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#9
Yes I checked with Sudokuwiki.org and it showed multiple solutions as Feadoor mentioned.
Thanks for clarifying.
Thanks Richard.
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