Sudoku-aufgaben
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Wie gefallen Ihnen die Sudoku-aufgaben?
Thanks! I missed this hint, so I made it more difficult to solve for me.
It's necesarry to read the whole rules and to apply it then... I know it can be a problem sometimes, but there is the sentence in German version "zwischen allen benachbarten Feldern".
So then you can use the inverted rule.
Then in this result 512683479 it has to be a dot between R3C2 = 1 and R3C3 = 2 but there is none.
So it's possible the only solution 572683419.
These Kropki aren't difficult if you use this inverted rule.
Kodyn
These were realy very difficult puzzles to solve in 2 hours.
Now I had time to solve the puzzles of the Sudokucup 2009 without time pressure.
I found that No. 4 (Kropki) has 3 solutions. Can this be?
512683479
517632984
and
572683419
571632984
In addition there is another possibilty to arrange 1 7 and 9 in the first two squares.
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