Logic Masters Deutschland e.V.

The standard Sudoku rules apply.
Renban line, arrow ,dots ,quadruple and killer rules are not fully applicable because half of all clues are contaminated.
Half of the digits on the Renban line must have at least one digit that differs from it by 1, while the other half must not differ from any other digit by 1.
The sum of the digits on the arrow is either equal to half of the digit in the circle, or the digit in the circle is equal to half of the sum of the digits on the arrow.
Two digits connected by one of black dot have a 1:2 ratio , while the other are continuous .
Two numbers connected by one of white dot are continuous, while the other have a 1:2 ratio.
One of digit in a quadruple circle appears in the surrounding four cells, while the other does not.
The sum of the digits in the cage is either equal to half of the given number, or the given number is equal to half of the sum of the digits in the cage.

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