Logic Masters Deutschland e.V.

Normal 4x4 sudoku rules apply. (Each number appears once in each column, row and box) Exactly four digits from 1-9 must be placed once each in every row, column and box. The solver must determine which four digits to use!! Normal Kropki Pairs rules apply. (Cells seperated with black dot must have 1:2 ratio Cells seperated with white dot must be consecutive.) Cell within a grey circle (r4c1) must contain an odd digit. Digits on the grey line must be between the digits on the circles.

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