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Flower Variant

Flower Variant
12/04/19 22:10
I don't understand the rules for doing a flower-4 sudoku variant.

I understand that the nine inner blocks is a sudoku puzzle in its own, no same number where the diagonal lines are drawn.   But what am I supposed to do with the four white sides.  
Am I to assume that the left 9 squares must have unique numbers, middle 9 have unique numbers and right 9 have unique numbers?   I don't see how that can be done when there are two 3's that falls too close to each other.

The rules need clarification.
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