It seems to me that number cluster in the initial Sudoku is quite against Sudoku rule. However, it will be interested to know how and why. I have a question which I don't know how to solve and I wonder if folks can help me out.

I wonder if the following pattern is designed properly, will it lead to a unique Sudoku. * represents a grid with a digit from '1' to '9' and dot represents empty grid.

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..*|***|*..

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..*|***|*..

..*|***|*..

..*|***|*..

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..*|***|*..

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