Irregular Killer Sudoku — Knight Features

The normal rules of Killer Sudoku apply, except, the usual 3x3 blocks have been replaced by irregularly shaped, coloured blocks (which must contain all the digits from 1-9).

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The objective is to fill the grid with numbers from 1 to 9 in a way that the following conditions are met:Each row, column, and 9 Irregular regions

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