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The normal rules of Killer Sudoku apply, except, the usual 3x3 blocks have been replaced by irregularly shaped, coloured blocks (which must contain all the digits from 1-9).

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Chat 06 January 2022 (Digital)

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Sudoku - Wikipedia

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Logic Wiz Sudoku & Variations App Review 2022

Killer Solving Guide