Detailed instructions for working a group puzzle of type 'HyperSudoku-12'

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The 12 elements in each group of this type of puzzle are: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, and B.

Every group in the puzzle must contain exactly this set of elements.

In a HyperSudoku-12 puzzle, each row is a group numbered as shown in the figure above.

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In a HyperSudoku-12 puzzle, each column is a group numbered as shown in the figure above.

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In a HyperSudoku-12 puzzle, each 4x3 rectangle is a group numbered as shown in the figure above.

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In a HyperSudoku-12 puzzle, each 4x3 inner rectangle is a group numbered as shown in the figure above.

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In a HyperSudoku-12 puzzle, the 6x2 center elements are a group and are marked with '1st' in the figure above.

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