Logic Masters Deutschland e.V.

Cerberus

Rules:

Normal sudoku rules apply.

Place exactly one Cerberus cell in every row, column, and box. All Cerberus cells must contain different digits.

For each non-Cerberus cell, its value is defined as the sum of all Cerberus cells it can see in its row, column, and box.

For example, if the Cerberus cells are located at r1c1, r2c4, and r3c3, then:

Cell r2c3 has the value r1c1 + r2c4 + r3c3,

Cell r2c1 has the value r1c1 + r2c4,

Cell r1c1 has the value r1c1.

The sum of the digits within a cage must equal the clue given in the top-left corner of that cage.

Additionally, the sum of the values (as defined above) within a cage must also equal the same clue in the top-left corner.

Note: The digit in a cell doesn't necessary match the value i.e. there can be a cell with the digit 3 but have the value of 12.

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