absolute annihilation
(Published on 6. December 2024, 09:00 by aqjhs)
- Normal sudoku rules apply.
- Shade some cells so that the shaded cells form a single orthogonally connected region and no 2x2 area is completely shaded or unshaded. Unshaded cells must also form a single orthogonally connected region. If D is a digit in a shaded cell the value of that shaded cell is -D. Values of non-shaded cells are the same as the digit they contain.
- Values in cages must sum to the indicated total. Digits cannot repeat inside a cage.
- Cells on an arrow have a value sum equal to the value of its circle.
- Clues outside the grid show the value sum of the indicated diagonals.
- Cells joined by a black dot have values that are in a 1:2 ratio. Not all possible dots are given.
See also:
Solution code: The path between r2c2 and the closest instance of the same digit inside the same region (shaded/unshaded) including the start and end digits.
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