Logic Masters Deutschland e.V.

This is the third puzzle in the Black Hole series. I'd love to hear your thoughts about the puzzle.

Thanks to Ryagami, Mormagli, Darth Paradox, Clocksmith, Scojo, and Playmaker6174 for testing and feedback.

Black Hole Series

1. Tachyons and Black Holes (Ransk Solve)
2. Quasar Accretion Disc (Ransk Solve)
3. Corotating Photon Sphere (Ransk Solve)
4. Information Paradox
5. Manifold Paths
6. The Colour out of Space

Completing this puzzle involves: shading some cells, doing killer cage and little killer sum logic with double-value and zero-value cells, and doing modified sandwich sum logic.

Rules:

Normal sudoku rules apply.

Place nine "black holes" and nine "white holes" in the grid, such that there is one hole of each type in every row, column, and box. Black and white holes cannot occupy the same cell. Digits cannot repeat within holes of the same type. Black holes have a value of zero and white holes have a value equal to double their digit.

Standard killer cages. Values in a cage sum to the clue in the top left corner of the cage. Digits cannot repeat in a cage (though values can). Killer cages must contain an equal number of black and white holes (the number may be zero).

Teleporting little killers. Clues outside the grid with arrows are the sum of the values along the pointed diagonals. Little killers will teleport *from* any black hole they visit *to* the white hole with the same digit (and never in the other order), where they continue in their pointed direction. The sum includes all visited holes. Little killers must visit an equal number of black and white holes (the number may be zero).

Hole sandwich clues. Clues outside the grid without arrows are the sum of the digits between the black and white holes in the row or column.

Comments are always welcome. Have fun!

Streamers have permission to use this puzzle. Recommended betting cell is r6c6.

Play in SudokuPad