Logic Masters Deutschland e.V.

This puzzle was set for Zetamath's 200th episode. It uses the four clue types (black and white holes, killer cages, teleporting little killers, and hole sandwiches) that form the basic ruleset for Black Hole puzzles.

Rules:

Place nine "black holes" in the grid, one in each row, column, and box, each with different digits. Place nine "white holes" in the grid with the same rules. Put black and white holes in different cells.

Black holes have zero value and white holes have double value.

Standard killer cage rules. Digits don't repeat in a cage (but values can).

Any cage must have the same number of black and white holes (it can have zero holes).

Teleporting little killers. Little killers teleport from black holes to white holes with the same digit (never the other way). They can teleport one or more times (or not at all) and they never change direction. Include all visited holes in the sum.

Any little killer must visit the same number of black and white holes (it can visit zero holes).

Hole sandwiches. Sandwich clues sum the digits between black and white holes (not between the digits 1 and 9).

Comments are always welcome. I'd love to hear your thoughts about the puzzle. Have fun!

Streamers have permission to use this puzzle.

Play in SudokuPad