Logic Masters Deutschland e.V.

This is the second puzzle in the Intro to Black Holes series. This puzzle introduces black and white holes and teleporting little killers.

These puzzles are meant to be an approachable introduction to black hole puzzles. The rules might seem a bit daunting, but please give them a try!

Intro to Black Hole Series

1. Intro to Black Holes, Part I
2. Intro to Black Holes, Part II
3. Intro to Black Holes, Part III

Rules:

Place 9 "black holes" in the grid, one in each row, column, and box, each with different digits. Place 9 "white holes" in the grid with the same rules. Put black and white holes in different cells.

Given digits may be black or white holes (or not).

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

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).

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

Hints: What happens if a little killer visits a white hole before a black hole? Can it ever visit a white hole except by teleporting? It is helpful to periodically consider which digits can go on a specific hole, and which holes a specific digit can go on.