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Black Holes (1188)
Instruction:
Place stars into some empty cells in the grid, no more than one star per cell. Cells with stars cannot touch each other along an edge or a corner.
Numbered cells represent the total "gravity" values of the first star seen in each of the eight standard directions from that cell. A star that is one cell away has a value of 4; a star that is two cells away has a value of 2; a star that is three cells away has a value of 1, and a star that is further than three cells away (or a direction that has no stars) has a value of 0. (Note that stars "block" other stars as numbered cells only see the first star in each direction, but numbered cells do not block stars from other numbered cells.)