This is a Sudoku puzzle, with a twist. Only the numbers 1 to 7 are used in this puzzle, and two spaces in each row, column, and box will not have numbers. Those spaces contain stars instead. Two cells containing stars may not be adjacent, not even diagonally.
(Click for larger size)
If I ever do this variation again I’ll probably do irregular regions and maybe add an extra row or column. A 9 by 9 star battle with those regions just doesn’t have enough solutions for these to stay interesting.