Featured Puzzle – Invisible Sudoku #1

Can you solve a jigsaw sudoku puzzle with invisible walls? The sudoku part might be easy enough – fill in the grid with numbers and don’t repeat them in any row or column. However, you also can’t repeat them in an irregular region that you can’t see!

• Fill in the grid with numbers from 1-7.
• Digits may not repeat in any row, column, or irregular region.
• Invisible walls form the boundaries of each region.
• Skulls mark intersections of three walls.
• Intersections without a skull may not have a branching wall.