Variant of Cave:
- Draw a single loop along the dashed lines that encloses some cells. Edges of this loop may not cross or share a vertex.
- Numbers indicate the number of connected cells from all lines of sight radiating from that cell, including the cell itself. Numbers can be inside or outside of the loop. Lines of sight end on either the edge of the grid, the center of a triangular cell, or the edge of the loop.
All of the puzzles can be found organized in this printable PDF, or in the images below.