Monday, 2 March 2026

Lavaloid

Today's GAPP is Inturnal, which is basically Cave (creek) but a loop.

Rules: Draw a non-branching, non-intersecting loop through the centers of some cells. A number in a cell indicates how many of the corners of the cell are contained inside the loop.

Interface note: The grid has been offset so that shading (to mark gridpoints as inside/outside the loop) will work on gridpoints instead of cells. To satisfy the answer check, you can do one of these:
- Draw the loop
- Shade all gridpoints according to whether they're inside/outside the loop, including the grid borders.

GAPP 101: You cannot have a checkerboard of inside/outside points, otherwise the loop would intersect itself.

Finish the puzzle in 2:30 or less for a Speedy Sloth 🦥!
Finish the puzzle in 5:00 or less for a Quick Crab 🦀!
Finish with any time at all for a Shading Shade bush warbler 🐦!

Example (Penpa+): https://tinyurl.com/4swchxnb
Puzzle (Penpa+): https://tinyurl.com/mujnwz4w