Featured Puzzle: Seethrough #1 – The Invisible Dungeon

When he took a fantasy wargame and created his own rules focused on small-scale combat with only a few individuals, Gary Gygax started a revolution. Gradually, Chainmail evolved into Dungeons and Dragons, and the concept of role-playing games was born. When he passed away in 2008, fans around the world declared his birthday, July 27th, to be Gary Gygax Day. So let’s celebrate with a new type of puzzle!

This grid is actually a magical dungeon, in which all the walls are invisible. Fortunately, you have a map, which serves as a hint for where those walls might be.

• Each cell is one classic 5-foot square that’s part of a room.
• The number in each square represents how many other squares you can walk to in a straight horizontal or vertical direction without running into a wall.
• No cells may be isolated – we’re dealing with invisible walls here, not secret doors. So once solved, you should be able to walk from any square to any other square.