UNDARKTILE

UNDARKTILE

Welcome to UNDARKTILE.

You should think of this like a video game. It's a puzzle, and your goal is to solve it.

You are the GREEN BLIP on the sole UNDARK TILE. You can move N, S, E, or W, i.e., only orthogonally. When you move onto a tile, you flip its DARKNESS PARITY. So if you move onto the DARK tile to your SOUTH, you will make it UNDARK. Your goal in this game will always be to make all of the tiles UNDARK.

But wait, it's not as simple as it seems! Sometimes attempting to move onto a tile from a certain direction will trigger a CHALLENGE. CHALLENGES come in many shapes, sizes, and forms. Some CHALLENGES can be attempted more than once; others give you only one or a few tries and can be permanently FAILED.

If you permanently FAIL a challenge, a red line will indicate your newfound inability to move onto that tile from that direction. But other directions may have different kinds of CHALLENGES, or may not even have CHALLENGES at all! Some CHALLENGES can be backed out of. There will be a special note when this is possible. Backing out of CHALLENGE never counts as a FAILURE. So if you think you'll have the solution to the CHALLENGE later, but want to go do other things for now, you should back out.

As I mentioned before, the goal of this game is to make all of the tiles UNDARK. If all of the tiles become DARK, you lose; if it becomes impossible to make a particular tile UNDARK due to a FAILED CHALLENGE or two, you lose. When you lose, you are kicked out of that particular map and have to solve another map to try it again. There may also be other lose conditions imposed, but those will be noted when a map is started.

Your first map is a very simple one, to get you used to the idea. I'll go on and tell you now that the center tile of this first map has a different CHALLENGE in each direction, and that none of the other tiles have a CHALLENGE. See if you can solve this!

(Input type: Sequential)

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