Arrow Puzzle: Cubedrift

Cubedrift is an arrow puzzle about order.

Every piece is an arrow with a route: so many cells ahead, a quarter turn, so many more, and off the board. Tap it and it goes - but only if the whole route is clear. A route that runs into anything refuses: the arrow does not move a single cell, it turns a quarter clockwise, and the tap is spent.

That is why the board is worth reading. Clearing pieces in a good order costs almost nothing; clearing them in a bad one leaves you turning arrows in circles. Par comes from a breadth-first search over board states, run before the pack ever ships, so every board is known to be solvable and the grading works in airplane mode.

• DAILY - the same board for everyone, once a day. Beat the clock, keep your streak, share your result without spoiling it.
• LEVELS - 500 boards in three chapters, from five-wide openers to boards where every launch matters.
• WEEKLY - five boards, new every Monday, and a medal for each.

Made to respect your time:
• Gold, silver or bronze on every board, by how close you came to par.
• Hints come back on their own over time, or right away with a video.
• Colour-blind shapes, high contrast and a choice of palettes.
• Dark mode. Works offline. Tiny download.
• No sign-up and no accounts: progress stays on your device.

Undo everything, or reset the board and read it again.