Kevin HY Hau - Hello World 👋

Rules: start at 1 and draw one line through every square of the board, touching each square exactly once. Pass the numbers in order, and the last number is where you finish. You can't cross a thick wall. Drag to draw, drag back to rub out, or tap a square next to the end to step. Tap any square on your line to cut it back to there. Arrow keys (or W A S D, or the arrow buttons) move the end of your line one square at a time; the first press starts at 1. Keys: Z undo, H hint, P pause.