Fill every row, every column and every connected line with the numbers 1 to N, using each number exactly once.

– Tap a bead to change its number. Tap again to cycle.
– Beads with a gold ring are yours to change. The rest are fixed clues.
– Lines are the twist — beads joined by a line form a group of their own, just like a row or a column.
– Pinch with two fingers to zoom in on the bigger boards. (On desktop: mouse wheel over an empty area.)
– Stuck? HINT fills in one bead for you. RESET clears everything you entered and leaves the clues.

Three ways to play
– Tutorial — 3 short boards that teach the line rule.
– Normal — 1000 stages. Boards grow from 4×4 to 12×12 and clues thin out as you go.
– Sandbox — 500 open boards with a single clue. No guidance, just the line structure.