1QQQCircuit

Trace a complete network in one continuous route.

This quiet, focused puzzle experience is built for short sessions. Read the network, choose a valid starting point, and drag from node to node until every line has been covered exactly once. Ordinary nodes may be visited again, but each edge can only be used once.

Across 90 handcrafted routes, the rules gradually expand:

• Open paths let you learn the core movement and discover which starts leave a workable route.
• Fixed-start routes make the first decision part of the puzzle.
• Marked-route puzzles ask you to visit highlighted nodes in order.
• One-way routes add arrows that must be followed in the correct direction.

The board gives clear snap feedback as you approach a node. Drag back to the previous node to undo the last segment, or use the undo control to repair a decision. A hint explains whether the next choice is shaped by remaining exits or by a directional rule, without revealing the full solution.

When a route closes early, your trail remains available for reflection. When every edge is covered, see your time, undo count, hint count, and personal best. Progress, daily route rotation, preferences, records, and no-hint badges are stored locally on your device.

No account, network connection, advertising, payments, external content, leaderboard, or personal data collection is used.