How to play
Pipelink is complete once every cell, edge, region, and fixed clue satisfies the fixed pipe single loop completion test. The terminal check examines every relevant pile, cell, edge, room, and clue before awarding the result.
- Pipelink starts with its fixed information already marked and its editable spaces left for the player. Complete the missing pipe pieces so fixed pieces retain their orientations and every pipe cell belongs to one closed loop without branches. Restart reconstructs the same opening from the stored game ID, rules version, and seed.
- A move in Pipelink is accepted only while it preserves every already-visible requirement. Complete the missing pipe pieces so fixed pieces retain their orientations and every pipe cell belongs to one closed loop without branches. Failed validation leaves the move count, history, and board exactly as they were.
- Pipelink is complete once every cell, edge, region, and fixed clue satisfies the fixed pipe single loop completion test. The terminal check examines every relevant pile, cell, edge, room, and clue before awarding the result.