Tidegrid

Two ferries. Two deliveries. One sea that changes with every move. Read the water Every sail or wait advances a visible four-phase tide. Shallow crossings open and close in a predictable rhythm. Share the channel Ferries cannot overlap. A boat caught on dry ground waits for water while the other ferry keeps moving. Sixty thoughtful crossings Explore six chapters, replay for optional move-efficiency goals and ask the solver for a route from your current position. A little crossing each day An offline daily challenge uses validated puzzle variants. Share your result as text, without an online leaderboard. Undo is unlimited, including after a completed puzzle. Hints search the current board and can be followed one move at a time. Every published efficiency goal is the shortest solution from the initial position. Progress and the entire active move history are saved locally. The daily challenge uses your device’s local date. No timer, multiplayer, real-world navigation or online ranking. All 60 puzzles are included. One-time purchase. No ads, no subscription, no account. Works fully offline.