Find your next move.

Tap or click a piece to select it. Select several to move them as a group. Swipe or drag in the direction of the arrow, or press the matching arrow key. A valid group move shifts each selected piece one square. Tap a piece again to deselect it, tap empty space to clear the group, or press Escape.

Every piece that reaches its own matching destination settles there and turns the shared arrow 90 degrees clockwise. Two arrivals in one move turn it twice. Settled pieces stay in place. Think about the direction you will need after the move as well as where the pieces will land.

The entire move is blocked if one selected piece would leave the board, hit a fixed obstacle, enter another piece's destination, or move into a piece that is staying put. No move is spent on a blocked attempt. Try changing the selection. Move preview in the menu can help you see the next positions.

The challenge changes at midnight UTC. Your local clock may show a different time. Finish the first round to enter the second automatically. After both rounds, return for the next day's challenge. If the day changes while the game is open, follow the New challenge ready prompt.

Undo takes back an accepted move. Hint offers guidance for the current position. Their controls show your remaining allowance.

In the browser game and Android v2.0, free help must be claimed by sharing first. Sharing a challenge picture adds one use of the selected help. You can claim up to two Undo uses and two Hint uses each UTC day. On Android, successfully opening the system share panel claims the help; canceling it does not take the help back. In the browser, opening the supported system share flow claims it; otherwise, a successful copy of the picture and text claims it. The game does not publish to a social account for you.

When you return, the game briefly shows +1 and uses the help on the same position. If your position has changed, the allowance is kept rather than applying the old operation to a new board. After the free sharing allowance for that help is used up, a rewarded ad can offer one more use if ads are available. Each attempt has at most two rewarded-ad opportunities shared between Undo and Hint. If an ad is unavailable or not completed, no help is granted; you can keep playing without it.

The browser game is played at ta.jxdc.win. Web advertising is currently disabled. After approval, we plan to offer optional rewarded ads inside the game for additional Undo or Hint help. The company, guide and support pages on jxdc.win do not display ads.

Optional rewarded ads are enabled in Android v2.0. Availability can vary by region, privacy choices and ad supply. Playing the puzzle does not require watching an ad. The product guide shows where ads appear, how you choose to watch and how to use the reward.

See browser advertising privacy and Android privacy for the relevant information.

A Hint that cannot be produced or applied does not spend a use. An already unlocked Hint for the same position can be opened again. Follow the message on screen if the position, connection or day has changed.

You can restart an unfinished round from the menu. Completed daily rounds are locked so that the result stays consistent. A restart is not a way to reset daily help allowances. The next UTC day brings a fresh challenge.

The browser keeps progress and preferences on your device, and online features use a browser session to associate your challenge records. Return using the same browser and device. Private browsing, another browser or clearing site data may give you a different session; there is no account-based cross-device sign-in.

If you see a save or connection warning, keep the page open and reconnect before clearing anything. Clearing browser data does not itself erase records already stored by the online service. See game privacy for details.

Check your connection and use Retry connection if it is offered. If another window changed the map, follow the message about using the online position. When a new version is available, use Install available update from the menu. Avoid clearing site data as a first troubleshooting step because it may remove local progress.

The Android v2.0 app needs an internet connection when it starts to check for required updates and load today's challenge. After a successful check, basic moves in the same daily session can continue offline; reconnect to synchronize and use online help. A new UTC day needs a new check.

Free Undo and Hint must first be claimed by sharing, up to two uses of each per UTC day. Once the free allowance for that help is used up, optional rewarded ads may offer more: at most two ad opportunities per attempt, shared between Undo and Hint. Optional diagnostics are off by default and can be changed in the menu. Read the Android v2.0 privacy section for details.

If startup fails, reconnect and use Retry. When an update destination is available, the Update required screen links to Google Play or an official download; opening that link is not a completed installation. Avoid clearing app storage while a reward or move is awaiting confirmation. Contact support with the app and Android versions if a blank screen or startup problem persists.

Play in your browser or install the Android app. The product page has the Google Play link, direct APK download and installation instructions. Android 7.0 or later is required. iOS is under consideration.