Push

Click or tap a rim piston. Point at it to preview. Arrows navigate pistons; Enter or Space presses. Clicking a square identifies its row. A drag cancels instead of pressing. Z, U or Backspace undoes. R resets. Escape clears a preview. Help contains a separate practice board.

Settings

Push

Fill every socket.

A piston compresses its entire row or column toward the opposite wall. Fixed walls split a lane into separate chambers. All slugs in each chamber pack together; sockets never lock them in place. Change direction to separate and reposition them.

Click or tap a rim piston. Point at it to preview. Arrows navigate pistons; Enter or Space presses. Clicking a square identifies its row. A drag cancels instead of pressing. Undo takes back a move, including a failed attempt; Reset starts this board again.

Try it

Practice uses the same rules and never changes the saved game.

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