Controls

You play by tapping blocks, not dragging them. Tap a block to select it, or click it with a mouse on a laptop, then tap or click the cell you want it to reach; it slides there in a straight line, stopping the moment another block or the wall is in the way.

How the blocks move is strictly limited:

• Horizontal blocks slide only left and right. Vertical blocks slide only up and down. No block can ever be rotated or lifted.
• The red block is the one you are trying to free. It slides toward the exit on the edge of the board, but only once the blocks blocking its lane are moved aside.

Blocks cannot overlap or pass through each other, so the puzzle is entirely about the order you move them. Undo steps back one move if a slide didn't help.

You solve a board by sliding the red block out through the exit, and the move counter tracks how efficiently you did it, since fewer slides is always the real goal.

Tips

• Find the red block's lane first. Everything you do serves one purpose: clearing the row the red block sits in, so start by identifying exactly which blocks are in its way to the exit.
• Work backward from the exit. Ask what needs to move for the red block to reach the exit, then what needs to move to make room for those blocks. Planning in reverse reveals the chain of moves.
• Don't move blocks aimlessly. Random sliding usually creates new jams, so make sure each move either clears the red block's path or frees a block that is in the way of clearing it.
• Create space before you need it. A block you must move later needs somewhere to go, so opening up an empty area in advance prevents you from getting boxed in mid-solution.
• Think about move count. Since every board has a solution, the real challenge is efficiency, so once you can solve a board, try to find a shorter path with fewer slides.
• Undo and rethink when jammed. If you reach a position where nothing helps, an earlier move was wrong. Backing up and clearing the path in a different order is the way through.

Frequently asked questions