Cut

Click or tap a scissor mark. Arrows choose a thread; Enter or Space cuts. Clicking a ledge identifies its thread. Dragging cancels; tracing a cut path is not required. Z, U or Backspace undoes. R resets. Escape clears a preview. Help contains a separate practice board.

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Cut

Drop the marble into the bowl.

One thread can hold several paper ledges. Cutting it removes all of them. A flat ledge catches the marble; a slanted one carries it to its low end. Gravity settles each cut before the next. A cut can change a future route while the marble stays still, so order matters. The dotted route previews the next cut, using only visible information.

Click or tap a scissor mark. Arrows choose a thread; Enter or Space cuts. Clicking a ledge identifies its thread. Dragging cancels; tracing a cut path is not required. 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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