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Knot Funny

• Press Scramble to scramble the board.
• Press Reset to reset it.
• The red box forms an elastic band around the squares. It can be moved by clicking on a number. Using the left mouse button moves the top-left corner, the right button moves the bottom-right corner.
• Pressing either of the two arrows rotates only the outer squares of a rectangle, either clockwise or anti-clockwise.
• The idea is to return the grid to the reset position.