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The snake was invented by Professor Erno Rubik, better known as the inventor of the Rubik's Cube.
The 24 prisms are aligned in row with an alternating orientation (normal and upside down). Each prism can adopt 4 different positions each with an offset of 90°. Usually the prisms have an alternating color.
The description of an arbitrary shape or figure can be described using a set of instructions for twisting the prisms.
The starting point is a straight line with the triangular edges facing towards you, where the 12 prisms of one colour at the bottom are numbered from the left from 1 to 12. The left and the right sloping faces of these prisms are labeled L and R respectively. The four possible positions of the adjacent prism on each L and R sloping face are numbered 0, 1, 2 and 3 (representing the number of twists between the bottom prism and the L or R adjacent prism). The numbering is based on always twisting the adjacent prism towards you: position 1 turns the adjacent blocks towards you, position 2 makes a 90° turn, and position 3 turns the adjacent block away from you. Position 0 is the starting position and therefore isn't explicitly noted in instructions.
Using these rules, a twist can be simply described as:
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