From:

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I got the POLYCUBE program mentioned in the latest Scientific American

cube article, which has from 1x1x1 up to 7x7x7 cubes on the IBM Personal

Computer. I found it disappointing. It doesn't show the back of the

cube, making solving it VERY difficult. It should also allow user-defined

shorthand, so one could build macros (or simply define better notation).

The notation is good for the general case, but hard for the 3^3 case and

down - it is a general X-Y-Z notation, R or L direction, 1-n layer.

Thus RX1 is our "R"; "ZL1" = U', etc. The colors are pretty. You can

save a cube on disk if you haven't finished solving it, but only one.

Why doesn't someone design and write a general group-theory puzzle

simulation program. Draw any pattern (2 or 3 dimensions) on a screen,

associate it with a matrix, name some permutations in the matrix for

moves, and you should have any conceivable (drawable) rotating axis

puzzle modeled.

-- Stan

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