josdavi Posted August 5, 2002 Report Posted August 5, 2002 Please teach me: I made a new puzzle 5 months ago and found a specialmathematical problem, this problem is still unsolved. The Puzzle - consists of eight 3-D connectable cubes with a solid colour sticker on each of the face of each cube. I can twist the layers like twisting the Rubik's cube's layers; I can shift the layers of the puzzle: shift the Top layer to be the new Bottom layer, shift the Right layer to be the new Left layer, shift the Front layer to be the new Back layer. I can Overturn the layers of the puzzle: separate a layer from the Cube Puzzle, turn over this layer and connect this layer with its opposite side to the Cube body again. I knew that there are 8! X 24 ^ 8 = 4438236667576320 different combinations of the 8 cubes, but I don't know how to calculate the probabilities when we constrain the manipulations on the Cube, just 3 kinds of operations are allowed - Twist, Shift, and Overturn. Is it possible we use just 3 kinds of operations (Twist / Shift / Overturn) to manipulate the 8 cubes to form all the combinations ? How to solve a scrambled such cube puzzle ? Thank you very much.
Captain Obvious Posted October 8, 2002 Report Posted October 8, 2002 The problem is that most of those combinations are just rotations of each other... Each cube has 8 different flavors (determined by the three exposed sides, one for each possible position, everything else is a rotation) and you need to remove all rotations of your initial selection which limits it to 8! * 8! = 1,625,702,400
josdavi Posted October 10, 2002 Author Report Posted October 10, 2002 Thank Captain Obvious. Prof. Maurizio Paolini had solved this puzzle and proved in Italian.Please take a look at the link - http://www.dmf.bs.unicatt.it/~paolini/varie/tsengpuzzle/
josdavi Posted October 28, 2002 Author Report Posted October 28, 2002 This puzzle is a real puzzle based on the "Magic Attractor", the first item in market is sellingon ebay. If you are interested to see more pictures, please take a look at this links - http://www.geocities.com/dynamic_toys/josdavi_09.html http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1782381251 Thanks.
Recommended Posts