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This puzzle is a cube which is built from smaller cubes, 6 to an edge, i.e.a 6×6×6 cube. Like a Rubik”s Cube each slice can rotate, whichrearranges the small cubes on the surface of the puzzle. The six sides ofthe cube are coloured, so every corner piece shows three colours, every edgepiece shows 2 colours, and every face centre only one.
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Unlike the normal 3×3×3 Rubik”s cube, turning a face does move the facecentres. The centres therefore can not be immediately used as a fixedreference point.
The V-Cubes worldwide patent was granted to inventor Panagiotis Verdes on2 December 2004, WO 2004 103497.
The number of positions:
There are 8 corner pieces with 3 orientations each, 24 inner edge pieces and 24 outeredge pieces apparently with 2 orientations each, 24 centre corner pieces, two sets of24 centre edge pieces, 24 inner centre pieces, giving a maximum of8!·24!6·38·248positions. This limit is not reached because: The total twist of the corners is fixed (3) The edge orientation is dependent on its position, i.e. edges cannot actually be flipped (248) There are indistinguishable face centres (4!6·4) The orientation of the puzzle does not matter (24)
This leaves 7!·24!6·36 / 4!24 =157,152,858,401, 024,063,281,013,959, 519,483,771,508,510, 790,313,968,742,344,694,684,829,502,629, 887,168,573,442,107, 637,760,000,000,000, 000,000,000,000,000= 1.57·10116 positions.
Links to other useful pages:
V-Cubes homepage has an on-line shop, and a solution method like this one.
Like the normal cube, there are several types of solution. Here I will only givethe “Edge-Matching” solution method.
Let the faces be denoted by the letters L, R, F, B, U and D (Left, RightFront, Back, Up and Down). Clockwise quarter turns of a face layer aredenoted by the appropriate letter, anti-clockwise quarter turns by theletter with an apostrophe (i.e. L”, R”, F”, B”, U” or D”). Half turns aredenoted by the letter followed by a 2 (i.e. L2, R2, F2, B2, U2 or D2).The above is the same notation as for the 3×3×3 cube. An internal slicewill be denoted by adding a subscript 2 or 3. So F2 is a clockwiseturn of the slice immediately behind the Front face, and F3″ is ananti-clockwise turn of the slice immediately behind that. Note that thesedenote a slice only, so such a move will not disturb the corners of the cube.
The location of any piece can be denoted by listing the three faces/slices it lies in.
Phase 1: Solve centresTo do this phase, you must know where the colours of the cube are supposedto be. If at any point you are unsure, look at the corner pieces to findout. The method below solves the U centres without disturbing any already solvedfaces. Simply repeat this for each of the faces. Find any centre piece edge that belongs on the U face. Hold the cube so that it lies on the F or D face. If the piece is in the front face, turn F to put the piece at the top right, i.e. in the U2 or U3 layer, and the R2 or R3 slice. If it is in the bottom face, turn D to put the piece at the front right, i.e. in the F2 or F3 slice, and the R2 or R3 slice. Turn the U face so that there is an incorrect piece at the back right location where the piece belongs.
Do one of the following move sequences to insert the centre piece: 1. From F U2 R3 to U B2 R3: Do R3 U” L2″ U R3″ U” L2 2. From F U2 R2 to U B2 R2: Do R2 U” L2″ U R2″ U” L2 3. From F U3 R3 to U B3 R3: Do R3 U” L3″ U R3″ U” L3 4. From F U3 R2 to U B3 R2: Do R2 U” L3″ U R2″ U” L3 5. From D F2 R3 to U B2 R3: Do R32 U” L22 U R32 U” L22 6. From D F2 R2 to U B2 R2: Do R22 U” L22 U R22 U” L22 7. From D F3 R3 to U B3 R3: Do R32 U” L32 U R32 U” L32 8. From D F3 R2 to U B3 R2: Do R22 U” L32 U R22 U” L32 Repeat a-d until all 16 centre pieces in the U face are correct. Repeat a-e for each of the faces.
Phase 2: Match up the inner edges.In this phase the inner edge pieces are matched up to form matching pairs. Find any inner edge piece that is not yet matched up with its twin inner edge piece. Hold the cube so that this piece lies at the U B L3 location. Find the matching inner edge piece. Use any face moves to bring it to the U F R3 location. Find any unmatched inner edge pair and put them at the U R location, using only L/R/D face moves so as not to disturb the other pieces. If there is no other unmatched pair, then do U2 R3 U2 R3 U2 R3 U2 R3 U2 R3 to make some new unmatched inner edge pairs and try again. Do R3 B”RB R3″ to pair up the inner edges. Repeat a-d until all inner edges are paired up.
Phase 3: Match up the outer edges.In this phase the outer edge pieces are matched up to the inner edge pairs. Find any outer edge that is not yet matched up with its inner edge pair. Hold the cube so that this piece lies at the U F R2 location. Find the matching inner edge pair. Use any face moves to bring them to the U B location. Check that the inner edge pair shows a different colour on the U face than the outer edge piece. If not, then flip over the inner edge pair by doing B” U R” U”. Find any other unmatched outer edge piece and put it at the U R B2location without disturbing the other pieces. If there is no other unmatched pair, then do U2 R2 U2 R2 U2 R2 U2 R2 U2 R2 to make some new unmatched outer edges and try again. Do R2 B”RB R2″ Repeat a-e until all edges lie in matching edge quadruplets.
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Phase 4: Solve the cube. Solve the cube as far as possible by turning outer faces only, using any method for the 3×3×3 cube. There are two situations that can occur that are not possible on the normal Rubik”s cube, viz. a flipped “edge”, or two swapped “edges”. To solve the cube in these situations, you can use one of the following sequences: 1. To flip the UF quad, do R1232 B2L U2 L23 U2 R23″ U2 R23 U2 F2 R23 F2 L123″ B2 R1232. 2. To swap the UF-UB quads, do U232 R232 U1232 R232 U2 R232. If you end up with two swapped corners because your method solves the corners last, then also swap two edges using the second sequence above, after which you should be able to solve the cube again.