With these formulas, we can combine the edges block by block. Animation: Combining edges THE LAST UNSOLVED EDGE We could solve most of the edges using the above formulas. Now let us put the inner edge to the right and the outer edges to the left. While the colors of each piece in the edge block are swapped. The edge color reversal formula leaves the inner edge in the same position, but swaps the position of the two outer edges,
We call the one in the third row the inner edge, the other two outer edges.
We will still rely heavily on the formula we learned in 4x4 cube:įor each side there are three edges. STEP 2: Combining The Edges.Ĭombining edges is time consuming, but intuitive. Place the two 1x3 blocks exactly as in Fig.b, then simply apply r2'B r2, the cube will looks similiar to Fig.a.įor situation c, that is.: the centers of the 1x3 block of the last two unsolved centers are correct, but the other two are wrong,Īpply the same formula r2'Br2Br2'B2r2, the cube will be in a situation similar to fig.a. įor situation b, that is: we need to replace one piece and this piece is the center of the 1x3 blocks of the last two unsolved center blcoks. Place the cube exactly as in Fig.a, then we can apply the formula: r2'Br2Br2'B2r2. Just replace the R or R' with r or r'.įor situation a, that is: we need to replace only one piece and this piece is not the center of the 1x3 block. We included it just for fun, because it is almost identical to the formula for the counterclockwise fish pattern in a 3x3 cube.
And if you proceed in this way, you do not need the last formula. Solve it in pairs (white-yellow) (red-orange) (green-blue). We can solve a 5x5 cube center blocks the same way as we solve a 4x4 cube, i.e., we Note that since r2' = r2, you can interchange r2 and r2' in the first three formulas as you wish.
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