Identify a center and build a cross
Choose the lowest center and connect four edges whose height and width match the neighboring centers.
Visual guide · Intermediate
How to Solve a Mirror Cube
Solve a Mirror Cube with the 3×3 method by reading piece height and shape instead of sticker colors.
Work in order
The route to a solved puzzle
At every step, replace “which color belongs here?” with “which piece creates a flat surface here?”
Complete the first layer
Insert the four corners so every side of the layer forms a continuous, flat surface.
Algorithm
R U R′ U′Solve the middle layer
Match each edge by length and thickness, then insert it right or left as on a 3×3.
Algorithm
U R U′ R′ U′ F′ U FAlgorithmU′ L′ U L U F U′ F′Shape the last layer
Use the familiar 3×3 sequences for the cross and corner orientation, following height rather than color.
Algorithm
F R U R′ U′ F′Position the final pieces
Place the remaining corners and edges until all six faces are flat and the cube returns to its original shape.
Mirror cube troubleshooting: look for shape, not color
A mirror cube has the same basic piece layout as a 3×3. The pieces have different dimensions, so a solved face is identified by a flat surface and matching side heights. One flat face is not enough: the whole first layer must line up around all four sides.
- Locate the six centers before choosing your first face.
- Match each first-layer edge to its center by height and width.
- Check the two side surfaces of a corner before deciding that it belongs in that position.
- When a last-layer piece looks wrong, separate its position from its orientation. Turning a piece correctly will not fix a piece in the wrong slot.
If an algorithm seems to scramble a solved layer temporarily, finish the full sequence with the same grip before judging the result. Never force a turn when a protruding piece blocks the layer.
Review the 3×3 beginner method and face-turn notation. Once you can solve consistently, use the online cube timer to measure progress.
Mirror cube: a solved face or a solved layer?
A flat face is only the first check. Rotate the whole puzzle and inspect the four sides around that face: the first-layer pieces must form a continuous band with matching dimensions.
- Flat face, uneven sides: check whether an edge or corner occupies the wrong slot. Turning the whole cube will not fix its position.
- Right slot, wrong shape: distinguish the piece’s orientation from its position before choosing the next step.
- Already solved pieces seem disturbed: finish the complete sequence with the same grip, then check again. Do not stop halfway through an algorithm.
Use the 3×3 beginner guide for the layer goals and the move notation reference for turn directions. Return to the current layer’s checkpoint before trying to solve the next one.