The colour count is wrong
Choose your cube size and check the count for each colour. A cube with N stickers per edge has N² stickers of each colour and 6 × N² in total. Once the counts match, check that the pieces form a valid arrangement.
The back or bottom face looks reversed
Follow the editor’s face guide and keep track of which faces it shows as the top and front. Enter the back face as seen from behind and the bottom face as shown in the guide. If you lose track, reset the view to keep the colours you’ve already entered.
The 3×3 is in an impossible state
A single twisted corner, a single flipped edge, or a swap of exactly two pieces cannot come from legal turns on a standard 3×3. First compare the affected stickers with your physical cube. If the colours match, check whether a corner was twisted or the cube was reassembled.
Parity on a large cube
On even-layered cubes from 4×4 to 16×16, a legal position can look like a flipped edge pair or two swapped edge pairs after reduction. Enter the cube at its full size so the solver can account for its centres and inner layers.
On odd-layered cubes from 5×5 to 17×17, fixed middle edges and the pieces around them have different constraints. Check whether the edge group is still unpaired before treating it as a flipped 3×3 edge.
The moves don’t match my cube
Pause and compare the front and top faces of your cube with the player’s starting position. Look directly at the face you’re turning to work out which way is clockwise. Use Previous move to undo the last move or Restart Solution to return to the saved starting state.
If you’ve edited the colours or entered a different cube, run the solver again for the current state.
Read the notation guideThe solver is slow or unavailable
Larger cubes can take longer to solve. Leave the colours you’ve entered in place while the solver runs. If it times out, check your connection and try again. After all the moves have played, the player shows whether the displayed cube is solved.
The QR code or app connection has stopped working
Check that both devices are online. If the session has expired, reopen the scanner in the browser tab where you want the solution to appear, then scan the new code.
See the scanner set-up guideA saved result has disappeared
Private browsing, storage restrictions, or clearing website data can erase a browser session. Enter or scan your cube again so the solver can verify the starting state and calculate a fresh solution.
My puzzle is a picture cube or a shape mod
The solver checks sticker colours on standard cubes from 2×2 to 17×17. Picture cubes and shape mods can also depend on how the pieces are oriented. Check the orientation of those pieces on your puzzle after following a solution based on sticker colours.