Hold your Cube as shown below, Press "Next" to start.
Paint your Professor's Cube's current state onto the 3D model, press Solve, and follow the step-by-step instructions to reach a solved state.
Use the color palette in the top-right corner. Select from the 6 standard colors: White, Yellow, Red, Orange, Blue, and Green.
Click on any tile to paint it. Use the rotation arrows to access all 6 faces. Each face has 25 tiles (5×5 grid) — this is the most tile-intensive cube, so take your time for accuracy.
Each color must appear exactly 25 times across all faces. The 5×5 has a fixed center tile on each face (like the 3×3), which helps orient your painting. Double-check every face before solving.
Press Solve! to validate and compute a solution. The 5×5 solver may take several seconds due to the puzzle's immense complexity. Follow each move in playback mode using Next and Back.
The standard color scheme for the 5×5 Professor's Cube.
Our 5×5 solver uses the Reduction Method — it first groups the 9 center pieces per face, then pairs the edge pieces, and finally solves it as a 3×3. Solutions typically require 60–80 moves. With 2.83 × 10⁷⁴ possible states, this is by far the most complex cube we solve.
Invented in 1981 by Udo Krell, the Professor's Cube has 98 visible pieces and an astronomical 2.83 × 10⁷⁴ possible states. Unlike the 4×4, it has no parity errors thanks to its odd-numbered layers. The world record is 32.14 seconds by Max Park.