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by jozydapozy 3628 days ago
The 4x4x4 is far more difficult then the 3x3x3. The 5x5x5 is almost the same as the 3x3x3 with just one extra step, though it takes more time to solve. The cubes with even numbers (4x4x4, 6x6x6) are more difficult because these have no fixed centers.