Feliks Zemdegs Currently holds the world records for solving the following puzzles: 3x3x3 Cube Average, 3x3x3 Cube One Handed Single, 3x3x3 Cube One Handed Average, 4x4x4 Cube Single, 5x5x5 Cube Single, 5x5x5 Cube Average, 6x6x6 Cube Average, 7x7x7 Cube Single, 7x7x7 Cube Average.