averages of 5 solves, the best time and the worst time are dropped, and the mean of the remaining 3 solves is taken. When only 3 solves are done, the mean of all 3 is taken. Lubrication Members of the cubing community lubricate their cubes to allow them to be manipulated faster, easier, smoother, and more reliably than a non-lubricated cube. The WCA allows lubrication for official competitions. A lubricant’s MSDS indicates potential cube-damaging properties. Cube lubricants normally belong to the silicone family of lubrication because these are less likely to damage the cube. There are also water-based lubes that usually dry out faster but sometimes can be faster. Also, there are plant-based lubes, they can also be fast, but it's advised to use them faster because they can spoil. Terminology Below are some definitions of words generally used by the speedcubing community. For a more complete list of speedcubing terminology, see the cubefreak.net glossary. One Look Last Layer. A set of 3915 algorithms to solve every possible state that the last layer could be in after completing F2L. The average optimal move count is 12.58. Algorithm A predefined sequence of moves used to effect a specific change on the cube. Often referred to as alg or (less commonly) an algo. AUF Often the final move of a solve, the AUF (adjust U face) is when, after the top layer is solved, it has to be moved to avoid a +2. BLD Blindfolded solving, i.e. memorize, put on the blindfold, then solve. Centerpiece One of the centers of the faces of the cube. The centers never move relative to each other on an NxNxN cube, where N is odd. On NxNxN cubes where N>3, every piece with only one sticker is referred to as a 'center piece', including those pieces that can move relative to each other. CLL Corners of the Last Layer. This is the first of two steps of one of the methods of solving the last layer of the cube. In the process, edges may be unoriented. This is used in Corners First methods for the last layer, in which first all corners are solved, followed by the edges (see ELL). CLL is also commonly used to solve the last layer of a 2x2x2 cube in one step. Commutator A commutator is a sequence of form A B A' B' (also represented as [A:B] or [A,B] which