affects only specific portions of the cube, leaving the rest untouched. This is used in Blindfolded solving and Fewest Moves Competition. It is also a method used to create algorithms. Corner piece One of the 8 pieces with exactly three colors, called a "corner" piece because a corner is exposed. Corner twist If a solve is finished with one corner twisted around, the solve is considered null. This is called a corner twist. CR Short for Continental Record (e.g. Record for a continent). Can also be "Continental Rank" when referring to the rank of a person's record in a database. Cuber Someone who solves a Rubik's cube, any of its other sizes, and/or other shaped puzzles. One of the mechanically independent pieces that make up a puzzle. The cubies do not include fixed center pieces, the central axis to which they are attached, or any other internal pieces (Such as the internal edges of a 4x4 or 2x2). Cycle To rotate pieces' positions on the cube. e.g. a 3-cycle would make cubie set A-B-C become C-A-B. Initialism for Did Not Finish, used in competitions and self-timing. e.g. when a piece pop occurs and the competitor decides not to continue solving the puzzle, or when the solver stops the timer and the puzzle is 2 or more turns away from being solved. Did Not Start, used in competition when the competitor does not begin a solve, either by opting to skip it (common in Blindfold Cubing), by not showing up when he or she is called, or not qualifying for the remaining (usually three) solves of a certain round. Edge piece One of the 12 pieces with exactly two colors, called an "edge" piece because only one edge is exposed. Edges of the Last Layer. The second of two steps of one of the methods of solving the last layer of the cube, solving the edge pieces without disturbing the corner pieces (see CLL). Edge Permutation of the Last Layer, specifically refers to the PLL cases in which only edges must be permuted to solve the cube. First two blocks. This is used in the Roux method. F2L First two layers. This is used in the CFOP (Fridrich), Petrus, and ZZ methods. Finger trick Techniques that cubers use to turn the cube quickly. Rather than turning a layer with the whole hand, only a finger is used. FMC Fewest move challenge.