Lars Erik "Larry" Petrus (born 4 november 1960 in Luleå in Sweden) is
an accomplished speedcuber.
In 1982, he became the national champion of Sweden, and went on to
finish fourth overall at the first official
Rubik's Cube
Build a 2x2 block Expand to a 2x2x3 without destroying the 2x2x2 block Correct edge orientation Solve two complete layers Permute the remaining corners Orient the remaining corners Permute the final edges Petrus invented three simple and flexible algorithms to complete the last three steps, which he named Niklas, Sune and Allan. While the method stands alone as an efficient system for solving the Rubik's Cube, many modifications have been made over the years to stay on the cutting edge of competitive speedcubing. Many more algorithms have been added to shave seconds off the solution time, and steps 5+6 or 6+7 are often combined depending on the problems each case presents. Petrus' personal best speedsolve is 13.6 seconds, achieved in 2006. External links[edit] Rubik's World Championship 2005  Official Results
Solving
Rubik's Cube
v t e Rubik's Cube Puzzle inventors Ernő Rubik Uwe Mèffert Tony Fisher Panagiotis Verdes Oskar van Deventer Rubik's Cubes Overview 2×2×2 (Pocket Cube) 3×3×3 (Rubik's Cube) 4×4×4 (Rubik's Revenge) 5×5×5 (Professor's Cube) 6×6×6 (VCube 6) 7×7×7 (VCube 7) 8×8×8 (VCube 8) Cubic variations Helicopter Cube Skewb Square 1 Sudoku Cube NineColour Cube Void Cube Noncubic variations Tetrahedron Pyraminx
Pyraminx
Octahedron
Skewb
Dodecahedron
Megaminx
Icosahedron Impossiball Dogic Great dodecahedron Alexander's Star Truncated icosahedron Tuttminx Cuboid
Floppy Cube
Virtual variations (>3D) MagicCube4D MagicCube5D MagicCube7D Magic 120cell Derivatives Missing Link Rubik's 360 Rubik's Clock Rubik's Magic Master Edition Rubik's Revolution Rubik's Snake Rubik's Triamid Rubik's Cheese Renowned solvers Erik Akkersdijk Yu Nakajima Bob Burton, Jr. Jessica Fridrich Chris Hardwick Rowe Hessler Leyan Lo Shotaro Makisumi Toby Mao Tyson Mao Frank Morris Lars Petrus Gilles Roux David Singmaster Ron van Bruchem Eric Limeback Anthony Michael Brooks Mats Valk Feliks Zemdegs Collin Burns Lucas Etter Solutions Speedsolving Speedcubing Methods Layer by Layer CFOP Method Roux Method Corners First Optimal Mathematics God's algorithm
Superflip
Thistlethwaite's algorithm
Rubik's Cube
Official organization World Cube Association Related articles
Rubik's Cube
