Rubikova Kocka
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Benchmarking Beginner Algorithms for Rubik's Cube
DEGREE PROJECT, IN COMPUTER SCIENCE , FIRST LEVEL STOCKHOLM, SWEDEN 2015 Benchmarking Beginner Algorithms for Rubik's cube ANDREAS NILSSON, ANTON SPÅNG KTH ROYAL INSTITUTE OF TECHNOLOGY CSC SCHOOL Supervisor: Michael Schliephake Examiner: Örjan Ekeberg Abstract Over the years different algorithms have been developed to step-by-step solve parts of the Rubik’s cube until fi- nally reaching the unique solution. This thesis explores two commonly known beginner algorithms for solving Rubik’s cube to find how they differ in solving speed and amount of moves. The algorithms were implemented and run on a large amount of scrambled cubes to collect data. The re- sults showed that Layer-by-layer with daisy algorithm had a lower average amount of moves than the Dedmore al- gorithm. The main difference in amount of moves lies in the steps that solve the last layer of the cube. The Layer- by-layer with daisy algorithm uses only one-seventh of the time-consuming operations that Dedmore algorithm uses, which concludes that it is more suitable for speedcubing. Sammanfattning Över åren har ett antal olika algoritmer utvecklats för att steg-för-steg lösa delar av Rubik’s kub för att till sist kom- ma fram till den unika lösningen. Denna rapport utforskar två allmänt kända nybörjaralgoritmer för att lösa Rubik’s kub, för att finna hur dem skiljer sig åt i tid samt antal operationer för att nå lösningen. Algoritmerna implemen- terades och kördes på ett stort antal blandade kuber för att samla data. Resultatet visar att Lager-för-lager med daisy algoritmen hade ett lägre genomsnittligt antal förflyttning- ar jämfört med Dedmore algoritmen. -
Breaking an Old Code -And Beating It to Pieces
Breaking an Old Code -And beating it to pieces Daniel Vu - 1 - Table of Contents About the Author................................................ - 4 - Notation ............................................................... - 5 - Time for Some Cube Math........................................................................... Error! Bookmark not defined. Layer By Layer Method................................... - 10 - Step One- Cross .................................................................................................................................. - 10 - Step Two- Solving the White Corners ................................................................................................. - 11 - Step Three- Solving the Middle Layer................................................................................................. - 11 - Step Four- Orient the Yellow Edges.................................................................................................... - 12 - Step Five- Corner Orientation ............................................................................................................ - 12 - Step Six- Corner Permutation ............................................................................................................. - 13 - Step Seven- Edge Permutation............................................................................................................ - 14 - The Petrus Method........................................... - 17 - Step One- Creating the 2x2x2 Block .................................................................................................. -