This allows great versatility in approach for the F2L, along with a smooth transition into LSLL. The method was created as a Two-Look solution for the Last Slot and Last Layer without preorienting edges and maintaining a manageable algorithm count. The Zipper Method is a speedsolving method created by Justin Taylor in 2017, several months after development of the Ribbon Method. Low 40s With Blockbuilding, 45 With CFOP Background, 23 For LS+LL
