The Hahn Method is a blockbuilding and intuitive keyhole based method. First build a 2x2x3 block then add one edge at the bottom and one edge at the left side. Next use the keyhole for placing every edge and two corners into position. The last step is to solve the remaining corners with L4C.
1. Build a 2x2x3 block leaving the F and U faces free
2. Add the FD and FL edge pieces