# Suboptimal solvers for the 4x4 and 5x5 cubes?

Submitted by Werner Randelshofer on Thu, 06/29/2006 - 14:15.

I am looking for a suboptimal solution algorithm for the 4x4 and 5x5 cubes.

I am pondering about prepending a third phase to Kociemba's two-phase algorithm for the 3x3 cube. The initial phase performs two-layer twists on a 4x4 cube or a 5x5 cube until the stickers on the edge parts and on the side parts line up to form a 3x3 cube. Then Kociemba's two phase algorithms takes over and solves the 3x3 cube.

Does anyone have experience with such an algorithm? I currently don't know how to create the pruning tables for the initial phase. Also I am not sure, if my approach will work at all.

TIA -Werner