TomZ Constrained Cube Ultimate

A Constrained Cube is a puzzle where the freedom to rotate the faces is restricted.This cube has five constrained faces. The white face cannot be turned at all, the red and orange faces can be turned by a quarter turn, the blue and green faces by a half a turn and the yellow face is unrestricted.

Turning was is a little stiff on my cube, especially the yellow face. Corner cutting is poor but it is not a puzzle for speed solving so I don't see this as a problem.

Solution

This puzzle is obviously more difficult to solve than a regular one but it is not as difficult as one might imagine. Complete freedom to turn the yellow face is a major boon, while the inability to turn the white face is little or no handicap after the white edges are solved. It is not a problem to flip the orientations of the green and blue centres allowing some flexibility.

Step 1: Solve the White Edges

Intuitive. 

Solve in such a way that it is possible to execute an M-move on the white/green/yellow/blue layer. This makes it easy to flip the green and blue centres later on. Also, solve the green and blue centres such that they can perform a full half turn.

The white face becomes the D-layer.

Step 2: First Two Layers

Block building or F2L techniques work here, but I had to work around the limitations of the constrained faces.

 

Step 3: Orientate the Yellow Edges

I try to do this at the same time as step 2 but it does not always work out that way.

Step 4: Solve the Yellow Corners

Regular algorithms work here but some inventiveness is necessary to work around the constraints. Obviously, the bottom layer cannot be used to rotate the corners.

Step 5: Permute the Yellow Edges

All that remains is the relatively simple task of putting the yellow edges into their solved positions.

It is a very satisfying puzzle to solve, not as difficult as it looks.