Rain in Brum means I can return to this after setting it aside for dozens of overs. The instruction still conveys nothing. I'm assuming (since turns are mentioned) that it's x+1 straight segments (joined together) with x turns. (x has been indicated earlier.) Presumably there is a message of some kind reading along the line, and presumably other cells are required as well as those circled. Is this right? The 9th and 10th words of the instruction are the stumbling block.