I didnt see the twisting stairs part. Spiral staircase or boxed in? A spiral staircase or open balustrade means you can lay it on its side and move it. If it's a square platform split staircase then the blanket stoll works. Or rolling it if the height clearance is tall enough to do so.
Not spiral, L shaped, one twist at the top.
Get a cardboard box, put it on the stairs, get behind the shelves and push with your legs. Stop and hold with your legs if you get tired. When you hit the top walk it sideways to turn the corner. Don't die.
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