It's possible to have a distinct SKU for particular option combination. Is it possible to reference the option combination in the URL?
My expected result would be some kind of a configurable string, so for example:
https://example.com/green-t-shirt-size-L.html
Or failing that, something as a GET variable:
https://example.com/t-shirt.html?option_id[4848]=2342&...
But in either case, requesting the URL would load the product with the appropriate options selected.