I don't think that Best Buy is the right place to ask this question. You'd have better luck searching online forums with Minesweeper gamers and reading about their machine configurations or posting the question there.
However, I imagine it can run about any game in Ultra mode. It has more memory than about any consumer card out there so if it can't run it in Ultra I don't know what could.
If you can run Battlefield V, Metro Exodus and Anthem in Ultra, which you can, then I'd guess you can run any game in Ultra. For instance, Doom in Ultra looks great but it's an older game so the difference is not that great. I don't think Minesweeper is a really taxing game to begin with. I'm confident it would run well in Ultra.