1. yes 2. strong hand, asking for further description, implies but does not promise ♠ support, denies requirements for a splinter (shortness and 4+ trumps) 3. 2♠. Although this doesn't specifically ask for a stopper, partner should show one if that is the most descriptive bid. Partner can also rebid ♥ with 5 or more, or lacking that, bid a new suit without a stop. 3♠ is the best bid.