Example #6 - Quiz

You're sitting North, playing with a pick-up partner in a 12-board ACBL-sanctioned tournament on Bridge Base Online.
Bidding is based on standard 5-c major systems like sayc or 2/1, unless stated otherwise.

Dealer N Vul E/W Scoring MP Lead	♠ 43 ♥ J2 ♦ 7642 ♣ AKQT4
♠ ♥ ♦ ♣		♠ ♥ ♦ ♣
	♠ ♥ ♦ ♣

West	North	East	South
	p	p	2♣
p	2♦	p	2♥
p	3♣	p	3♦
p	3♠	p	4♣
p	?

You self-alerted your 3S bid as 'asking stoper' [sic].

To achieve maximum appreciation of the Aruf genius we suggest you decide on your action before looking at the full hand record, presented in the next post about this board.