tolvyrj, on 2011-March-05, 19:39, said:
U open 1
♣and partner responds 1
♦; next round u bid 1
♥and partner bids
1
♠; what does partners bid 1
♠means?
System is SAYC and u prd is Expert at profile and my guess is that so r u

some "experts" play 1
♠ on this auction as "fourth suit forcing"
Other "experts" play 1
♠ as natural, and a jump to 2
♠ as "fourth suit forcing"
It is my belief that in SAYC, 1
♠ is natural and not 4th suit forcing. A pass would be very rare over this, however. I don't believe the SAYC pamplet itself discusses this specific sequence, so I could be wrong. The best thing to do is to include this auction as one to discuss with a new partner, sayc or not.