Deal 5


 
 WEST  NORTH  EAST  SOUTH
 1♣pass1♠
pass2pass BID 
 

The bidding has gone as shown.
Decide what you would say, then click on BID above.
  ♠ A Q 9 8 5
10 8 6 5
8 4
♣ K 7
 

 
Deal 5 ♠ 6
A K Q 4
9 6 3
♣ A Q J 10 3
 
 WEST  NORTH  EAST  SOUTH
 1♣pass1♠
pass2pass4
passpasspass

With his Reverse, partner has shown at least 17 points and at least 4 s.

You could fall back on the guidelines and say that with 10 points you need to make a positive bid at this time, but it is simpler to just rely on "SHE WHO KNOWS, GOES."

Since you know of an 8-card fit and at least 27 points you bid 4.

 Deal 6 
  ♠ A Q 9 8 5
10 8 6 5
8 4
♣ K 7