JoostJa online bridge

♠ K 10 9 8 5 4
♥ 10 7 6 2
♦ -
♣ K 5 4


West is the dealer and both are vulnerable
WESTNORTHEASTSOUTH

1 ♣ Pass 1 ♠ 3 ♦
dbl Pass 3 ♥ Pass
3 ♠ Pass ???

My bid here was 4 ♠ and that ended the auction. We missed a good slam since West had ♠A Q 6 ♥K Q J ♦9 5 ♣A Q 8 6 3. Slam would be reachable if I bid 4 ♦.   The first round control in diamonds could be very important, and here it is, so I should tell partner about it.   The East hand only has 6 HCP but is another example of a hand that explodes with support points once a fit has been found.   It upgrades to about 13 support points (5 extra for the void in their suit and two extra for the extra trump).   West may have 19 points so a total of 32 is still possible.