East should bid 4♥, but the real problem is the 4♦ bid. I really see no reason to bid 4♦ besides not having the needed values for that bid, it might cause some confusion about the 4♥ bid from East, natural or CUE with ♦s ?
If east had Kxx of ♠ a trump might be very normal, so your plan on a ♠-lead should probably be reconsidered.
Leading a singleton trump is often a bad idea, so on a ♠-lead I would ruff 2 ♥s and take the ♦-finesse (After dropping a ♦ on the ...
I think the authors just want you to throw a ♥ when caching the ♠, as that works with the actual layout.
But with a ♥-lead, ♠ ducked, and ♠ back, you should cross to the ♦A, and take KJ of ♣, when West follows he can no longer have ...
I think both players did some bad bidding. Normally in the reopening situation you can borrow a king (or an ace from partner), but then you have to return it if you bid again.
In the reopening situation it is often difficult to describe the hand, so a jump in ...
Why did North not bid 1♠? Probably due to system agreement, but it is interesting to know if a 5-2-5-1 hand must double?
Could partner have 6-card ♠? (ie no Weak Jumps here)
Declarer seems to be 4-6-1-2
If this is right we can make 3 ♦ and forgot ...
The website states:
Below tables gives the a priori chance of being dealt a hand with a longest or a shortest suit of given length.
So your odds each time you pick up a hand is 1:3000 that you have a 9-card suit.
So about 1:5.000.000 ...
Odds to get a 9-card suit
9 card 9-2-1-1, 9-2-2-0, 9-3-1-0, 9-4-0-0 0.00037
so around 1 every 3000 hands
so 3 in 50 hands is like winning the lottery