Board 2 above was an interesting hand for a number of reasons. Some may open the East hand 1NT but most would opt for 1♠. After a response of 2♥ from partner, showing a 5 card suit, some Easts would nevertheless prefer to rebid their spades rather than support partner's hearts. That's an unfortunate decision as West is likely to give up at this stage, sensing a misfit.
On the otherhand, any Easts who are courageous enough to support partner's hearts are well rewarded as West has little hesitation in bidding to 4♥.
Unfortunately 4♥ is doomed to failure on a diamond lead with a loser in every suit as unluckily both red kings are offside. However, why should North find a diamond lead and in fact North (Mary Killick) made a perfectly reasonable lead of the King of clubs which I won with dummy's Ace. What next?
At this point some Declarers would attack trumps. I decided instead to play a spade to my singleton King. You never know it might be allowed to win. It didn't and Mary took it with her Ace and made the correct switch to a diamond. That could have been a crafty play away from the King but I decided it wasn't and went up with the Ace then played off Queen and Jack of spades, discarding my two losing diamonds. Luckily nobody ruffed.
At long last it was time to play a round of trumps. I took a losing finesse to Mary's King and she played back a spade which I had to ruff in hand.
The timing of the play is now critical. Having already lost the Ace of spades and king of trumps, there is a club to lose but still the possibility of losing either another club from hand or a spade from dummy. If you draw the remaining trumps, you also cut the communications between the hands. I therefore played a club towards dummy's Jack. Mary went up with the Queen and played back a trump, revealing a 3-2 break but also noting Dick's 10 which probably meant Mary had the last trump.
Winning in hand, I played a club to the Jack, then finally played a heart back from dummy to draw the last trump but more importantly this was an entry to my hand to make the 13th club.
So 4♥ had mixed fortunes, two badly placed kings but then a lucky 3-3 break in clubs and luckily not an opening diamond lead.
The results on the traveller were 2♠ by East going one off, 2♠ by East going two off, 4♠ by East making (incredible!), 2♠ by East going one off, 1NT by West making with two overtricks, 3NT by East going two off, 3NT by West making, 2♠ by East making with two overtricks and 4♥ by West making.
As East you take a view as to what to rebid and the consequences are huge; support hearts and West's hand improves, rebid spades and West downgrades his hand. Personally I would support partner's hearts as John did mine.