Some boards just swing

Say you pick up:

♠	K Q 8 7
♥	K J T 9 8 2
♦	-
♣	9 8 3

at all-vul, IMPs. Your partner who dealt opens 2NT which shows both minors and values of ghastly or better. The opponents dither about eventually bidding up to 4♠ without much confidence. You double and they scamper out to 4NT. Ha! That's probably going to play worse, double again! -810. Unlucky.

4♠ was down 3 at best. Heading back to score up you're hoping that you can gloss over this one quietly. After all you bid the edgy slam that made and won a good part score battle. You might still be in front and team mates are never so angry when you win. Turns out this board was your biggest pickup. Have a look at all four hands:

Vul: All Dealer: North	♠ J 6 2 ♥ - ♦ 9 8 6 5 4 ♣ K J 8 4 2
♠ 4 ♥ A 7 5 4 3 ♦ A K Q J 7 3 ♣ T		♠ A T 9 5 3 ♥ Q 6 ♦ T 2 ♣ A Q 7 5
	♠ K Q 8 7 ♥ K J T 9 8 2 ♦ - ♣ 9 8 3

Ghastly is the nicest word for the North hand I could find. Anyway at the other table North passed and East got to start: 2♠, 12 - 14 unbalanced (mind and distribution). Now South shouldn't overcall here, but sometimes we all do things we shouldn't. West had no doubt about the suitability of a 3♥ contract and doubled to finish the auction.

A diamond lead started the force, declarer exited in spades which was followed by a spade ruff. A club to the Q allowed a second spade ruff before a return to diamonds shortened declarer to four trumps. Getting fidgety declarer dreamed of the Q♥ being unsupported; the Ace felled the King but not the Queen and another Diamond came back. Resigned to a disaster declarer gave up to the Q♥ conceding a third spade ruff then ruffing the diamond return. East was left with the A♣ and a small spade taking the final 2 tricks +1400.