♠ x
♥ xxxxx
♦ Axx
♣ Kxxx
♠ AKQ9
♥ AKTxx
♦ x
♣ Axx
YES! PRECISION WITH AUTO TRANSFERS! WOOT WOOT!
1♣(16+ points, nothing about distribution)-p-
2♦(transfer to hearts, 7+ points, 5+ hearts, game forcing)-p-
2♥(Completed transfer, BETA asking bid for CONTROLS!-p-
3♣(Showing 3 controls where A=2 and K=1)-p-
3♦(EPSILON asking bid for side-suit control)-p-
4♣(Shows a singleton or an Ace (obviously an ace here))-p-
5♣(SMALL EPSILON asking bid for side-suit control)-p-
5♥(Shows second round control, either a King or a singleton, here a king obviously)-p-
5♠(SMALL EPSILON asking bid for side-suit control)-p-
6♣(Shows second round control, either a King or a singleton, here it MUST be a singleton as South HAS the King)-p-
Either 6♥ or 7♥, See under for the analysis!
NOW What does South know about North's hand:
♠ x
♥ xxxxx
♦ A
♣ Kx
South doesn't know where 4 cards are, they are NOT honors (definitely not Ace or King, Jack perhaps), and NOT spades (singleton was established).
Refresher: What does South HAVE:
♠ AKQ9
♥ AKTxx
♦ x
♣ Axx
Putting these together, you have club and perhaps diamond problems, but after trumps are taken, they are no big deal, ALSO you have KQ of spades to throw something on, so you can avoid doing too many cross-ruffs. So the question now is, will the Queen fall? If not, can I finesse the queen? The answer is there is above a 60% chance the Q will fall, and if the Queen doesn't fall, there is a 50% chance the finesse is on the correct side, and THAT WILL fall. So: 80% chance of 7H making.
BUT EVEN BETTER! Is South not only plays the hand, but HAS THE CHOICE between 6 or 7! (All because of the AUTO TRANSFERS!!!!!!!!
Overall, I would play 6H here, in Matchpoints, you'd be better off getting a high percentage (6H+1) than risking getting a 0% (7H-1). But in IMPS, I would go to 7H.

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