Matchpoints. Opening Lead ♣A
This was another tough play problem from Thursday afternoon at Brighton not solved by a couple of internationals. South was a bit pushy with his 2NT rebid, and North raised to game. West led the ace of clubs, on which East played the six, normal count, and switched to the queen of hearts. Plan the play. Strangely, Deep Finesse states that West can beat the contract with an initial low spade lead to East's king and South's ace, but this is clearly not the case, and is the second bug I have found in the last few weeks with Deep Finesse. After South forces out the spade guards, it says, "the defence can succeed by winning the next four tricks", which is not true!
It analyses the hand otherwise quite correctly, and the ending is quite pretty, and can, I think, be found.