Problem

THE AUCTION:

East opened with 1♦. South passed. West responded 1♠ and North bid 1NT – the Sandwitch 1NT, meaning North held 4+ hearts and 4 + clubs. East jumped to 3♠, showing strength. South bid 4♥, West 4♠. North went to 5♥ and East declared 6♠.

South and West passed. North doubled.

North led the ♣6 to South`s Ace (trick 1). What card should South play after winning the first trick to defeat the contract?

Dealer: East

Vul: Both

Contract: 6♠ by West