OSOB0101 Dangerous opponent

Online School of Bridge: Lesson 010 - Play Hand 1
Which Card When (The Dangerous Opponent)

[playhand]Q83.KJ6.AQ7.AJ65 AJT.84.K95.KT943 K654.T73.JT2.Q87 972.AQ952.8643.2,1[/playhand]
[auctioncomments]|1||2||3|Strong balanced hand.|4||5||6||7|Nothing more to say.[/auctioncomments]
[cardplaycomments]|1|One heart trick and seven other winners. Even losing to the !cQ will set up two more tricks, but the danger hand which must be kept off lead is East. [/cardplaycomments]