Online School of Bridge: Lesson 020 - Play Hand 2
Doubles (Advancer has values)

[playhand]KQ75.AQ74.KJ6.83 94.KJT8.AQ9.7542 A83.65.875.AKQ96 JT62.932.T432.JT,2[/playhand]
[auctioncomments]|1||2|Double: 15 high card points, a doubleton club with no stopper, and support for the other suits.|3||4||5||6|The jump by partner shows 9-11 points and at least four hearts.[/auctioncomments]
[cardplaycomments]|1|East, who opened, will have most of the missing points. Make sure you trump high when they lead the third round of clubs.[/cardplaycomments]