From the bidding East knows that South has 19+ points balanced (otherwise why didn’t south overcall 1NT at the start ?).

Therefore he can work out that partner has no values at all and he can count declarer’s tricks as 6 Diamond tricks, 4 probable club tricks plus two Hearts ie 12 tricks.

Therefore at trick two unless East cashes a second spade trick declarer will wrap up 12 tricks.

You can also view  watch the following movie to see how the hand pans out. (You need bridgvu.exe programme  or BridgeBase programme on your machine already to view it ) and it is available free from

http://www.haroldschogger.com/videos.htm