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Scoring: IMP
The contract was duly doubled. The ♦6 (fourth best) was lead to the ♦D. Curtains.
On hindsight I find the 3nt bid foolish. I believe that my considerations about well-placed cards has some merit, but the hand is no way near extreme enough. The ♦K is a liabilety rather than an asset, and the club-suit is way to bad. But note that the defence cannot keep declarer from eight tricks, and will have to be on their toes, to keep him from nine.
(IV)
Scoring: IMP
The ♣J was lead. Curtains.
This is the only hand, where I really feel 3nt is the correct bid. Partners take-out double makes it very likely that diamonds will run, and you only need to find partner with a soft ace. Even here, finding partner with a not perfect minimum,,after an understandable wrong blind lead, it sailed home.
(II)
Scoring: IMP
The♥Q was lead to the king. West captured the second Club, and cashed a high diamond before exiting with a spade. Curtains.
Here I bid 3nt, so that i could go down in 3nt, instead of watching partner go down in 3♣. Well both should have been down, as the defense had a major lapse. I have little sympathy for 3♦; it will often get us to a worse partial, and it will often wrong-side 3nt. East on lead, will be left to his own devices, while west will have a good indication of which major-suit should be attacked. You will not have a hard time convincing me, that pass is the right bid.
(III)
Scoring: IMP
I didn't bid 3nt on this one, the only one where it is a double-dummy winner. :-)
I don't really know what all this goes to show (apart from me being a little crazy), but though luck played it's part, they are all cases in favour of the saying:
"See no evil, hear no evil, BID 3NT"