[pescetom]

MP

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In East you are playing 6NT, opponents silent.
Lead ♦5, plan your play?

[akwoo]

How good is the field? How many do I expect to be in 6N?

If something like half the field (or more) is expected to be in 6N, I win trick 1 and take the spade finesse - either way I have a red squeeze.

If not, I duck the first trick to rectify the count to increase my squeeze chances.

[mikeh]

While the small diamond lead worries me, I don’t think it matters much. I duck and win the inevitable spade switch. Pop the ace, run the clubs ending in dummy and play the top diamonds.

I like my chances.

I am making if either red suit comes home. I squeeze North if he started with the spade K and 4+ hearts.

I am making if either opp started with 4 or more in both reds

Even better, I don’t have to guess the end position.

[mike777]

Option 1.
AD
Finesse spade if loses then
Win KD return, pitch spade
AC
AS, pitch D
Run clubs ending in West
QD