[deep]

---

West lead Q Spades

I think I have to implement the squiz but how can I implement it to do 6NT. Thanks for your help.

[Tramticket]

Duck a diamond - this rectifies the count and might (if you are lucky) isolate a menace. You need one player to hold 4+ cards in each red suit, meaning that the other opponent cannot guard the suit.

Win the return at trick three and play off K♦, then your black suit winners and the the A♦. If the 4th round of diamonds is not a winner, play hearts from the top.

[Cyberyeti]

Tramticket, on 2019-December-10, 07:09, said:

Duck a diamond - this rectifies the count and might (if you are lucky) isolate a menace. You need one player to hold 4+ cards in each red suit, meaning that the other opponent cannot guard the suit.

Win the return at trick three and play off K♦, then your black suit winners and the the A♦. If the 4th round of diamonds is not a winner, play hearts from the top.

Actually you don't need an opp to hold 4 cards in each red necessarily, but the chance of W holding 6 spades and 4 hearts is only a minor addition.

Ducking a diamond is correct. Most squeezes operate with exactly one loser, and ducking a diamond means you do isolate the menace (ensure only one defender controls the suit).Now you have to hope one defender holds both red suits.

A side note, imagine you're in 7♣ rather than 6N on a safe trump lead, trumps are 3-2 a diamond ruff in dummy generates the extra trick so you still only have one loser, and you discover E has 5 diamonds, you cash ♥AK and discover W has 5 hearts, so the squeeze above won't work. There is no need to despair, cash the third heart, return to hand with a spade and you'll see:

---

Now you cash the ♣A and W can't discard a heart or dummy's 5 scores so he pitches a spade, you pitch dummy's heart and E is squeezed in spades and diamonds. The heart/diamond squeeze above is a simple or single squeeze, the one in 7♣ is a double squeeze. The spade lead and a spade continuation when you duck the diamond messes up the communications for the double squeeze in 6N, a different lead it could have worked there too.