Namyats is a convention that employs a 4-of-a-minor opening to show a strong 4-of-a-major opening.
4 = A strong 4
 = A strong 4 opening
 opening
4 = A strong 4
 = A strong 4 opening
 opening
What does "strong" mean? Let's assume you deal with nobody vulnerable. Consider these two hands:
A)  5
5 K Q J 10 7 6 5 3
K Q J 10 7 6 5 3 4 3
4 3 5 4
5 4
B)  --
-- A Q J 10 8 7 6 2
A Q J 10 8 7 6 2 K Q 2
K Q 2 4 3
4 3
With both hands, you'd like to preempt 4 to make it difficult on the opponents. The first hand is somewhat normal, but the 2nd hand is really too good to preempt--you could easily miss a slam. Playing Standard, I'd open Hand A) with 4
 to make it difficult on the opponents. The first hand is somewhat normal, but the 2nd hand is really too good to preempt--you could easily miss a slam. Playing Standard, I'd open Hand A) with 4 , but Hand B) with 1
, but Hand B) with 1 .
.
Playing Namyats, you still open Hand A) with 4 , but can open Hand B) with 4
, but can open Hand B) with 4 to tell partner you have "extra."
 to tell partner you have "extra."
The exact amount of extra depends on vulnerability and position. If vulnerable, a 4-level preempt is sound to begin with, so a   Conventional 4C or 4D opening to show a strong 4H or 4S opening, correspondingly   Namyats   opening would be even better than sound. Still, the hand can't be too strong; I would open 2 , not   Conventional 4C or 4D opening to show a strong 4H or 4S opening, correspondingly   Namyats   (4
, not   Conventional 4C or 4D opening to show a strong 4H or 4S opening, correspondingly   Namyats   (4 ) with:
) with:  A K Q J 8 7 6 2
A K Q J 8 7 6 2 A Q
A Q  A 3
A 3 2
2
.
Responses
After a   Conventional 4C or 4D opening to show a strong 4H or 4S opening, correspondingly   Namyats   opening, the partner has several choices. With no slam interest, he will sign-off in 4-of-the-shown major. With mild slam interest, he can bid the in-between-step. For example, after a 4 opening, say responder holds:
 opening, say responder holds:  A 8 7 6 5
A 8 7 6 5 2
2  A J 5 4
A J 5 4 K 8 3
K 8 3
. He can bid 4 to say : Pard, I am mildly interested--if you have a little extra, please cooperate with me. This bid says nothing about diamonds--it is completely artificial. The partner of a   Conventional 4C or 4D opening to show a strong 4H or 4S opening, correspondingly   Namyats   opener can also use Blackwood, control-bid, or just bid a slam.
 to say : Pard, I am mildly interested--if you have a little extra, please cooperate with me. This bid says nothing about diamonds--it is completely artificial. The partner of a   Conventional 4C or 4D opening to show a strong 4H or 4S opening, correspondingly   Namyats   opener can also use Blackwood, control-bid, or just bid a slam.
When is it on?
The partnership must discuss if this is on in all 4 seats. Also, you lose the ability to open a 4-level preempt in a minor. Some pairs using   Conventional 4C or 4D opening to show a strong 4H or 4S opening, correspondingly   Namyats   play that a 3NT opener shows a 4-of-a-minor preempt.
In case you haven't noticed, if you spell Conventional 4C or 4D opening to show a strong 4H or 4S opening, correspondingly Namyats backwards, you will see a very familiar convention.
Updated: June ,2012