This is a nice breather, with not much memory involved. Both sections are shown together (they are fast, easy, and related).
What's important here is not methods, but "style." It is critical to have a style and stick to it. It's okay if one partner is aggressive and the other conservative (reminds me of "Bergen-Cohen"). But, know your partner's style and stick to your own.
I recommend being sound if vulnerable, but aggressive if not vulnerable. White against red is the time to be super-aggressive. In 3rd seat, go really wild. Opposite a passed partner, my jump overcalls (though marked as "weak") can be wide-ranging. Stylistically, I love to jump overcall 2♥ after P-(1♦)- with as much as:
Because our partner has already passed, we don't rate to have a game. As long as he follows the LAW (raises only with trump support to the appropriate level), we should be fine. Of course if partner is an UPH (unpassed hand), I can't preempt with so much strength.
All preempts in this section are natural and assumed to be 6-card suits on the 2-level and 7-card suits on the 3-level.
The "regular" version of LC Standard doesn't use NAMYATS. Experienced/expert/scientific players can add this to the card (described on the next page).
Namyats is a convention that employs a 4-of-a-minor opening to show a strong 4-of-a-major opening.
What does "strong" mean? Let's assume you deal with nobody vulnerable. Consider these two hands:
A) ♠5 ♥KQJ107653 ♦43 ♣54
B) ♠-- ♥AQJ108762 ♦KQ2 ♣43
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♥, but Hand B) with 1♥.
Playing Namyats, you still open Hand A) with 4♥, but can open Hand B) with 4♣ 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 Namyats opening would be even better than sound. Still, the hand can't be too strong; I would open 2♣, not Namyats (4♦) with: ♠AKQJ8762 ♥AQ ♦A3 ♣2.
After a Namyats opening, responder 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: ♠A8765 ♥2 ♦AJ54 ♣K83. 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 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 Namyats play that a 3NT opener shows a 4-of-a-minor preempt.
Plus... it's free!