Editing User:Brian/Bridge/Responding to a one-level major opening

This page is incomplete.

==Without interference==
===Very weak hands===
A very weak hand opposite a 1-level suit opening contains 5- HCP. With a very weak hand, pass.

Note that if you have 3-card support for partner's suit, you can upgrade with distribution points for shortness in side suits, at which point your hand might be worth a 2M response.

===Minimal hands===
A minimal hand opposite a 1-level suit opening contains 6 to 10 HCP without support, or 6 to 10 total points with support.

I have a minimal hand and support &rarr; Raise partner's suit to the 2 level.

I have a minimal hand, partner opened hearts, and I have 4+ spades &rarr; Bid 1&spades;.

Otherwise &rarr; Bid 1NT.

===Invitational hands===
An invitational hand opposite a 1-level suit opening contains 11 to 12 HCP without support, or 10 to 12 total points with support.

I have an invitational hand and 4-card support or better &rarr; Raise partner's suit to the 3 level.

I have an invitational hand and 3-card support &rarr; Respond 1NT, planning to rebid 3M.

I have an invitational hand, partner opened hearts, and I have 4+ spades &rarr; Bid 1&spades;.

Otherwise &rarr; Bid 1NT.

===Game-forcing hands===
A game-forcing hand opposite a 1-level suit opening contains 13+ HCP without support, or 13+ total points with support (thus making a total of 25+ points or so).

I have 4-card support or better, and a side suit void or a small side suit singleton &rarr; Make a splinter bid, <i>i.e.</i>, a jump to your short suit above the 3 level of partner's major. (3&spades;, 4&clubs;, and 4&diams; are splinter responses to 1&hearts;, while 4&clubs;, 4&diams;, and 4&hearts; are splinter responses to 1&spades;.)

I have 4-card support or better and a balanced hand &rarr; Respond [[User:Brian/Bridge/Rebids after Jacoby 2NT|2NT]].

I have 3-card support and a balanced hand &rarr; Respond 3NT.

Partner's suit was hearts, and I have 4+ spades &rarr; Respond 1&spades;.

Partner's suit was spades, and I have 5+ hearts &rarr; Respond 2&hearts;.

Otherwise &rarr; Show a 4+ card minor at the 2 level.

==With interference==
I have a very weak hand &rarr; Pass.

===Minimal hands===
I have 5+-card support for partner's major &rarr; Consider preemptively raising to the 4 level, depending on vulnerability. Partner is expected to pass.

I have 3-card support for partner's major &rarr; Raise to the 2 level if you can, otherwise pass.

I have 5+ spades and can bid at the one-level &rarr; Respond 1&spades;.

RHO bid a minor suit at the 2-level or lower and I have 4+ cards in the other major &rarr; Make a negative double to show your 4-card major.

RHO bid a suit at the 1-level in which I have a stopper &rarr; Respond 1NT.

Otherwise &rarr; Pass.

===Invitational hands===
I have support for partner's major and RHO bid a suit below the 2-level of partner's suit &rarr; Cue-bid the enemy suit.

I have support for partner's major and RHO doubled &rarr; Bid 2NT, which is the conventional Truscott/Jordan limit+ raise.

RHO bid 1NT &rarr; Many partnerships don't have an agreement on how to respond in this case. The only "standard" response is double for penalty. If you actually want a way to have the contract in such cases, develop an agreement with your partner about the meanings of bids.

RHO doubled and I have 5+ spades &rarr; Respond 1&spades;.

RHO doubled and we don't have a fit in partner's major &rarr; Redouble.

RHO bid a minor suit at the 3-level or lower and I have 4+ cards in the other major &rarr; Make a negative double.

RHO bid a suit at the 2-level or lower in which I have a stopper &rarr; Respond 2NT.

Otherwise &rarr; Pass.

===Game-forcing hands===
I have support for partner's major and RHO bid a suit below the 3-level of partner's suit &rarr; Cue-bid the enemy suit.

I have support for partner's major and RHO doubled &rarr; Bid 2NT, which is the conventional Truscott/Jordan limit+ raise.

RHO bid 1NT &rarr; See the note in the previous section.

RHO doubled and I have 5+ spades &rarr; Respond 1&spades;.

RHO doubled and we don't have a fit in partner's major &rarr; Redouble.

RHO bid a minor suit at the 3-level or lower and I have 4+ cards in the other major &rarr; Make a negative double.

RHO bid a suit at the 3-level or lower in which I have a stopper &rarr; Respond 3NT.