You cannot bid a suit at the One-level (it’s illegal!). The first decision is, can you bid your longest suit at the Two-level?
Use the Rule of 14 check. Add up the number of cards in the suit you wish to bid at the Two-level to your total high-card points. Do you reach 14?
If you fail the Rule of 14, you have to bid either the “dustbin 1NT” or raise to 2 ♠. I recommend raising to 2 ♠ whenever you have three cards, unless you have a very flat hand and three small spades. With either a small doubleton or a singleton in another suit and/or a picture in spades, support partner.
If you satisfy the Rule of 14, go ahead and bid at the Two-level, following the normal responding guidelines ie (a) longest suit, (b) cheaper of fours, (c) higher of fives.
Repsond to 1 ♠ with these
Hand a) | Hand b) | Hand c) |
♠ Q 8 4 ♥ A 4 ♦ J 9 8 4 3 2 ♣ 6 2 |
♠ 8 7 2 ♥ A K 3 2 ♦ A 5 3 2 ♣ 7 2 |
♠ - - ♥ 8 5 4 3 2 ♦ Q 8 7 4 3 2 ♣ A 2 |