Landy: opp NT partner doubles (17 points) 2C : major all others natural The Raptor 1NT overcall over an opposing major suit opening is a contract bridge convention that indicates a two-suited hand with exactly four cards in the unbid major and a longer suit in an unbid minor. Capp: opp NT partner doubles (17 points) 2C = 10 - 16, any 6 carder 2D for which suit 2D = 5/5 in major 2H = 5 hts and a minor i can say: 2NT which minor 2S = 5 Sp and a minor 2NT = 5/5 in minors RKC: 4 Aces + K is 5 aces: 03/14/2/2+Q Trumps Blackwood: 04/1/2/3 Unusual 2nt (lower two suits) 1S - 2NT = minors 1H - 2NT = minors 1D - 2NT = C and H 1S - 2NT = D and H Michaels: 1C - 2C = 5-5 majors 1D - 2D = 5-5 majors 1H - 2H = S and a minor. 2nt to ask which one 1S - 2S = H and a minor. 2nt to ask which one Jacoby 2NT 1H/S - 2NT: 13+ HCP, 4 card support 4C/D/H(S): 5 carder good suit (2 of 4 honors) 3C/D/H(S): void or singleton 4H/S: game. low points (12-14) 3NT: intermediate points (15-17) 3H: go slow (18+) Ogust: 2H/2S: weak preempt by partner. 2NT asks to describe more (i need support and strong opening hand) 3C = low pts, weak suit 3D = low pts, good suit 3H = 8-9, good suit 3S = max pts, good suit Smolen (1NT and you have 5//4 in majors and game going hand) 1NT - 2C 2D (no major) - 3H = 5 spades and 4 Hearts - 3S = 5 Hearts and 4 Spades partner can chose between 5 card major or 3NT Bergen On major bid by partner shows 4 card support for partner 1H - 3C = 4 Hearts and 7 - 9 pts 1H - 3D = 4 Hearts and 10-12 pts 1H - 3H = 4 Hearts and 0 - 6 pts DONT when opp bid Double = 1 suit hand...if weak bid 2C and partner can pass with C suit 2C = Clubs and a higher ranking suit 2D = Diamonds and a major 2H = both majors 2S = spades and may be weak Inverted Minor On a minor bid, 2 of the minor is forcing with points 10-12. 3 of minor is weak and pre-emptive Some other tips. If opps call a suit and partnerovercalls and you are non-vul and support for partners suit then add the two suit lengths and go to that level directly