This list, especially useful for OKBridgers (these commonly used conventions aren't explained anywhere in the OKBridge web site or help file and the first two aren't in Pavlicek and Root) was put together by Marcia West (tarsh). Thanks, Marcia.
This page currently describes the following:
Cappeletti or Hamilton (it has either name) is as follows: x = penalty 2c = single (unspecified) suit partner must bid 2d relay 2d = majors 2h = H and a minor 2s = S and a minor 2n = minors
What kind of strength is indicated here?
This has no particular strength, just more in the trick
taking
idea.
Any time you make a bid over NT openers you mess up the bidding,
which
is the purpose......you would be more likely to bid when you are
NOT
vulnerable, and they are....or when you have good playing suits,
but
not necessarily the high card count. These are the
Michaels/Unusual
no trump types of hands. However many players do it with 4 card
suits.
You will be surprised how this can mess up the bidding...unless
your
opponents are strong! then watch out.
* = single suit, forces partner to bid 2c (X'er passes
or bids his real suit)
2c = clubs and a higher ranking unspecified suit,
partner
bids 2d to ask higher - if diamonds higher, pass,
otherwise bid the higher
2d = diamonds " " " " " "
2h = hearts and spades " " " " "
2s = only spades - not a good a spade suit than if you
had used the * forcing 2c followed by 2S.
In the case of clubs and a higher suit, partner bids 2d IF he does NOT like clubs. If that isn't bidders second suit, he will bid his second suit at that time.....therefore, do not take it out of clubs if you have NO tolerance for another suit..... All other bids, like 1n 2d, if you do NOT like diamonds bid 2 hearts if hearts is NOT partner's suit he will then bid spades, which by the process of elimination is the right suit
All these overcalls are based on vulnerability, and trick taking....if you have lots of spades...perhaps 6/7 and an outside ace, you have a good trick taking hand. It also matters whether you are in front of or behind the no trump bidder. One would not probably do it without 8+ points.....you are really just trying to make it difficult for the opponents to find where they should play the contract.
Remember: DONT = disturb the opponents notrump :)
X = single suit. Partner may pass for penalty, or bid 2c
to
remove penalty, then doubler bids his suit, or
passes
if he holds clubs.
2c = C + H
2D = D + H
2H = H + S
2S = S and a minor, parnter may then bid 2n to ask for
minor
2N = C + D
3C, 3D, 3H, 3S show a three suited hand, with a singleton
or
void in the bid suit....however some partners play this
as natural, so MUST be discussed beforehand.