System Summary Form (SSF), 2021 Open USBC

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Jian-Jian Wang-Jiang Gu-Hailong Ao


Team: Gu Last Updated Apr 2, 2021 at 22:56
Players: Hailong Ao - Jiang Gu

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Bids that Require Advance Preparation

1C, Natural or balanced 11-13 or 17-18 (even with 2C5D), transfer response
1C, P, 1S 5+D GF or 4+C up to 11 or 5+C4M GF.
1C, P, 2C 6+D up to 12
1C, P, 2D 4+C GF
1D, Natural unbalanced
1D, P, 1!M 4+OM
1D, P, 2C GF with either minor
1D, P, 2D 6+M 6-9
1m, P, 2H invitational balanced or m
1m, P, 2S mixed raise in m
1H, P, 2S = 4+H GF
1S, P, 3C = 4+S GF
1M, P, 2X, 2H 4+OM
1M, P, 2X, 2S 6+M
1M, P, 2N Balanced GF
1NT: 14-16 modified Stayman
1NT, P, 2C, P, 2H 3S4+H max or 4+S
1NT, P, 2C, P, 2S 4+H
1NT, P, 2S size weak C or balanced inv
2D: 19-20 balanced
2NT: 21-22
2D over 1NT = Major 1-suiter

General Bidding Style

2/1 GF, 5-Card Majors, transfer response over 1m open.
May open light and respond with very weak hand.
1 level overcalls 6+ HCP. 2-level sounder.
1M, P, 2D/H = GF promises 5+
1M, P, 2C = GF 5+ or 16-17 2+
1NT 14-16 could have 5-card Major (common) or 6-card minor (rarer).

Preempts: wide range (could be good or bad)

Opening Leads AND Leads in the Middle of the Hand

vs NT: 4th best, we lead second or top from bad suits
vs NT: Rusinow honor lead if from 4+-card suit except A from AKxx(x)
vs NT: K is power lead.

vs Suits: 3rd from even or 3, 5th from odd, but may lead high from nothing in partner's raised suit. "Impossible" lead could show side suit preference, including spot lower than 5th best.

vs Suits: from AKx(+), A for attitude and K for count
Spot leads normally attitude during hand (rarely low=odd, high=even for count)
Leading highest spot for ruff may warn about overruff.

Defensive Signals

Upside Down Attitude and Normal Count Signals (but upside down count when pd leads a side A vs suit).
Signaling priority normally: Attitude, Count, Suit-Pref (may vary).
Count in partner's suit if dummy wins trick-1 vs NT.
Suit preference if singleton in Dummy, obvious middle card is for continuation to tap dummy.
Occasional suit-pref in trumps.
(rev)Smith Echo vs NT, except in obvious count situation.
vs suit: middle-card encourage when dummy is short