A weak two bid is an opening of 2♦, 2♥ or 2♠ that shows a six-card suit and a weak hand, about 5 to 10 high card points (SAYC allows up to 11). It is a preempt: it takes bidding space away from the opponents while telling partner almost everything about your hand in one call.
Weak twos are standard in 2/1 Game Force, the bidding system this article assumes, and in SAYC: in both, 2♣ is the only strong two-level opening. You can see what 2♠ means in every system. Many Acol players use them too, and in Europe 2♦ is often the Multi instead.
How Weak Two Bids Work
A weak two does two jobs at once:
- It preempts. The opponents must start their auction at the two or three level, often without room to find their best fit.
- It describes. Partner knows your strength within a few points and your suit length exactly, so partner can judge both offense and defense.
Partner is captain after a weak two. You have told your story; you bid again only when partner asks.
Requirements for a Weak Two Bid
| Requirement | Standard guideline |
|---|---|
| Length | Exactly six cards (a strong five in third seat, a weak seven at favorable vulnerability by agreement) |
| Strength | About 5-10 HCP (SAYC: 5-11) |
| Suit quality | Two of the top three honors, or three of the top five, especially when vulnerable |
| Side suits | No four-card major on the side; no void |
| Seat | First and second seat sound; third seat looser; fourth seat a sound hand, not a preempt |
The old rules also said "no outside ace". Modern players ignore that one more often, but a side ace and a strong suit together make a hand closer to a one-level opening.
Rule of ThumbA weak two = six cards, about 5-10 HCP, a suit you are happy for partner to lead, and no four-card side major.
Vulnerability. Not vulnerable against vulnerable opponents, you can be aggressive: a ragged six-card suit is fine. Vulnerable against not, be strict: the penalty for going down two doubled (500) is bigger than the opponents' partscore. Seat. In third seat, after partner passed, the opponents probably have game, so open weak twos more freely. In fourth seat a weak hand simply passes; a two-level opening there shows a sound hand of about 11-14 points.
Responding to a Weak Two
Responder decides the contract. The usual tools:
| Response | Meaning |
|---|---|
| Pass | No game interest and no reason to raise |
| Raise to three | Preemptive, usually three-card support; opener must pass |
| Raise to game | To play: either a strong hand or a preempt with four or more trumps |
| 2NT | Forcing, asks about the hand: a feature or Ogust (see what 2NT means in every system) |
| New suit | Natural, five or more cards, forcing one round in 2/1 and SAYC |
| 3NT | To play: usually stoppers and a fit honor so that opener's suit runs |
To judge game, use the Rule of 17: add your HCP to the number of cards you hold in partner's suit. With 17 or more you have game interest. Raises follow the law of total tricks: three trumps raise to three, four or five trumps raise to game.
A raise of partner's weak two is never an invitation. It is a preempt. To invite, bid 2NT.
Example Hands
Openings. You are the dealer, nobody vulnerable.
- ♠KQJ974 ♥85 ♦J62 ♣73 (7 HCP): 2♠. A textbook weak two: strong suit, nothing outside.
- ♠A3 ♥KJ10875 ♦Q42 ♣84 (10 HCP): 2♥, a maximum. Some players open 1♥ with the side ace; both are reasonable.
- ♠Q87532 ♥4 ♦K62 ♣J83 (6 HCP): pass in first seat when vulnerable. At favorable vulnerability, or in third seat, 2♠ is fine.
- ♠K106532 ♥AQ64 ♦7 ♣84 (9 HCP): pass. With four hearts on the side, a 2♠ opening can lose a heart fit. Many players open it anyway at favorable vulnerability; know the risk.
Partner opens a weak 2♠. Your call?
Responses. Partner opens 2♠, nobody vulnerable.
- ♠A83 ♥962 ♦Q10854 ♣92 (6 HCP + 3 spades = 9): 3♠. No game, but nine trumps make the three level a good preempt.
- ♠K7 ♥AQ6 ♦AK83 ♣J972 (17 HCP + 2 spades = 19): 4♠. The ♠K fills partner's suit and you have three quick tricks outside.
- ♠Q5 ♥AJ4 ♦KQ72 ♣KJ63 (16 HCP + 2 spades = 18): 2NT to ask. Game depends on partner's suit and range.
- ♠- ♥KQJ1086 ♦A9653 ♣64 (10 HCP): pass. A void in partner's suit is a misfit. Bidding 3♥ is forcing and starts a long auction that will probably go too high.
Common Mistakes
- Opening with a five-card or seven-card suit by default. Partner raises on the assumption of six. Keep to six unless your partnership agrees otherwise.
- Bidding again after partner passes or raises. Partner knows your hand. Do not "show the extra point".
- Raising "to invite". A raise is preemptive. Use 2NT to explore.
- Rescuing. A new suit is forcing in most methods, so it cannot be a rescue.
- Opening a weak two in fourth seat. With a weak hand, pass the deal out.
- Opening on a broken suit when vulnerable. ♠J86532 at unfavorable vulnerability is an invitation to a 500 or 800 penalty.
The Full Weak Two Tree
| Auction | Meaning |
|---|---|
| 2♥ | Six hearts, about 5-10 HCP |
| 2♥ - Pass | No game, no reason to raise |
| 2♥ - 3♥ | Preemptive raise, opener passes |
| 2♥ - 4♥ | To play |
| 2♥ - 2♠ / 3♣ / 3♦ | Natural, five or more cards, forcing |
| 2♥ - 2NT | Forcing ask: feature or Ogust |
| 2♥ - 2NT - 3♥ | Minimum (feature method) |
| 2♥ - 2NT - new suit | Maximum with an ace or king in that suit (feature method) |
| 2♥ - 3NT | To play |
Opener's answers to a new suit: raise with three-card support or a doubleton honor, rebid the suit with a minimum and no fit, or bid a new suit or notrump with a maximum.
TipWeak twos appear in many BridgeDummy bidding puzzles, from both sides of the table. You are South, you choose the call, and every option is played out double dummy on many deals that fit the auction, so you learn which weak twos pay off and which go for a number.
Practice: Weak Two Bids
You are the dealer. Nobody vulnerable.
You are the dealer, nobody vulnerable. What do you open?
Your hand:
For practice at the table, the BridgeDummy Bidding Room deals random hands that you bid with EPBot robots, alone or with a partner. Related reading: preempts for the three level and higher.