In the card game contract bridge, a takeout double is a low-level conventional call of "Double" over an opponent's bid as a request for partner to bid his best of the unbid suits. The most common takeout double is after an opponent's opening bid of one of a suit where the double shows a hand with opening values, support for all three unbid suits (at least three cards in each) and shortness in the suit doubled (preferably, no more than two). Normally, the partner of the doubler must bid his best suit but may pass if (a) his right hand opponent intervenes or (b) on the more rare occasions when his hand is such that he wishes to convert the takeout double to a penalty double.
Commonly double is considered takeout whenever one of the following conditions is met (but see balancing double below):
Most common requirements to make a takeout double are:
The most common treatment is that the fewer high card points the hand possesses, the more strict are the distribution requirements (i.e. opponent's suit(s) shorter and unbid suits longer). Most players play that hands with 17-18 high card points should double regardless of distribution (unless the hand is suitable for 1NT overcall). Also, more high-card strength is required when opponents have bid on higher levels (e.g. preempted). Most players play that a double up to the level of 4♥ is takeout, while doubles on higher levels are for penalties or "cooperative" (i.e. the partner is supposed to pass unless his distribution and/or strength indicates that playing a contract of their own on a higher level is a better prospect).
|1) ♠ Q974 ♥ 9 ♦ AJ93 ♣ KJ85||This hand is a minimal takeout double when the opponent opens 1♥. With other opening bids, it should be passed though. Also, if the opening bid was 3♥, the hand would be not strong enough to double.|
|2) ♠ KQ83 ♥ A52 ♦ 10 ♣ AJ1062||If opponents have bid 1♦ - 1♥, the takeout double shows unbid suits (spades and clubs)|
|3) ♠ KJ63 ♥ AQ2 ♦ A84 ♣ Q93||With 16 balanced points, this hand is suitable for 1NT overcall over any opening bid rather than for a double.|
|4) ♠ KQJ1063 ♥ AK72 ♦ A4 ♣ 6||With 17 points and excellent spade suit, this hand should double RHO's opening bid rather than overcall spades. Whatever partner bids, a subsequent bid of spades will indicate a stronger hand than a simple overcall.|
|5) ♠ 8 ♥ AQ1094 ♦ KJ107 ♣ A83||Over an opening bid of 1♠ this hand can double or overcall 2♥ depending on style and agreements. However, over an opening bid of 1♥, it should pass, expecting to double later opponents' heart or notrump contract for penalties.|
Normally, (assuming the RHO passes) the doubler's partner should make a descriptive bid indicating a long suit of his own and the high-card strength:
If the RHO bids, the doubler's partner is not forced to make a bid anymore; if one is made, it is a free bid, indicating a certain minimum strength and/or length in the suit bid (e.g. 6-7 points).
The strength requirements above are lowered when the partner is known to be stronger (e.g. an opponents' preempt is doubled), and raised when partner can be weak (as in protective position).
Double can be for takeout even in later rounds of bidding. As before, it denotes support for unbid suits and, often, extra values. In general, any low-level double after opponents have bid a suit (especially if they have found a fit) and partner has passed is generally played for takeout:
|1) 1♣ - (1♠) - pass - pass; Dbl||This type of is referred to as "reopening double", and shows shortness in spades and support for other suits|
|2) 1♦ - (1♠) ; Dbl||Shows 4+ cards in all unbid major(s), or 4+ cards in each minor if both bid suits are majors. See negative double.|
|3) 1♣ - Dbl - pass - 1♠; Dbl||Again, the opener has shortness in spades and support for other three suits.|
|4) 1♣ - (1♥) - pass - (2♥); Dbl||This shows shortness in hearts, but the opener must have extra strength, as the responder is forced to bid on level 2 or 3.|
|5) (1♦) - 1♠ - (2♦) - pass; (pass) - Dbl||The overcaller shows shortness in diamonds, and at least 3 cards in hearts and clubs, with some extra values for the overcall.|
|6) (1♥) - Dbl - (2♥) - pass; (pass) - Dbl||The original doubler shows extra values and/or extreme shortness in hearts.|
Distribution and strength requirements for a takeout double are lowered in situations when opponents' previous auction indicates that the partner has high-card strength, but was likely unable to take an action of his own because his distribution was not suitable for a double or an overcall.
A protective double can be made with as little as 8 high card points if both the RHO and the partner have passed the opening bid. Such a situation indicates that partner has strength, but was unable to act, perhaps because he had a hand like 1) in the table above:
South, holding ♠ Q863 ♥ 84 ♦ A85 ♣ K1054 can now double, expecting to find partner with strength and likely length in hearts, allowing him to pass for penalties or make a bid.
A balancing double occurs in later rounds of bidding, in situations where opponents have found a fit, but stopped on a low level, placing some points with the partner. It is normally done with a relatively weak hand and the distribution need not be perfect.
South, holding ♠ Q863 ♥ 984 ♦ K1085 ♣ AJ was not strong enough to double in the first round. However, he can expect the partner to have shortness in hearts and likely 4 cards in spades or diamonds, and thus make a balancing takeout double. Such doubles are more frequent on matchpoint scoring, where even a penalty of −100 for the failure to make 2♠ can be profitable against −110 or −140 that the opponents could score in 2♥.
Reopening double is a form of takeout double bid by the opener himself, after his left-hand opponent has overcalled and partner has passed. As normal takeout double, it shows support for unbid suits:
West's double denotes shortness in spades, and invites partner to bid his best suit. A suitable hand would be e.g. ♠ 7 ♥ AJ85 ♦ K63 ♣ AQ1052. The partner should bid his longest suit on the lowest level with approximately 0-6 points, 1NT with 5-7 points and stopper in spades, (as he would bid 1NT immediately with 8-10 points), and jump in a suit with 7+ points. Finally, he can pass for penalties with 5 or more cards in spades.
Reopening doubles once showed extra values as well. With adoption of the negative double, however (a takeout double by responder), responder must pass with length and strength in the opposing suit. In order to protect against such situations, opener is obliged to double even with thin values, whenever his distribution is suitable. Some pairs even require opener to act somehow; responder's pass is forcing.