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For example, on the sequence 1 ♣-1 ♠ (with or without opponent's interfering);1NT-2 ♣;2 ♦,2 ♥ will show an invitational hand with minimum five spades and four hearts, 2 ♠ an invitational hand with minimum five spades (in which case one does not have four hearts) or possibly six spades with or without four hearts. 2NT will show a balanced invitational hand, 3 ♣ typically an ...
Like SAYC, BBO basic depends upon hand evaluation using the high card point (HCP) method. Hand shape adjustments are made for long suits (1 point additional for every card longer than 4 in a suit), when bidding a new suit, and for short suits when showing support for partners bid (5 for a void, 3 for a singleton, and 1 for a doubleton). [2]
The general idea behind this system is to get the information about the shape of the hand (balanced or unbalanced) across to partner in the first bid. The opening bids in boring club can be summarised as follows: 1 ♣: Balanced (12-18 hcp), no five card major; 1 ♦: 4+ ♦, unbalanced (10-21 hcp) 1 ♥: 5+ ♥ (10-21 hcp) 1 ♠: 5+ ♠ (10-21 ...
The underlying premise of LTC is that if a suit is evenly distributed, i.e. three players hold three cards in the suit and one player holds four, a maximum of three losers can be assumed in any one suit held by the partnership and, in turn, the maximum number of losers held by the partnership in all four suits is 24 (three in each of the four suits in each of two hands, i.e. 3 x 4 x 2 = 24).
For example, on the sequence 1 ♣-1 ♠ (with or without opponent's interfering);1NT-2 ♣;2 ♦,2 ♥ will show an invitational hand with minimum five spades and four hearts, 2 ♠ an invitational hand with minimum five spades (in which case one does not have four hearts) or possibly six spades with or without four hearts. 2NT will show a balanced invitational hand, 3 ♣ typically an ...
W E ♠ K 10 3 ♥ A Q ♥ K J 9 4 ♦ K Q 3 2 ♦ A J ♣ A 4 3 ♣ 8 7 6 5 ♠ A Q J W E ♠ K 10 3 ♥ A Q 3 2 ♥ K J 9 4 ♦ K Q ♦ A J ♣ A 4 3 2 ♣ 8 7 6 5 Both East hands are exactly the same, and both West hands have the same shape, the same HCP count, and the same high cards. The only difference between the West hands is that two low red cards and one low black card have been ...
1 ♦ is used on all weak hands, 0-7 HCP. 1 ♥ shows 8 or more HCP and an unbalanced hand with no major (or 22 or more HCP, a balanced hand with no major). 1 ♠ is "mini-notrump" with 8-12 HCP — denying a 4-card or longer major; 1NT shows 13-18 HCP — denying a 4-card or longer major; 2NT shows 19-21 HCP — denying a 4-card or longer major.
The responder will have five points or more and an unbalanced hand. The responder bids 3 ♣, which asks opener to bid his four-card suits in ascending order. If clubs are the only four-card suit, the opener bids 3NT. If there are two four-card suits (one being clubs), the opener bids the higher first and then 3NT for the clubs if no fit is found.