Vint.ee Bridge Bidding System

The system is based on picture points (pp). Picture points are calculated as follows: Ace - 4 points, King 3, Queen 2 and Jack 1 point.
According to the picture points and the length of the suit, the vint.ee computer offers the following logic:

Opening bid

1 (or Kontra(X) if the opponents' previous bid no longer allows 1 to be offered) - 17+ pp
1 or 1 - 11-16 pp and at least 5th of the corresponding suit
1NT - 14-16 pp, the shortest suit is at least 2nd and the longest suit is 5th
1 - 11+ pp and does not meet any of the previous conditions
2 - 6-10 pp and at least 6th of the suit with a picture
2NT - 6-10 pp and both at least 5th of the low suits
3 - 6-10 pp and 7+ of the suit with a picture

Answering the opening bid

Open 1 or Double
- 2 or 2 - 4-6 pp and matching 6+ of the highest suit
- 1 - 0-7 pp
- 1 or 1 - 8+ pp and matching 5+ of the highest suit
- 2 or 2 - 8+ pp and matching 5+ of the lowest suit
- 1NT - 8+ pp and even split (no singles)
Open 1
- 2 - 11+ pp and 5+ suit
- 1 or 1 - 6-10 pp and 4+ of the highest suit
- 3NT - 14-16 pp, 2NT - 11-13 pp, 1NT - 6-10pp and even split
Opening 1 or 1
- If a supporting suit was answered, the even picture points depend on the answer's height: (5: 18pp, 4: 14pp, 3: 10pp, 2: 6pp)
- 2 - 11+ pp and 5+ or 9-10 pp and 6+ respectively new suit
- 1 response to 1 bid shows 6+ pp and 4+ suit
- 3NT - 14-16 pp, 2NT - 11-13 pp, 1NT - 6-10 pp
Open 1NT
- 3 - 8+ pp and corresponding 5+ suit
- 2 or 2 - 6-7 pp and corresponding 5+ of the highest suit
- 2 - 8+ pp and at least one 4 of the highest suit (Stayman)
- 6NT - 17+ pp, 3NT - 9-16 pp
Avang 2
- 5th floor supporting mast - 18+ pp and 3+ mast
- 4th floor supporting mast - 14-17 pp and 3+ mast
- 3rd floor supporting mast - 10-13 pp and 3+ mast
- 3rd floor new mast - 15+ pp and 5+ mast
- 2nd floor new floor of the highest suit - 12 - 14 pp and 5+ suit
- 3NT - 15+pp, 2NT - 12-14 pp
Opening 2NT
- 5 or 5 - 15+ pp and corresponding 4+ of the lowest suit
- 3 or 3 - 15+ pp and corresponding 6+ of the highest suit
- 3 or 3 - up to 15 pp and the longest of the lowest suit
Opening 3
- Game (4th floor of the highest suit or 5th floor of the lowest suit) - 15+ pp and 2+ supporting suit or up to 15 pp and 4+ supporting suit
- 3NT - 15+ pp

Stayman convention

Used to ask for the division of high suits. Responses to 2

2NT - Both 4-high suits
2 - 4-high strum
2 - 4-high pot
2 - No 4-high suit

Ask for aces

In order to find out the number of aces in partner's hand, an artificial bid of 4NT has been invented. The responses to this bid are:

5 - 0 or 4 aces
5 - 1 ace
5 - 2 aces
5 - 3 aces

Asking for Kings

In order to find out the number of aces in partner's hand, an artificial bid of 5NT has been invented. The responses to this bid are:

6 - 0 or 4 kings
6 - 1 king
6 - 2 kings
6 - 3 kings

Using doubles

Doubles are usually used in the following cases

When opening a bid with 17+ pp and cannot bid 1
When answering a opening bid with 8+ pp and there is no possibility to bid according to the system (opponents have made a mid-bid)
When our line has more than 20+pp and opponents have bid a game
When our line has more than 20+pp and opponents have bid a 1-2-deck no-trump contract