Robot Bidding System #1 (SAYC)

Open bid

Bid
Meaning
1♣ 12-21 HCP, 3+ cards
1 12-21 HCP, 4+ cards or 4-4-3-2
1 12-21 HCP, 5+ cards
1♠ 12-21 HCP, 5+ cards
1NT
15-17, balance hand, may have five card major/minor, no singleton or void
2♣ 22+ HCP, any distribution except 3NT, forcing
2 8-10 HCP, 6 cards
2 8-10 HCP, 6 cards
2♠ 8-10 HCP, 6 cards
2NT
20-21 HCP, balance hand
3♣ 8-10 HCP, 7 cards
3 8-10 HCP, 7 cards
3 8-10 HCP, 7 cards
3♠ 8-10 HCP, 7 cards
3NT
25-27HCP, balance hand

Responding to One of a Minor

1♣
Bid
Meaning
Pass
0-5 HCP
1/1/1♠ 6+ HCP, 4+ cards, force 1 round
(1 may be as low as 2 cards when holding 18+ HCP, 3-3-2-5 hand)
1NT 6-10 HCP (may be 11-12 HCP with 3-3-3-4 hand)
2♣ 6-10 HCP, 5+ cards, no 4-card major
Jump shift 19+ HCP, 5+ cards, game forcing and slam invitational
2NT
13-15 HCP, balance hand, no 4-card major
3♣ 11-12 HCP, 5+ cards, no 4-card major
(with 3-3-1-6 hands, may be up to 18 HCP)
3NT
16-17  HCP, balance hand, no 4-card major

1
Bid
Meaning
Pass
0-5 HCP
1/1♠ 6+ HCP, 4+ cards, force 1 round
1NT
6-10 HCP
2♣ 11+ HCP, 4+ cards, normally no 4-card major, force 1 round (may be as low as 3 cards when holding 18+ HCP and 3-3-4-3 hand)
2 6-10 HCP, 4+ cards, normally no 4-card major
Jump shift
19+ HCP, 5+ cards, game forcing and slam invitational
2NT
13-15 HCP, balance hand, no 4-card major
3 11-12 HCP, 4+ cards, no 4-card major
3NT
16-17  HCP, balance hand, no 4-card major

1♣ /-2/3NT
Bid Meaning
PASS
To play, minimum HCP, balance hand (N/A for 2NT response)
3NT
To play, balance hand
4♣ Geber
4NT
Invitation to 6NT
5NT
Invitation to 7NT
6NT
To play, balance hand
Rebid
5+ Cards, unbalance, minimum HCP, let responder to choose
New Suit
Slam interest, unbalance, cue-bid or 4+ cards, forcing.

Responding to One of a Major

1
Bid Meaning
PASS
0-5 HCP
1♠ 6+ HCP, 4+ cards, force 1 round
1NT
6-10 HCP
2♣/2 11-18 HCP, 4+ cards
2 6-10 HCP, 3+ cards
2♠ 19+ HCP, 5+ cards
2NT
Jocoby 2NT, 13+ HCP, 4+ suit
3♣/3 19+ HCP, 5+cards
3 11-12 HCP, 3+ cards
3NT
15-17 HCP, balance hand
4 5-9 HCP, 5+ cards, good distribution

1♠
Bid Meaning
PASS
0-5 HCP
1NT
6-10 HCP
2♣/2 11+ HCP, 4+ Cards
2 11+ HCP, 5+ Cards
2♠ 6-10 HCP, 3+ Cards
2NT
Jocoby 2NT, 13+ HCP, 4+ ♠suit
3♣/3/3 19+ HCP, 5+ Cards
3♠ 11-12 HCP, 3+ Cards
3NT
15-17 HCP, balance hand
4♠ 5-9 HCP, 5+ cards, good distribution

Responding to NT


1NT
Bid
Meaning
PASS
0-7 HCP, no good suit
2♣ Stayman, usually 8+ HCP, ask for major
2/2 Jacoby transfer, transfer to 2/2♠
(A transfer jump to 3/3♠ is good support, 17 HCP, 4+ cards)
2♠ Weak, 6+ minor cards, request partner to bid 3♣
2NT 8-9 HCP, balance hand, no 4-card major, invitation to 3NT
3♣/3 7- HCP, 6+ semi-solid cards, invitation to 3NT (non-SAYC standard)
3/3♠ 9+ HCP, 6+ semi-solid cards, game forcing and slam invitation
3NT 10-15 HCP, balance hand, no 4-card major
4♣ Gerber, ask ace (not implemented)
4NT
16-17 HCP, balance hand
5NT
20-21 HCP, balance hand
6NT
18-19 HCP, balance hand
7NT
22+ HCP, balance hand

If an opponent doubles, all conventional responses are "on.". For example:
    1NT - (X) - 2♣ = Stayman
    1NT - (X) - 2 = transfer to heart

If an opponent bids over your 1NT opener, conventional responses like Stayman and transfers are "off." Bids are natural except for a cuebid, which may be used with game forcing strength as a substitute for Stayman.

2NT
Bid
Meaning
PASS
0-4 HCP, no good suit
3♣ Stayman, 5+ HCP, ask for major
3/3 Jacoby transfer, weak transfer to 3/3♠
3♠ Weak, 5-5+ minor cards, request partner to bid 4♣
3NT
5-11 HCP, balance hand
4♣ Gerber, ask ace
4NT
12 HCP, balance hand, invite to 6NT
5NT
16 HCP, balance hand, invite to 7NT
6NT
13-15HCP, balance hand
7NT
17+ HCP, balance hand

3NT
Bid
Meaning
PASS
0-5 HCP, no good suit
4♣ Stayman
4/4 5+ cards, transfer to 4/4♠
4NT
6-7 HCP, invite to 6NT
5NT
10-11 HCP. invite to 7NT
6NT
8-9 HCP, sign off
7NT
12+ HCP

Response to a 2C Opener

2♣
Bid
Meaning
2 0-7 HCP (Negative) or waiting (such as 4-4-4-1 with 8+ HCP)
2/2♠/3♣/3 8+ HCP, 5+ card, game forcing (2NT if the suit does not have 2 out of 3 top honors and balance hand)
2NT
8+ HCP, balance hand, game forcing

2♣-2
Bid
Meaning
2/2♠/3♣/3 5+ card, force 1 round
2NT
22-24 HCP (all system are on, 3C:Stayman, 3D/3H: transfer)
3/3♠/4♣/4 Self-supporting holding in that suit (game forcing)
3NT
28-30 HCP
4NT
31-32 HCP
5NT
33-34 HCP
6NT
35-36 HCP
7NT
37+ HCP

2♣-2/2♠/3♣/3
Bid
Meaning
3♣/3/3NT 0-4 HCP, double negative. (For 2,2♠/3♣/3 response respectively)

Response to a Weak 2 Opener

Bid
Meaning
Raise
Preemptive
New Suit
13+ HCP, good quality 5+ cards and preferred 6, force 1 round.
Opener Rebid
Raise: 3+ cards or QX support.
New suit: Maximum, show feature has at least KX.
NT: Maximum, good quality open suit (likely AKQ as it has no side feature).
Rebid suit: no better option.
2NT
Forcing (even RHO bid), asked opener to further describe the hand.
Opener Rebid
Rebid open suit: Minimum
New suit: Maximum, show feature with A or protected K/Q.
3NT: Maximum, lack of feature but solid in open suit.
3NT
To play.

Response to a Weak 3 Opener

Bid
Meaning
Raise
Defensive, should be passed.
3/3♠ (open 3♣/3) 6+ cards, forcing to game in the major or 3NT.
3NT
To play
4NT
Blackwood
5NT
Grand Slam Force (With 2 or more trump controls, responder makes a Grand Slam call in the trump suit.  Otherwise, the responder signs off in a Small Slam.)

Jacoby 2NT

1/1♠-2NT
Bid Meaning
3-level new suit
Void or signleton
4-level open suit
12-14 HCP
3NT
15-17 HCP, balance hand
3-level open suit
18+ HCP
4-level new suit
5+ cards, semi-solid

Opener Rebid

Minimum Hand (12-15 HCP)

Medium Hand (16-18 HCP)

Max Hand (19-21 HCP)

Reverse

A reverse by opener is non-jump rebid at the two-level in a new suit that is higher ranking than opener's original suit. 17+ points (may be 15 with good hand),.Usually with 5 cards in the opening suit and 4+ cards in the new suit. Forcing for one round unless the opponents intervene.

Eg. 1 -1; 2 or 1 - 1; 2

Subsequent bidding by responder

Sign off in a partscore

Invitational bids

Forcing Bids:

Fourth Suit Forcing (FSF)

Bid the only unbid suit at the two-level or above is forced for one-round. The bidder does not guarantee the quality of the bid suit.

The opener's responses to FSF are:

If the FSF caller:

Blackwood Intervention

Upon an intervention after Blackwood 4NT/5NT, DEPO is used to reply Blackwood which double denotes a hand with even number of Ace/King (0, 2, 4) while pass means  odd number of Ace/King (1, 3).

Overcalls

Bid Meaning
1-level
8-15 HCP, normally 5+ cards (major may have 4 good cards), non-forcing
2-level
10-15 HCP, 5+ cards, non-forcing
1NT
15-18 HCP, contains 1 stopper in opener's suit
Jump overcall
Preemptive, same as preemptive open bid

Responding to Overcalls

In general, one responds to a one-level overcall in a suit as if it were an opening bid.
When response to 1NT overcall, Stayman is on and transfer is off.

Michaels and the Unusual Notrump

Direct cuebid (Michaels) - when opponents has only bid one suit and partner has not bid.
Cuebid
Meaning
on minor
5-5 or better in major suit; 6-10 HCP or 16+ HCP.
on major
5-5 or better in unbid major + a minor; 6-10 HCP or 16+ HCP.

Responding to Micheal:

Unusual 2NT, after opponents open, a 2NT overall shows at least 5-5 in the two lowest unbid suits. The strength is 6-10 or 17+ HCP, at most 7 losing trick count in favorable vulnerability, or else 6 LTC.
 Eg. (1)-2NT or ((1)-Pass-(1♠)-2NT

Responding to Unusal NT

Cuebid Opponent's Suit

Cuebdding right-hand opponent's suit shows values for game without  clear direction for the moment. This is often used to show a game-forcing raise:

1-(2)-3 = game force; usually a raise;

Overcalling their NT Openings

Cappelletti is adopted to defend against 1NT opening.

Bid
Meaning
Double
Shows an equivalent hand as 1NT open bid.
2 Unknown one suited hand,
Advancer
- Pass: with at least 6+ good club and no value in other suit.
- 2: Ask partner to name his suit.
- 2/2: Strong 5+ cards suit.
- 2NT: 11+ HCP, reasonable support for all four suits.
Note: With (1NT)-2♣-(X): A redouble means 7+ HCP,  well support for any suit partner might have, and invite partner to compete to the three-level.
2 Both major suits.
Advancer
- Pass: with at least 6+ good diamond, no fit in major suits.
- 2/2: a simple preference bid.
- 2NT: asks partner to bid his better minor.
- 3C: 6+ good clubs, no fit in major suits.
- 3/3: an invitation to game with 4+ cards.
2/2 Named major and unnamed minor suit.
Advancer
- Pass: to play.
- 3/3: raise, 7-10 HCP.
- New suit: natural and non-forcing.
- 2NT: ask for partner's minor. If advancer follows with a raise to three of the major, it is invited to game in the major with 10-12 HCP.
2NT
Both minor suits
Overall
Natural

Except for double, a holding of less than 15 HCP and reasonable shape. With more, the overcaller might  well begin with a double.

Responder's Action after an 1NT intervention

Bid
Meaning
Double
Negative at the two and three level (Not implemented)
Two level suit
5+ cards, to play
Three level suit
5+ cards, game forcing
2NT
Lebensohl, relay to 3♣ (Not implemented)
Responder's Rebid
- Pass with a weak hand and long clubs.
- Any suit below the rank of the overcall is a signoff.
- Any suit above the rank of the overcall is invitational.
- Cue bid is Stayman (Not implemented)
- 3NT a stopper in enemy suit
Immediate cue bid
Stayman (Not implemented)
3NT
Denies a stopper in enemy suit (Not implemented)

After artificial overcalls showing two-suiters where only one of the suits is known, lebensohl is used and the known suit serves the same function as a naturally overcalled suit.  If both of the suits are known strong hands can use unusual vs. unusual to show responders suits.  Against an artificial double or 2 bid to show a single suit, responder can use lebensohl immediately, ignoring which suit was to be shown. Or, if interested in what the suit is, can pass and over the identified suit use all of lebensohl.

Doubles

Doubles of suit bids are for takeout over opening partscore bids and are for penality over opening bids at the game level or higher.

Bid
Meaning
Takeout double
1. 12+ HCP, shortness in the suit(s); shortness in the suit(s) bid by opponents; reasonable support for the unbid suit.
2. 17+ HCP, has a suit with 5+ card.
3. 19+ HCP, balance hand, rebid with NT.
Double  an opening 1NT
Penalty . 15-17 HCP, balance hand (same as open 1NT). Partner bid, if has a long suit (5+ cards)
Negative double
Negative doubles are for responder and employed though 2♠ and show values in unbid suits. If RHO has overcalled in 1-level: 6+ HCP, 2-level 8/9 HCP, 3-level 10+. HCP. (Though players usually made with 7-9 HCP with no upper limit.)
Eg.
1-(2)-X (Shows 4-4 or better in major suits)
1-(1)-X (Shows 4 spades. A bid of 1♠ promises a 5+ cards)
1-(1♠)-X (Shows 4+ hearts)
Reopen Double
Double by the opener after an overcall with partner pass. Usually has singleton or doubleton in opponents suit. (A void will trend to bid instead of a reopen double)
Eg. 1-(2)-P-(P)-X or 1-(P)-P-(2)-X
Response:
A pass is a penalty based on Rule of Nine (level+suit length+honor length>=9) else partner must bid if opponents has passed.

Response to takeout doubles are:

Bid
Meaning
Minimum bid
4+cards, 0-9 HCP. May pass after intervening, so slightly stronger 5-9 HCP.
1NT
6-10 HCP, balance and has stopper in opponent's suit.
Jump raise
10-12 HCP. 4+ cards.
2NT
10-12 HCP, balance and has stopper in opponent's suit
Cuebid
1, 13+ HCP, game forcing.
2. 10-12 HCP, support for any unbid suit, forcing 1 round.
3NT
To play, 13-16 HCP.
Double jump
Weak by good shape, preemptive
Pass
Rare, at least 5 card in opponent's bid suit. Well believe that the 1-level contract will be defeated???

Rebids by takeout doubler after minimum bid:

Bid Meaning
Pass
16 or less HCP
Raise
4+ cards, 17-18 HCP. May down to 13-18 HCP if partner bid after intervene.
Jump raise
4+ cards, 19-21 HCP
New suit
5+ cards, 17-20 HCP
Jump new
6+ cards, self-sufficient hand
1NT
18-19 HCP, balance, has stopper in opponent's suit.
2NT
19-21 HCP if non-jump, 20-22 if jump, has stopper in opponent's suit.
3NT
shows 9 tricks (not implemented)
Cuebid
21+ HCP, slam interest

Responses to negative double:

Bid Meaning
Minimum rebid
16 or less HCP
Jump rebid
16-18 HCP
Cuebid
19+ HCP, game forcing
Pass
Penality (Rare)

Defense to Weak Two Bids

Bid
Meaning
Double
Takeout, 14HCP+, 4+ cards for unbid suits (suit with honors may have 3 cards, but usually 4 cards for unbid major).
If partner has some length in enemy suit, may convert to a penalty double.
With 0-7 HCP, advancer bids at 2 level if possible. Otherwise bid 2NT (Lebensohl).
A jump to the three level is a strong game invitation (opening hand strength)
A minimum response at the three level promises 8-11 HCP.
Doubler Rebid
New suit promised  5+ cards with qaulity.
Minimum Overcall
10-18 HCP, 5+ cards. In case of 5 cards, must be good suit. With 19+ HCP, 5 cards, double then rebid the suit.
Jump Overcall
16+ HCP, 6+ cards.
2NT
16-18 HCP, balance hand, has stopper in opponent's suit.
3NT
21-22 HCP, balance hand, has stopper in opponent's suit. With 19-20 HCP or 23+ HCP, double then bid 2NT or 3NT.
Cuebid
Strong hand, 7 plus running tricks. forcing. Ask partner to bid 3NT if has stopper in opponent's suit.

Defense to Weak Three Bids

Bid
Meaning
Double
Takeout, 13HCP+, 4+ card for unbid suits (suit with honors may have 3 cards, but usually 4 cards for unbid major). Perhaps a little less in the passout seat.
Minimum Overcall
10-15 HCP, 6+/7+ cards (Non-Vul/Vul). 6-7 winning tricks, non-forcing
Jump Overcall
12+ HCP, 8+ cards, self sufficient hand.9+ winning tricks or 2-3 losing tricks.
3NT
17+ HCP, has stopper in the opener's suit and a good minor suit.
Cuebid
17+ HCP, Micheals (Two unbid majors or one unbid majors and one minors).

Lebebsohl after Weak Two Bids

After a takeout double for weak two, if partner has 0-7 HCP, bid 2NT.  Doubler bids 3C and and pass for any correction.

Balancing

Eg. (1)-Pass-(Pass)-?

Those made in the passout seat - mean much the same as their direct-seat counterparts, bu can be lighter:

Notes:

  1. Bidding other that those listed in the page may not be implemented for the robot.
  2. The page will be updated after robot has been modified and tested to be stable.
  3. The system is mainly based on the book "Standard Bidding System" written by Ned Downey & Ellen Pomer.

Last modified at 5-Jun-2017 by WeWeWeb.