4m over 2M: Leaping Michaels; strong hand, 5-5 or 5-6 in other M and that m
of 3X:
Double: Cooperative
Cheapest suit: 13-18, good 5+ cards
New suit: F1
3NT: To play
Cuebid: Takeout
of 4X:
Double: Takeout
4NT: 2-suiter
of 5X:
Double: Cooperative
of 6X/7X:
Double: Lead-directing
Doubles
Competitive: Over 1X-2X, double shows general strength primarily for takeout.
Responsive: After LHO opens, partner bids, and RHO raises (not preemptively), double shows strength in the unbid suits and no support for partner’s suit, if any.
After 1m + ♦ + raise, double shows both M’s
After 1m + 1M + raise, double shows the 2 unbid suits and no support
After 1M + Other M + raise, double shows m’s and no support
Snapdragon: After 3 suits have been bid, double shows 5+ in the 4th suit and tolerance for partner’s suit.
1♣ + 1♥ + 1♠ + Double = 5+ diamonds, ~2 hearts
Support: After 1X + Pass + 1M + Overcall (below 2 of the M), double or
redouble shows 3-card support for Responder’s major.
Conventions
Blackwood: Asks for aces and the trump king, if any (5 key cards if trump suit, 4 if notrump).
Mystic uses 1430 Roman Keycard Odd-Even responses (with kickback and Voidwood for trump suits). With notrump or a suit agreement other than clubs, 4♣ is Blackwood. If 4♣ is unavailable or natural, 4 of the suit above trump is Blackwood (kickback). Blackwood structure is recursive: After any response, Blackwood bidder can place the contract in the trump suit or slide to ask about the next honor.
The basic 1430/Odd-Even step structure, used after NT or a slide, is:
1 step: 1 or 4 of the top honor
Slide asks about next honor
1430/Odd-Even step responses
2 steps: 0 or 3 of the top honor
Slide asks about next honor
1430/Odd-Even step responses
3 steps: 2 of the top honor, odd number of next honor
Slide asks about next honor
1 step: 1 of the honor, odd number of next lowest honor
2 steps: 1 of the honor, even number of next lowest honor
3 steps: 3 of the honor, odd number of next lowest honor
4 steps: 3 of the honor, even number of next lowest honor
4 steps: 2 of the top honor, even number of next honor
Slide asks about next honor
1 step: 0 or 4 of the honor, odd number of next lowest honor
2 steps: 0 or 4 of the honor, even number of next lowest honor
3 steps: 2 of the honor, odd number of next lowest honor
4 steps: 2 of the honor, even number of next lowest honor
Because of the trump honors and possible void, steps after a suit bid are:
1 step: 1 or 4 key cards
Slide asks about trump Q and outside kings
Return to trump suit: Denies Q
1430/Odd-Even steps: promises Q, shows outside kings
Skip slide asks about outside kings
1430/Odd-Even steps: shows outside kings
2 steps: 0 or 3 key cards
Slide asks about trump Q and outside kings
Return to trump suit: Denies Q
1430/Odd-Even steps: shows outside kings
Skip slide asks about outside kings
1430/Odd-Even steps: shows outside kings
3 steps: 2 key cards, no trump queen
Slide asks about outside kings
1430/Odd-Even steps: shows outside kings
4 steps: 2 key cards, with trump queen
Slide asks about outside kings
1430/Odd-Even steps: shows outside kings
5 steps: 2 key cards, with a void
Slide asks about void
1 step: void in lowest outside suit
2 steps: void in middle outside suit
3 steps: void in highest outside suit
6 steps: 1 key card, void in lowest outside suit
7 steps: 1 key card, void in middle outside suit
8 steps: 1 key card, void in highest outside suit
Because of opener’s limited values, steps after a preempt are:
1 step: 0 key cards
2 steps: 1 key card, no trump Q
3 steps: 1 key card, with trump Q
4 steps: 2 key cards, no trump queen
5 steps: 2 key cards, with trump queen
PODI (Pass = 1 step, double = 2 steps) over interference through 4NT; DEPO (double = even number of key cards, pass = odd) over interference at 5-level.
Exclusion Blackwood: As above, except that Responder ignores honors in the bid suit.
Cappelletti over weak NT (low end ≤ 13 HCP)
Double: Optional (strong, balanced hand)
2♣: 1-suited hand
Pass: 7+ ♣, weak hand
2♦: Transfer to find Opener’s suit
Pass: Weak hand with ♦
2M: Weak hand
Jump in suit: F1
2M: 6+ cards
2♦: Both M’s
2♥: ♥ + m
2♠: ♠ + m
2NT: Both m’s
DONT over strong NT (low end ≥ 14 HCP)
Double: One-suited hand
2♣: Transfer to find Opener’s suit
2♦/2M: 6+ cards
2m/2♥: That suit and a higher suit
Cheapest suit: Opener should pass or correct to other suit
2♠: Weak hand with ♠
Drury: Support response by a passed hand to 1M
2♣: 8–10 HCP, 3- or 4-card support
2♦: Asks for more information
2 of the M: 3 trumps, no singleton or void
2 of the OM: 3 trumps, singleton somewhere
2NT: Asks about singleton; F1
3♣: ♣ singleton; F1
3♦: ♦ singleton; F1
3♥: OM singleton; F1
2NT: 4 trumps, no singleton or void
3 of new suit: 4 trumps, singleton in bid suit
3 of the M: ?
3NT (when ♥ are trump): 3-4 trumps, spade void
4 of new suit below the M: 3-4 trumps, void in bid suit
2 of the M: No interest in game (light opening)
4 of the M: Signoff
Jacoby/Jordan 2NT: Forcing raise of a M
2NT with no interference: Slam-invitational raise of partner’s M, tends to deny singleton or void; FG
2NT if opponents have bid: Limit raise or better; invitational
3m: Minimum (3♣) or maximum (3♦) w/ singleton; FG
Cheapest new suit: Asks about singleton; F1
1 step: ♣ singleton; F1
2 steps: ♦ singleton; F1
3 steps: OM singleton; F1
3 of the M (with no interference): Asks for cuebids
3 of the M (if opponents have bid): Minimal hand; signoff
Lead-directing support bid: Responder’s unnatural competitive bid below raise of Opener’s suit shows a raise and lead suggestion.
Examples:
3♥ + X (takeout) + 4♣ (willing to play 4♥, requests ♣ lead)
1♥ + 1♠ + 2♥ + 2♠ + 3♦ (willing to play 3♥, requests ♦ lead)
Mathe: Shows M or m 2-suiter after a strong 1♣ opening
Double: Shows M’s
1NT: Shows m’s
Other bids unchanged
New Minor/Major Forcing (NMF): Artificial bid of a new suit to show invitational or better hand and ask Opener to describe his hand.
2♣: NMF; F1(Alert!)
2♦: no support for M, minimum unbalanced hand with ♦‘s
2 of M: 3-card support, minimum hand
2♥ after 1♦ – 1♠ – 1NT – 2♣: no support, unbalanced minimum with ♥‘s
2♠ after 1♦ – 1♥ – 1X – 2♣: no support, unbalanced minimum with ♣‘s (Alert!)
2NT: no support, balanced minimum
3 of M: 3-card support and maximum hand
3 of new suit: no support, unbalanced maximum
3NT: no support, balanced maximum
Ogust: 2NT over partner’s weak 2M asks for clarification
3♣: Bad suit, bad hand
3♦: Bad suit, good hand
3♥: Good suit, bad hand
3♠: Good suit, good hand
3NT: AKQxxx
Sandwich NT: After LHO opens 1X, partner passes, and RHO responds 1X, 1NT is for takeout in the unbid suits; implies less distribution than double.
Stayman: Asks NT bidder about 4-card M’s.
Responder bids cheapest ♣ to learn about NT bidder’s M-suit distribution. Responder may have any strength with both M’s, invitational or better with at least one M, or weak with long ♦‘s. Example here is shown after 1NT; all levels are 1 higher after 2NT.
2♣: Extended Garbage Stayman
2♦: No 4-card M; F1
Pass: Responder actually had long ♦‘s
2M: Weak; NT bidder should pass or correct 2♥ to 2♠
2NT: invitational to 3NT(Alert! Does not promise 4-c M)
Transfer lebensohl (Slow Shows, Direct Denies) after overcall of 1NT or double of partner’s weak 2
Pass: No information
Double: Penalty
2X: To play
2NT: Relay; F1
3♣: Forced bid
Pass/new suit: to play
3NT: Promises stopper; to play
Cuebid: Stayman, with stopper; FG
3X: 5+ cards in next highest nonovercalled suit; Invitational or better
Cheapest of transfer suit: Minimum hand
Other bids: Maximum hand FG
Cuebid: Stayman, no stopper; FG
3NT: Values for 3NT, no interest in M-suit game, no stopper
Opener must have stopper to pass
Unusual over unusual: After a 2-suited overcall (e.g., Michaels or Unusual 2NT), Responder can cuebid to show one of the other suits.
When both overcalled suits are known, the cheaper cuebid shows the lower outside suit; the higher cuebid shows the higher outside suit. When cuebidding support for Opener’s suit, Responder promises invitational or better values. When introducing a new suit, Responder forces to game.
When only one overcalled suit is known, a cuebid of this suit promises a limit raise or better for Opener’s suit.
Other suit bids are to play, 2NT and 3NT are natural, and a double suggests invitational or better strength but no support or other clear action.
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