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Grand Slam
Force (GSF) - With a known fit, a jump bid of 5 Notrump may be
used to enquire about partner's top three trump honor. 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.
1S - 3S;
5N - ? |
4H - 5N;
|
1S - 2D;
3S - 5N; |
|
An adaptation includes includes a lower level step response:
| Step |
Meaning |
| 1st (6C) |
No trump honors |
| 2nd (6D) |
Trump Queen |
| 3rd (6H) |
Ace or King of trump with
only 3 trump |
| 4th (6N) |
Ace or King and extra
trumps |
| 5th (7C) |
Both Ace and King, with
support of partner's suit (such as Diamonds in the third example above) |
Note -
some play 5 Notrump as "Pick a Slam"
in a different scenario.
Also
see books on
Slam and other slam conventions:
1430,
Baby Blackwood,
Blackwood, Controls,
Exclusion Blackwood/Voidwood,
Gerber,
Grand Slam Force,
Jacoby 2 Notrump,
Key Card Blackwood,
Kickback,
Last Train, NAMYATS,
Pick a Slam,
Quantitative Notrump Bid,
Rolling Blackwood,
Serious 3 Notrump,
Slam Try - Stayman,
Splinters,
Opener
Jump Shift,
Strong Jump Shift, and legacy treatments as
Roman Asking Bids,
Roman Blackwood,
Roman Gerber. Slam
treatments
also include interference of
an overcall by opponents, as
Negative Slam Double,
DOPI,
DEPO, ROPI. |
