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Bidding System
Nottingham Club System

1♣  16 – 21 (may be more)

            1          < 8 (or poor 8) (and see [*1])

            1M/2m  8 – 11, 5cd suit

            1NT      8 – 11, no 5cd (or poor 5) suit

            2M/3m  12+, 5cd suit

            2NT      12+, no 5cd suit

                        rebid of 3♣  after 2NT is Baron [*2]

1  12 – 13 flat (?? 5cd♣ ); or 12 – 15, 5cd  suit

            pass     < 5

            1 any    5 – 9, 5cd suit

            1NT      5 – 9, no biddable 5cd suit

            2♣        Stayman [*1]: 10+, any shape

            2other   10 – 11, 5cd suit

            2NT      =12, no 5cd M (inviting game)

            3 any    12+, 5cd suit (forcing to game)

            3NT      13 – 19, flat

1M 12 – 15, 5cd suit (if both, bid ♠  first)

            2 of suit 6 – 9, 3cd fit

            3 of suit 10 – 11, 3cd fit

            4 of suit 12 – 15, 3cd fit

            change suit is 8 – 11, 5cd suit

            1NT      8 – 11, < 3cd in opener’s suit

                        rebid of 1st suit shows(?) 6+cd suit

1NT 14 – 15, no 5cd M, flat (?? 5cd m)

            2♣        Stayman [*1]: 8+, any shape

            2other   < 9, 5+cd suit (weak takeout)

            2NT      =10 (inviting game)

            3any     10+, 5+cd suit (encouraging)

            3NT      11 – 16, no 5cd suit or 4cd M

2♣  14 – 15, gd 5 or 6cd ♣   suit

            2other   8 – 10, 5cd suit, club shortage

            2NT      8 – 10, no gd 5cd suit, no fit

            3♣        8 – 11, 2 or 3 clubs

            3other   11+, 5cd suit

            3NT      11 – 16, no 5cd M

            4♣        12+, gd support (forcing?)

2  22+ any shape

            2        < 8 (other bids slam seeking?) [*2]

            2♠        8+, 5cdª suit

            3other   8+, 5cd suit

            2NT      8+, no 5cd suit

                        3♣  rebid after 2NT is Baron [*2]

2NT 20 – 21, flat

            3♣        Baron [*2]: 12+ (slam seeking)

            3other   3 – 4, 5cd suit

            3NT      5 – 10, no 4cd M (to play)

            4         4+, 6cd suit (unbalanced)

            4M        4+, 5cd suit (slam unlikely)

            ??         5 – 10, 4cd M

preemptive bids

2M weak:          6 – 10, gd 6cd suit

3any preempt:   < 10, 7cd suit

4any preempt:   =10, 8cd suit

            respond to any above only with 16+ points

Stayman [*1]: combined 22+

asks for 4cd M as follows:

1  – 2♣ 

1NT – 2♣ 

1♣  – 1  – 2NT – 3♣ 

1m (opps) – 1NT o/call – P – 2♣ 

1m (opps) – * (ptnr) – … – 1NT – P – 2♣ 

            2         no 4cd M

            2M        4cd suit (with both, bid © first)

Baron [*2]: combined 32+

looking for a fit (incl. m suit) for slam:

2NT – 3♣ 

2  – 2  – 2NT – 3♣ 

1♣  – 2NT – 3♣ 

            3any     4cd suit

            3NT      4cd♣  suit

both ptnrs bid 4cd suits up the line until fit found

negative double

double of overcall of partner’s opening bid:
shows 8 – 10, any shape, and requires rebid

(other than 1st round doubles are for penalties)

notes

  1. flat hand implies no singleton or void
  2. suit lengths, except preempt bids are, generally, minimum holdings (x cds +)
  3. =x (points) is x points exactly
  4. indent indicates responses to bid above
  5. m = minor suits
    M = major suits
    cd = card(s)
    gd = good
    any = any suit (i.e. not NT)
    other = any suit except the one just described