Jack 1.0
Hans Kuijf

General Method: 5-card major, 15-17 NoTrump

Two Over One: Not game forcing

Openings, overcalls and preempts are normal

Forcing: 2 clubs (Always strong) and 2 diamonds (Flannery)

NOTRUMP OPENING BIDS

1NT: 15 to 17 HP, 5 card major allowed, systems on after DBL

  2C : Stayman-relay (can be 8-9 HP without 4 card major)
  2D : Transfer to H
  2H : Transfer to S
  2S : Transfer to C
  2NT: Transfer to D
  3C/3D/3H/3S : Natural, GF
  4C : Gerber
  4D : Transfer to H (to play 4H)
  4H : Transfer to S (to play 4S)
  4S : Minors (5+/5+)
  4N : Quantitative

2NT : 20 to 22 HP, 5 card major allowed

  3C : Puppet-Stayman (Dutch variation)
       3D : 4 card major
       3H : 5 card H
       3S : 5 card S
       3NT : no 4 or 5 card major
  3D : Transfer to H
  3H : Transfer to S
  3S : Transfer to C
  3NT : 5 S + 4 H

3NT : Gambling (solid minor)

NoTrump rebids:
1x-P-1y-P-1NT = 12-14
1x-P-1y-P-2NT = 18-19
1x-P-1y-P-3NT = 18-19, 6+ in x

MAJOR OPENINGS: 5+ cards

Conventions: Splinters (possibly Garozzo splinters), Bergen like raises
  1NT   = 6-9 HP (10 HP possible but rare) non forcing
  2H/S = 3,  6-9 HP
  2NT   = 4+  GF
  3C   = 4+, 7-9 HP
  3D   = 4+  invite
  3H/S = 4+, 2-6 HP
 

MINOR OPENINGS: Clubs 2+, Diamonds 4+

Conventions: Splinters, Inverted minor
  Special are:
  1C-P-2NT = 6-9 HP with 5+ clubs (bad suit)
  1C-P-3C = 6-9 HP with 5+ clubs (good suit)
  1D-P-2NT = 6-9 HP with 5+ diamonds (bad suit)
  1D-P-3D = 6-9 HP with 5+ diamonds (good suit)

TWO LEVEL OPENINGS:

2C: Strong, SF/GF
     2D: Negative
     2H/2S/3C/3D: 5+ with two tophonneurs

Special: 2C-P-2D-P-2Major-P-2NT = second negative

2D: Flannery (5H + 4S, 11-15 HP)
    Raises are preemptive
    2NT is relay

2H: Weak, 6-11 HP, 6 card with at least 2 honneurs,
    (possibly good 5 card in 3rd position)
    2NT: Asking
        3C: Minimum, bad suit
        3D: Minimum, good suit
        3H: Maximum, bad suit
        3S: Maximum, good suit
        3N: Solid suit
2S: See 2H

SIMPLE OVERCALL:

1 level 7+ HP, good suit, almost never 4
2 level 8+ HP, good suit
and then
  New suit: Non forcing, constructive
  Raises are weak
  Direct cuebid: fit or strong
  Jump cuebid: fit, good raise

CONVENTIONAL CALLS AND SPECIAL SITUATIONS:

- CheckBack Stayman
- 4th suit one round forcing
- Weak jump overcall
- Ghestem
      Cue bid: shows the highest and lowest; except 1D-3D shows the majors
      2NT: shows the lower two suits
      3C: shows the higher two suits; except 1D-3C is weak
- Dutch variation of Michaels leap versus preempts on two and three level
- Negative doubles through 4D
- Responsive doubles
- Support double
- Splinters
- Mixed cuebids
- Roman Keycard (14 - 30 - 2 - 2 + trump Q)
- DOPI - ROPI
- Multi-Landy after 1NT
     DBL : 4 card major, 5+ minor versus strong NT
     DBL : 14+ HP versus weak NT
     2C  : Majors
     2D  : 6 card major
     2H  : 5 H + 4+ minor
     2S  : 5 S + 4+ minor
     2NT  : Minors
- Lebensohl after intervention over 1NT
            after takeout double over weak 2D/2H/2S
- Balancing NT: 11-14 HP after 1C-P-P and 1D-P-P
               11-16 HP after 1H-P-P and 1S-P-P
- Direct NoTrump overcall 15-17 HP with stop, systems on
- After weak 2H/2S 2NT = 16 - 18 HP (see 2NT opening for conventions)
- Some fit jumps in competition (only when we opened)
- After Multi-2D (Multi 2D not allowed):
  DBL   : 12-15 HP balanced or strong unbalanced or 19+ HP balanced
  2H/2S : 5+ natural
  2NT    : 16-18 HP
  3C/3D : 6+ natural
  4C/4D : 5+ minor and 5+ major

LEADS AND SIGNALS:

Leads: 1st/3rd/5th, top of sequence (both vs suit and NoTrump)
       for example:
                  A from AK, J from AQJ, T from KJT,
                  T or y from KJTxy, J from JTxyz, J or z from JTxyz (normally the J)

Signals: count (low = even) first time a suit (not trump!) is played
         discarding: count