Proposition of the bidding system for PRO-AM tournament

For the pairs, created for one afternoon - as in our PRO-AM tournament we propose simple bidding system, based on Polish Club (Wspólny Język):

Opening bids

1♣ - three ways -  natural 15+ HCP, 5+♣, balanced 12-14 HCP, strong - 18+ HCP, any

1♦ - natural, 11-17 HCP, 5+♦ (4 when 4441 or 4♦5♣ 11-14 HCP)

1♥/♠ - natural, 5+♥/♠, 11-17 HCP

1NT - 15-17 HCP

2♣ - 11-14 HCP, 5+♣ and 4♥/♠ or 6+♣♦

2♦ - 6-10 HCP, mini-multi - weak two in ♥/♠

2♥ - 6-10 HCP, 5+♥ and 5+any

2♠ - 6-10 HCP, 5+♠ and 5+♣/♦

2NT - 6-10 HCP, 5+♣ and 5+♦

3NT - solid minor without side stopper

Pre-empts - I and II hand constructive

Further bidding

After 1♣

-   1♦ - negative, 0-6 HCP, any hand; strong 16+HCP, balanced without 4♥/♠, 7-11 HCP unbalanced without 4 in major

-   1♥/♠ - 7+ HCP, 4+♥/♠, forcing to 1NT

-   1/2/3 NT - limit

-   2♣/♦ - 5+♣/♦, game forcing, possible 4 H/S

-   2♥/♠ - 6+♥/♠, game forcing, some slam prospects

-   3♣/♦ - 9-11 HCP, good 6+ suit

 

1♣ - 1♥/♠/NT

2♣ - natural, one round forcing (15+PC); now 2♦ = artificial, any GF, others - not forcing

 

1♣ - 1♥/♠

2♦ = artificial, GF relay with 3+♥/♠ (“odwrotka”); responses:

-          2♥ = 7-10 PC, 4♥/♠

-          2♠ = 11+PC, 4♥/♠

-          2NT = 7-10 PC, 5+♥/♠

-          3♣ = 11+PC, 5+♥/♠

 

After 1♦

- 1/2/3 NT - limit

- 2♦ - inverted raise, forcing to 3♦

- 3♦ - mixed raise

- 2♣ - game force unless clubs are repeated at 3 level

- 2♥ - 4-8 PC, 5♠ 4+♥

- 2♠ - 9-11 PC, 5♠4♥

After 1♥/♠

- 1NT - up to 11 HCP

- 2♣/♦ (2♥ after 1♠) - game force unless responder suit is repeated at 3 level

- 2NT - game invitational with support

- 3♣ - 6-9 HCP, 4+ card support

- 3♥/♠ - preemptive

After 1NT

-   2♣ - Stayman, can be garbage Stayman (1NT - 2C - 2D - 2H = both majors 4+-4+, weak)

-   2♦/♥ - transfer, new suit by responder is GF

-   2♠/3♣ - transfers

-   2NT - invitational

-   3♥/♠ - game forcing, 5+-4+ minors, short suit bid

After 2♣

- 2♦ - relay, at least invitational (new suit in next round forcing)

- 2♥/♠ - 5+♥/♠, not forcing

- 2NT - weak club raise or any 5-5, game forcing (puppet to 3♣, later - pass = support, 3♦ = ♦+♥, 3♥ = ♥+♠, 3♠ = ♠+♦)

- 3♣ - invitational

- 3♦/♥/♠ - invitational, good 6-card suit

After 2♦

-   2♥/♠ - pass or correct

-   2NT - game forcing relay (3♣ = any maximum (3♦ - relay, 3♥=♠, 3♠=♥), 3♦/♥ = minimum with hearts/spades; )

-   3♦ - invitation to game in opener’s suit

-   3♥ - pass or correct

-   3♠ - invitational, 6+ spades

-   4♣ - “show the suit by transfer”

-   4♦ - “bid your suit”

After 2♥/♠

-   2♠, 3♣ - pass or correct

-   2NT - game forcing relay

-   3♦ - invitational with fit in the opening suit

After 2NT

-   3♥ - asks for shortness

Further bidding

Double checkback, fourth suit forcing, Drury after pass - 1♥/♠,

Slam bidding

Cue bids Italian style (up the line), RKCB with trump queen showing responses (5♣=1-4, 5♦ - 0-3),

Defensive bidding

Light 1 level overcalls (2♣ - Drury - fit except overcall after 1♣ - the general forcing), sound 2 level, weak jumps, Michaels cue bid, 1NT natural overcall, responsive double 2/3 level denies 4 cards in a major

Competitive bidding

Negative free bids on 2 level, negative doubles 1/2/3 level, after 1 and 2 level overcall over 1♥/♠ 2NT is game forcing with fit

Leads and discards

Polish style - from honours - natural, from spots - 2/4, upside down discards, Smith Peter (low=positive) against no trump contracts from both hands