Introduction 9th June 2020 ============ The first bridge course that I attended taught British Acol. Not many people play that in Switzerland, so my system has been modified ad hoc over the years to come into line with more common practices in Switzerland. Basic Maxims ============ 1. Bid as high as possible, as early as possible, then back off. 2. Unless very weak, try not to let opponents play at the 2-Level or less in a suit of their choice. But beware of partner misinterpreting and pushing them into a makeable game that they otherwise would not have reached. HCP = High Card Points SP = Strength Points = HCP + distribution pts. Note: SP can only be used if there is a trump fit. Opening Bids: ============ An opening bid promises 12+ HCPs or 7 or less losers or Rule of Twenty (sum of HPs and number of cards in the 2 longest suits is 20 or more). 1C may be a doubleton in clubs (See "Better Minor" below). It should not be passed. A 1D response shows a weak hand or diamond suit. 1D promises 4 or more D and no 5-card major suit 1H/1S 5+ card suit 1NT 15-17 HCP, no void, no singleton, at most one doubleton and no 5-card major suit. 2C response is Stayman. 2D and 2H responses are transfers. 2C Semi-forcing. Most likely a strong suit and 5 losers or less, if the strong suit becomes trumps. Response is 2D. Responder may pass before game is reached. 2D Forcing to game, unless 2NT is next bid. Response gives strength: 2H - less than 7 HCP, no Ace. 2S - one Ace, but nothing else. 2NT - 2 Kings, or equivalent 3C - one Ace and extra points too. 3D - 2 Aces (or more - never happens). 2H/2S Weak 2, 6-card suit, 6-10 points, mainly in the 6-card suit. 2NT response is special, see: https://maden.ch/bridge/weakTwo/weakTwo.pdf 2NT 20-21 HCP. At most 1 doubleton and at least a Kx block in every suit. 3C/3D/3H/3S Barrage. Expect a -2 (vul) or -3 (non-vul) result with no help from partner. Responses ========= 1) With 6-7 HCP or more, parter may not pass unless opponents have intervened. 2) To respond at level 2 in a new suit, partner needs 10+ SP. Otherwise he must bid 1NT. Important: a response may be a 4-card suit, EVEN AFTER INTERVENING BID from the opponents. Opener needs 4 cards in that suit to support it. 3) NT response is always limited: 1NT - 8 or less HCP. It may be a desperation bid. 2NT - 9-11 HCP 4) 4NT - Asking for Aces. Responses 5C: 0 or 3, 5D: 1 or 4, 5H: 2, 5S: 2 Aces + a King. Intervention (Overcall) Bids ============================ 1) A suit overcall shows 5+ card suit. Maybe quite weak - down to 8 HCP or a long suit. 2) A double not preceded by a pass shows an opening hand and strength in the other suits. 3) A double after having passed: a) if the opponents have bid a major suit, it shows 4 cards in the other major and probably 9-11 HCP. b) otherwise, probably shows length in the non-bid suits and 9-11 HCP. 4) Jump to 2H or 2S - see Weak-2 above. 5) A redouble of opponent's take-out double indicates 8+ SPs. Opening Lead ============ 1) If partner has bid, I will lead my HIGHEST card in that suit. 2) If partner has not bid, and the contract is NT, and I have no obvious minor suit lead, I will lead my WEAKER major suit (hoping to find partner's better suit - theory: if declarer had a decent major suit, it would be the trump suit. I will not normally lead suit bid by opponents, but may lead through suit bid by dummy. 3) I do not lead from under a King. 4) Singleton lead in Trump Contract: Only if: a) Partner has bid the suit or b) I have at least 5 trumps 5) Doubleton lead in Trump Contract: Only if: a) Partner has bid the suit or b) I have at least 5 trumps 6) If my only option is to lead a suit with an Ace in it, (e.g. I have Qxx in trumps), I lead the Ace. But if possible, I'll lead a trump. Signals ======= 1) On opening lead - in suit contracts, high response is positive. - in NT contracts, low response is positive. 2) First Discard: Lavinthal Other Conventions, depending on Partner ======================================= Better Minor: 1C indicates at least a 3-card suit, and the club suit is longer than the diamond suit. 1D may indicate only a 3-card suit and the diamond suit is longer than the club suit. Inverted Minor: Raising partner's opening of 1C or 1D to the 2 level is strong. Raising partner's opening of 1C or 1D to the 3 level is pre-emptive. Bergen Raises: Jump to 3C => 4-card fit + 8-10 SPs Jump to 3D => 4-card fit + 11-12 SPs Jump to 3H/S => 4-card fit + 0-7 SPs 2NT => 3-card fit + 11-12 SPs If opponents intervene at 2+ level, Bergen is off and calls are natural. 2D-Multi: See: https://maden.ch/bridge/2KaroMulti/2KaroMulti.pdf 4C - Asking for Aces. Only if there has been no bid of 3C. Drury: 2C response by a passed hand after partner opens 1H or 1S in third or fourth seat. Asks if opener's bid is weak or not.