פורסם בתאריך 13/03/2012.
אנו שמחים לפרסם את הכתבה הרביעית (מתוך 6) בנושא " הערכת היד – ניסיון להגיע להכרזת משחק מלא - בסדרת המגיב " (המקור: mrbridge).
הפעם , הסדרה של המגיב היא המוסכמת, עם זאת, שים לב שחשוב ששני השחקנים מסכימים על סדרת השליט (שניהם כנראה הכריזו אותה) לפני שאחד מהם עשה ניסיון להגיע למשחק מלא
הכתבה היא בשפת המקור=אנגלית. בהמשך אעלה את התרגום בעברית וכתבות נוספות.
לקריאת הכתבה לחצו כאן
HAND EVALUATION 36
Part 4 of 6
by Bernard Magee
You can also use game-tries when opener supports responder to the two level and, once again, we will be using help-suit game tries. For example:
This time it is the responder's suit that is agreed. Notice, though, that it is important for both players to agree the trump suit (they both must have bid it) before one of them makes a game try. On Layouts 6 and 7, it is the East hands that are identical and the West hands that are slightly different. Both auctions start 1 - 1- 2 - 2: East has heard his partner agree his suit and, with 11 points and a five-card heart suit, he fancies a chance for game, especially since his doubleton queen is in his partner's suit. Rather than just bidding 3, he wants to be more descriptive, so he asks for help in his weakest suit, spades, by bidding 2.
In Layout 6, West has a minimum opening hand with very little help in spades. His queen doubleton in spades counts as 2 losers: it does not gain strength in this bidding sequence since partner has bid the suit to show weakness rather than strength, so it is as weak as ever. With 2 losers, you should judge the overall strength of your hand: here it is certainly weak and you should settle for 3. You have four obvious losers, so you did well to stay low.
In Layout 7, you also have two losers in spades, but this time your hand is a lot better: your club suit is strong and your queen doubleton might well be strengthened by your partner's hand: if he is weak in spades, he is likely to be stronger in diamonds. You have 13 points and a strong five-card suit, so you are certainly not minimum. I think you should go for it and bid 4. With just two spade losers, all you need to do is avoid losing a heart and a diamond; even if both suits were nasty, you might be able to throw East's diamonds on your clubs, so the game is a good one, with every chance of success.
It might seem that, by using the help-suit game try, you are giving important information away to your opponents and that they will know what to lead. This is true to some extent, but leading the declaring side's weak suit is not always the best thing to do:
Here a club lead from the opponents will actually give you a trick – one of your queen or jack will eventually make. If you have to lead the suit yourself, then the jack might lose to the king and the queen to the ace leaving you with nothing.
Therefore, although you are giving some information away, it is not always easy for your opponents to use it wisely.
How do you know that a game try is not a cue-bid?
One question I am often asked is how do you tell the difference between game tries and cue-bids? Game tries of this sort come only after a weak raise of a major (to the two level), so your aspirations are unlikely to go beyond game. Cue-bids tend to be at slightly higher levels when both hands have shown reasonable strength, e.g. after 1 - 3. There can be a little more confusion in minor-suit bidding; in the last chapter we saw game tries after 1 - 3. Generally in minor-suit bidding a bid above 3NT will be a cue-bid, while in major-suit bidding, when a major suit has been agreed, a bid above three-of-the-major is a cue-bid.
What happens if you have raised with three-card support?
As discussed earlier (pages 28- 29), it is often correct to raise 1 to 2 (or 1 to 2) with three-card support rather than respond 1NT. This certainly affects your response to a game try; most notably, you might respond 3NT on a suitable type of hand:
West opens 1 and East correctly prefers a 2 response to 1NT, but, over West's game try of 3 , East can see that no-trumps might be sensible: he has a maximum hand in terms of high-card points and a good stopper in clubs.