פורסם בתאריך 28/12/2011.
אנו שמחים לפרסם את הכתבה השישית והאחרונה בנושא COMPETITIVE AUCTIONS ו PRE-EMPTIVE BIDS " הערכת היד – ספירת לקיחות מפסידות – צעד נוסף קדימה" - "The Losing Trick Count A Step Further " (המקור: mrbridge).
ה-LTC הוא לא כל כך חשוב בהכרזות תחרותיות כי לעתים קרובות המטרה שלך היא לא להכריז חוזה ולבצעו.
הכרזות מנע נכנסות לאותה קטגוריה של הכרזות תחרותיות. בדרך כלל תהיה מידת ההתאמה שלך כי היא בעלת חשיבות עליונה, אך יש מקרים, במיוחד עם הכרזות פתיחה Weak Two , כאשר ה-LTC יכול להיות בשימוש.
הכתבה היא בשפת המקור=אנגלית. בהמשך אעלה את התרגום בעברית וכתבות נוספות.
לקריאת הכתבה לחצו כאן
HAND EVALUATION 25
The Losing Trick Count
A Step Further
Part 6 of 6
by Bernard Magee
The LTC is not so important in competitive auctions because often your aim is not to bid a contract to make it. Take this hand, for example; with North-South Vulnerable, you, West, hold:
Using the Losing Trick Count you might assess partner to have 8 losers for an overcall and do a calculation: 9 + 8 = 17; 18 – 17 = 1. So you might conclude: 'I can bid only to the one level, so I have to pass!'
That is no good at all, because bidding in competitive auctions with big fits is a very different matter and, with the vulnerability in your favour, you should bid to the level of your fit. You have five spades and your partner has shown five for his overcall, which makes it a ten-card fit. So you bid to make ten tricks: 4!
The reason why there is such a difference is because you are not expecting to make 4; you are bidding it as a sacrifice – happy to go two or three off doubled – since you will still lose fewer points than by allowing your opponents to make a vulnerable game.
Competitive bidding is a very different subject and it is something I will deal with in detail in another book.
Pre-emptive bids come into the same category as competitive bidding. Usually it will be the extent of your fit that is of utmost importance, but there are occasions, especially with Weak Two opening bids, when the LTC can be of use.
A weak-three opening bid usually has about seven losers. A Weak Two opening bid has 7 or 8 losers.
The discrepancy between the two is simply because a weak three has a longer suit (seven cards), which means an extra small card is excluded from the losing tricks.
Hands E and F exhibit the simple difference in the length of the suit; wihlst Hand G has a third high card which decreases the number of losers by one.
This last chapter on the Losing Trick Count creates extra complications, but it is an attempt to explain that the LTC needs to be integrated with other types of hand evaluation. The chapters following will be dealing with some of these methods of evaluation and will help you to hone your judgement. Learning how to bid accurately is an art form and the more pencils and paints you have, the better the pictures you will be able to create.
To begin with, stick with the first two chapters on the Losing Trick Count, so that you can get to know it well; only once you have mastered the basics should you try the extra complications. Learning new methods of evaluation takes time, but I assure you it is worth it if you are prepared to work at it. Eventually you will find yourself bidding all the games and slams that you always wished you could!