אתה נמצא כאן: ראשי / הטור של גבי לוי / "הערכת היד – ספירת לקיחות מפסידות בפעולה" – כתבה שלישית (אנגלית) מאת גבי לוי

"הערכת היד – ספירת לקיחות מפסידות בפעולה" – כתבה שלישית (אנגלית) מאת גבי לוי

פורסם בתאריך 02/11/2011.

אנו שמחים לפרסם את הכתבה השלישית (מתוך 4) בנושא דוגמאות ל "יישום שיטת השוואה - הערכת היד – ספירת לקיחות מפסידות – בפעולה"  -  "The Losing Trick Count in Action " (המקור: mrbridge).

כזכור עסקה הכתבה הראשונה בנושא  ספירת לקיחות מפסידות בידו של השותף, דהיינו לאחר ספירת הלקיחות המפסידות בידך, יש להוסיף את מספר הלקיחות המפסידות בידו של שותפך, ולהחסיר הסיכום מהמספר 18. התוצאה הינה גובה החוזה שיש להכריז.

בכתבה השלישית: דוגמאות מפורטות שיאפשרו לך לעקוב בדיוק איך זה עובד - וגם לראות עד כמה מבריק זה יכול להתברר!

הכתבה היא בשפת המקור=אנגלית. בהמשך אעלה את התרגום בעברית וכתבות נוספות.

לקריאת הכתבה לחצו  כאן

הכתבה המלאה:

HAND EVALUATION 17

The Losing Trick Count in Action
Part 3 of 4
by Bernard Magee

EXAMPLES

If you are still confused, do not be worried. Here are more examples that will allow you to follow exactly how it all works – and also see how brilliantly it can turn out!

 

A nice, succinct auction. West opens 1  and East counts his losers: 8, one better than minimum, so rather than 2, he bids one more: 3. Now West counts his losers: 6. He, of course, as opener, compares to 7 losers. He is also one better than his minimum, so he bids one more:4.

A great auction: the LTC has evaluated the worth of the singleton diamond – all that is needed to make the contract is to take two diamond ruffs in dummy's hand.

This time we have two natural bids (1   and 1) before West counts his losers – just 5. With 7 losers he would rebid 2, and with 6 he would rebid 3, but with 5 he should bid 4. It looks a bid odd, but whenever you start to doubt the LTC, have a look at the strength of your long suits and, if they are good, then trust the system. Here there is no doubt that West's suits are first-rate and so he should jump to game.

That is not necessarily the end of the auction: East should count his losers too: 9. This is a minimum hand, so East passes happily. What a great game on just 19 points! The beauty of it is that the LTC predicted exactly what would happen. If the clubs break 3-2, you can establish the suit by ruffing one club and thus three of the small clubs will be winners.

One of the things with which most club players struggle is when to bid on to slam and this is an area where the LTC can help enormously. Take a look at Layout 4, for example: after 1  - 1  West counts his losers and finds 5. As in Layout 3, he should jump straight to game and rebid 4. However, as hinted at earlier, this is not the end of the auction. East counts his losers: 6. Now remember that he is the responding hand, so he compares to a minimum of 9 losers. So: with 9 he would pass, with 8 he would contemplate 5, with 7 he would think of 6  - and with 6 he should be dreaming of 7!

Yes, what the LTC is saying is that there is a great chance of slam, but do not forget that you can only make the required number of tricks if you are in control (that is, if you have the necessary aces and kings). After all, you could have A-K-Q-J-10-9-8-7 in one hand and A-K-Q-J-10-9-8-7 in the other (which are worth sixteen tricks), but if both hands have a doubleton club, then your opponents could take the first two tricks!

That is an extreme example, but it highlights how important it is to check for controls if you are going for a slam, rather than blindly following the LTC. The East hand in Layout 4 is not ideal for Blackwood with its two small doubletons, but the important thing to note is that the LTC says there is a chance that a Grand Slam might be on, so East really should bid on over 4 - however he does it. If he does use Blackwood, he will find all the aces and all the kings in place so 7  is the slam to bid! Note that 7NT would go at least one down.

אודות Gabi

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