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Card Combination Play


microcap

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well the problem is entries. If you play ace of diamonds, diamond ruff, heart to hand, diamond ruff with jack your only way back to your hand is a trump which means you will be left with 2 black suit losers. So your only hope to make is Kxx of diamonds onside.
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Don't quote me on this because I am a terrible statician - but i believe the odds of the KJ tight in one hand (which is what you need for this to work) is less than 10%. (My reckoning 4%) Otherwise as Jason points out you dont have the entries or the number of ruffs in dummy to do what you need to do. Think a finesse is still close to 50% unless they changed it.
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I don't think it is that simple as previous posters indicate :-).

Considering 2 entries back to hand:

 

1.The ruffing way works against any 3-3 diamond distribution, while the finesse fails 50% of the 3-3 distr. (K with W)

2.With 4-2 split, the ruffing wins when W has Kx, but finesse is better when W has xx.

3.With 5-1 split, ruffing is better when W has bare K, or E has sin J. Finesse is never better than ruffing with this split.

 

The odds of 1. are higher than 2. , so ruffing wins by a small margin, I estimate about 56%

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Play A and than small for a ruff. After you return to you hand with trump.

Then play the Q for a ruffing finesse, and drop if the queen in not covered with the king.

 

This should work, if anyone holds K or Kx, and if LHO hold Kxxx.

If the J drops you can repeat the ruffing finesse with the 10.

 

This should be better than the simple finesse.

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Play A and than small for a ruff. After you return to you hand with trump.

Then play the Q for a ruffing finesse, and drop if the queen in not covered with the king.

 

This should work, if anyone holds K or Kx, and if LHO hold Kxxx.

If the J drops you can repeat the ruffing finesse with the 10.

 

This should be better than the simple finesse.

I dont think your line makes LHO has Kxxx.

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