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Mandatory Falsecarding


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As for playing the card you are known to hold, last weekend in the White House Top 12 this position came up:

 

[hv=pc=n&s=shdckjt2&w=shdca43&n=shdc975&e=shdcq86]399|300[/hv]

 

Declarer led a club to his jack, west winning the ace. Later declarer entered dummy again and played a second low club. East played the spade queen. Now declarer had to go back to dummy in case clubs were 4-2, which was inconvenient. Although the result wasn't spectacular, I thought it was a cool falsecard.

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This summer Cecilia Rimstedt made a play similar to the one suggested by Phil_20686 above. I think it was something like this:

 

[hv=pc=n&s=s42hdc&w=sat6hdc&n=skq953hdc&e=sj87hdc]399|300[/hv]

 

When south led a spade up, Cecilia played the 10 as west. Declarer won, and when Cecilia was on lead later she played a low spade to partner's jack.

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  • 2 weeks later...

On Thursday I made a common falsecard which has not been brought up.

 

[hv=pc=n&w=st82hk92dakj932c2&n=s7haq5d864cak8763&d=n&v=0&b=1&a=1cp1s2dpp2hppp]266|200[/hv]

 

I led a club, declarer winning with his Q and immediately playing a club back up. I ruffed, played AK (declarer's Q falling on the 2nd round), and continued with the J, declarer ruffing. Declarer now played a heart up in this position:

 

[hv=pc=n&w=st82hk9d932c&n=s7haq5dcak87]266|200[/hv]

 

Declarer was obviously going to finesse the K, if I play the 9 he know's its safe to cash the ace and then run clubs through partner's presumed J. As it was, I played the K, the card I was about to be known to hold, to give declarer the choice of playing partner for J9xx of hearts, in which case he has to run clubs through partner now. Declarer believed my K, we got an extra trick. (though, as an aside, if I were going to play partner for the J of hearts, then I misdefended; I should have led a low diamond to make it obvious for partner to trump with the J, and then give me another club ruff in return)

 

Its a common position in books to play the highest trump honor so that declarer believes you are out and not a threat to ruff, but I didn't see it brought up here yet.

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These are (below) not mandatory (Class E in OP) and you may choose to play differently depending on position.

 

 

[hv=pc=n&s=s752hdc&w=skt4hdc&n=saj96hdc&e=sq83hdc]399|300[/hv]

 

Play the K and pretend like you have KQx (same goes for QTx) when declarer (south) plays low towards dummy

 

 

 

[hv=pc=n&s=s873hdc&w=skq6hdc&n=saj95hdc&e=st42hdc]399|300[/hv]

 

Play low when declarer (south) plays small to dummy.

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  • 4 weeks later...

As a defender, you might steal an extra trick in these positions:

 

[hv=pc=n&s=s972hdc&w=saj4hdc&n=skq8hdc&e=st653hdc]399|300[/hv]

 

Lead the J of spades, then continue with the 4, hoping they think that 1) you are an idiot, and 2) partner ducked his ace.

 

[hv=pc=n&s=st72hdc&w=saq4hdc&n=sk85hdc&e=sj963hdc]399|300[/hv]

 

Lead the Q of spades, hoping they play you for QJ9 & duck in dummy. Follow with a low spade

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  • 4 weeks later...

How about

 

Kxx

opp

xxx

 

LHO leading Q small small small , J small small small then Ace? Has anyone done this? I am always afraid as declarer of this but no one dares to do it, it seems.

 

 

I've done it a couple of times, and I've seen a partner do it also.

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Same here, and I had it done against me recently -- but it was my own stupid fault for not covering the second time.

Why stupid? It just depends on which you deem more likely, AQJ(...) in LHO or Ax in RHO.

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snip

 

Leading the J from AJx may be even better when dummy has K9x or Q9x. When dummy has anything less than the 9 as the intermediate card, it will be very hard for declarer to guess this correctly when you hit the magic layout, since the J is a normal switch (whereas the J may seem like a bit of a Greek gift with the 9 visible in dummy). However, you have to weigh up the risk if the auction marks you for not having extra length in the suit; declarer might have no choice but to rise on the second round if he lacks the 9.

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How about

 

Kxx

opp

xxx

 

LHO leading Q small small small , J small small small then Ace? Has anyone done this? I am always afraid as declarer of this but no one dares to do it, it seems.

Yes Just do it every time it goes preempt all pass and you have aqj in a side suit lol

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I had mercifully forgotten that the first time I got to apply the "play the card you are known to have" declarer lead low to the AQX and won the Queen. I had started with Kxx.

 

They returned to hand, led another one, I played the King and pard dropped the now stiff Jack. Thanks for reminding me :blink:

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On defence: declarer pulls off a strip and endplay and holds the equivalent of A109 opposite Kxx and your side has QJxxxx. You have to break the suit, holding any of Qxx Jxx or QJx.

 

From either of Qxx or Jxx you must lead the honour, and from QJx, you should randomize your honour lead.

 

Not sure if this holding fits the thread.

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When holding J9xx with the opps holding say A8xx in dummy, to your right, and KQ10x in hand (akin to the B1/B2 positions in OP) if declarer leads the K from hand, and partner follows low, you play the 9 to create the losing option, as OP suggested. However, declarer should always go to dummy first, in another suit, and lead from dummy. You play the 9, and partner will occasionally play the stiff 10.

 

I thought I'd post that as a counter to what is now a very well-known falsecard...indeed, if as declarer you hold KQ7x opposite dummy's A8xx, and have a knowledgable rho, always start, if possible, with low from dummy.

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