west start with Q♠
01
#2
Posted 2013-August-20, 11:37
♣J next... as the only hope, albeit slim, of getting 2 tricks in ♣ for a ♠ pitch .
TWOferBRIDGE
"imo by far in bridge the least understood concept is how to bid over a jump-shift
( 1M-1NT!-3m-?? )." ....Justin Lall
" Did someone mention relays? " .... Zelandakh
K-Rex to Mikeh : " Sometimes you drive me nuts " .
#4
Posted 2013-August-20, 13:00
Back to the problem. It is possible, I suppose, that RHO has only 1 or 2 spades and LHO no entry, but that doesn't help us anyway, since we can't then set up a pitch nor create an endplay: rho won't hold short spades and the stiff diamond A!
At mps, I'd be very reluctant to risk down 2 since this seems like a fairly normal, if unlucky, contract. Down 1 will probably be average or so.
At imps, it is worth risking 3 imps, for -100 against an easy -50, in order to win 10, but only by the most slender of margins.
We are going to play for a 1=3 shot: the KQ clubs onside.
We lead the club J and duck the cover.
We win the presumed spade play and lead a club to the 10.
Note that this isn't actually even as good as 1=3. While LHO probably doesn't have a stiff club, he may have a doubleton. If so, then unless he has a void in trump or the stiff A, then he ruffs low on the 3rd round.
I don't know the odds that the club play works: only that the odds are slightly less than 25% and that we break even, playing for down one, if the odds drop to about 23% I don't think they do, so I make the play.
#5
Posted 2013-August-20, 13:08
mikeh, on 2013-August-20, 13:00, said:
Back to the problem. It is possible, I suppose, that RHO has only 1 or 2 spades and LHO no entry, but that doesn't help us anyway, since we can't then set up a pitch nor create an endplay: rho won't hold short spades and the stiff diamond A!
At mps, I'd be very reluctant to risk down 2 since this seems like a fairly normal, if unlucky, contract. Down 1 will probably be average or so.
At imps, it is worth risking 3 imps, for -100 against an easy -50, in order to win 10, but only by the most slender of margins.
We are going to play for a 1=3 shot: the KQ clubs onside.
We lead the club J and duck the cover.
We win the presumed spade play and lead a club to the 10.
Note that this isn't actually even as good as 1=3. While LHO probably doesn't have a stiff club, he may have a doubleton. If so, then unless he has a void in trump or the stiff A, then he ruffs low on the 3rd round.
I don't know the odds that the club play works: only that the odds are slightly less than 25% and that we break even, playing for down one, if the odds drop to about 23% I don't think they do, so I make the play.
I think the same as you, at MPs I wouldn't risk 2 down. At IMPs ducking the cover sounds best, however your odds are failing to take into account that a ♣KQ lead might be chosen over a ♠QJ one. Opponent's preferences of leads often surprise me.
#7
Posted 2013-August-20, 15:04
I deleted mine )))))))))))))))))))))))))
#8
Posted 2013-August-20, 15:19
gszes, on 2013-August-20, 15:04, said:
KQ clubs onside but a stiff club honor and a singleton trump ace with rho. The
play on the clubs is your only chance and only at IMPS I agree with all others
that would accept down one at MP rather than going for small % shot at game.
You miss the point, how are you getting back to dummy to lead the second club if you lead the J initially, you fail to KQ onside as your only way back to dummy is with a spade which means there's a spade to cash when in with the other club. If you lead small and RHO splits, you can then play small to the J.
#9
Posted 2013-August-20, 16:36
Cyberyeti, on 2013-August-20, 15:19, said:
After RHO wins the ♣J and returns a spade, how do you get back to your hand to cash the good club?
#10
Posted 2013-August-20, 17:00
johnu, on 2013-August-20, 16:36, said:
This is also true if you're trying this, you have to lead the jack and duck the club that covers, not doing that at pairs and not really sure I want to do it in a tight teams match either.
#11
Posted 2013-August-20, 17:09
#12
Posted 2013-August-20, 17:14
patroclo, on 2013-August-20, 12:30, said:
Duck .
If East then returns another ♠, you lead the ♣ to your A 10 , playing East for the K .
If East returns a ♦, you will still win on the board for the ♣ lead, unless West puts up the Ace.
In that case you will get a losing ♠ pitch on the long ♦.
Once the ♠ loser is taken care of, only then can you start trumps ( ♥ ).
EDIT: I corrected the misprinted "loser" to ♠ .
TWOferBRIDGE
"imo by far in bridge the least understood concept is how to bid over a jump-shift
( 1M-1NT!-3m-?? )." ....Justin Lall
" Did someone mention relays? " .... Zelandakh
K-Rex to Mikeh : " Sometimes you drive me nuts " .
#13
Posted 2013-August-20, 19:23
PhilKing, on 2013-August-20, 17:09, said:
I literally don't believe you.
I figuratively get what you say
#15
Posted 2013-August-21, 03:26
mikeh, on 2013-August-20, 13:00, said:
If you have 9 tricks with little chance to play for ten opposite what many would consider nowadays a sound opening and neither much duplication, how great can your chances be for 12 tricks?
Laying a trap for the opponents to step in works not only for big clubbers.
Being white there is something to be said to make only a limit raise with the North hand
Rainer Herrmann
#16
Posted 2013-August-21, 03:48
rhm, on 2013-August-21, 03:26, said:
Quite a lot to be said for it, in fact. If opener isn't balanced he will nearly always accept a game invitation, so for constructive purposes the raise to 4♥ mainly caters for a 5332 minimum. With two 5332 shapes you often find that there's duplication, and that queens and jacks aren't pulling their weight.
#17
Posted 2013-August-21, 03:56
mikeh, on 2013-August-20, 13:00, said:
...
we break even, playing for down one, if the odds drop to about 23%
Assuming they're in game at the other table, the cost of an extra undertrick is is two IMPs, so the threshold is
2 / (2 + 10) = 16%
If they're in a partscore on the same lead, it's slightly lower. The cost is one IMP (-240 instead of -190), and the gain is seven, so the threshold is
1 / 7 = 14%
#18
Posted 2013-August-21, 06:47
PhilKing, on 2013-August-20, 17:09, said:
Hope you weren't including my post # 2 which was a precursor to my brilliant conclusion ( if I must say so myself ) in post # 12 .
TWOferBRIDGE
"imo by far in bridge the least understood concept is how to bid over a jump-shift
( 1M-1NT!-3m-?? )." ....Justin Lall
" Did someone mention relays? " .... Zelandakh
K-Rex to Mikeh : " Sometimes you drive me nuts " .