Monday, November 24, 2014

Sunday, November 23rd 2014

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Board 7
South Deals
Both Vul
8 5 4 3
9 8 5 4 3 2
10 6
3
K Q J 10
J 6
K 5
K Q J 5 4
N
WE
S
2
A K 10
Q J 8 7 4
A 9 6 2
A 9 7 6
Q 7
A 9 3 2
10 8 7


West opens either 1S or an off-shape 1NT; the combination of clubs and spades makes for an easy 1S rebid, while the lack of Aces and the presence of a high card in both doubletons argues for notrump. It often pays to open 16 hcp with 1NT*, but lacking an Ace this hand rates closer to 15. It looks like I opened 1C and I do think the hand looks like it belongs in a black suit.

With the club fit, East is strong enough for a 2D strong jump. West rebids 2S and East continues with 3C. West is worried about the lack of Aces but a five-loser hand opposite a jump shift smells like slam. Perhaps West continues with 4C, East control bids 4H, West bids 4NT, East replies 5H (two Aces or key cards.) Yikes! Hope partner reads 5S correctly as a request for 5NT -- and hope he's got a heart stop! East does have time to drive out the two Aces and claim +660.

If East responds 1D, either from lack of a strong jump option or concerns about the suit quality, West rebids 1S and East needs to signal a game-forcing hand. Over a forcing 3C, West may bid 3H artificially (4th suit) and East can bid 3NT -- but should feel he really hasn't shown his slam interest.

Over 1NT, does East have a way to show or ask about minor suits? If you play 1NT-2S as a relay to 3C, a simple extension helps with this sort of hand: over partner's (forced) 3C, 3 of either major shows a singleton with one or both minors and at least mild slam interest (i.e., strong enough for 5 of a minor to be reasonable landing spot.) Most of the time opener will have the singleton covered and the bidding ends at 3NT, but imagine if opener held Jxx Qx AKx KQJxx.

Lacking any special agreements, I expect 1NT-3NT or 1C-1D; 1S-3NT was the auction at most tables, both good enough on this and most occasions.

Board 10
East Deals
Both Vul
7 5 3
A 8 7 6
Q J 5
K Q 6
Q J 9 6 4 2
5 4
10 9 3 2
J
N
WE
S
A 8
Q 10 9
8 7 6 4
9 8 7 5
K 10
K J 3 2
A K
A 10 4 3 2


South, too strong for 1NT, opens 1C. West is too weak for a vulnerable preempt, so North should be able to reply 1H. South is between a 3H and 4H raise; my partner tried 2NT but note that that bid, while showing 18 or 19 hcp, is not forcing -- responder may have scraped up 1H on 4-5 hcp and some shape. Most of South's values are in the short suits so I think I'd settle for a 3H invitational jump. North has extras but 12+18 = 30, about a trick short of slam. As it happens, hearts split 3-2 and two finesses work, so slam makes but at very poor odds.

Board 11
South Deals
None Vul
Q 10 6 3
K 3
K Q J 9
8 4 3
A 9 2
J
8 4
A K J 10 9 5 2
N
WE
S
K J 8 7 5 4
A Q 9 8
A 3
Q
10 7 6 5 4 2
10 7 6 5 2
7 6


West opens 1C. A bold East will overcall in the chunky diamond suit, but I expect most passed. East has 16 hcp and good shape; no need to discount the stiff Queen in partner's suit, it may set up some red-suit discards. Note how important the red Aces in suits with losers are for this sort of valuation. East can make a strong jump (2S) or simple 1S reply. Plausible auctions:

1C-2S
3C-3H
3S-4NT
5H-? If that's two Aces, East should continue with 5NT, but playing RKCB, the missing Queen argues against grand slam and East should sign off at 6S.

1C-1S
2C-2H
3S-4NT, etc.
The above assumes 2H is both forcing and game invitational. That, however, makes it hard for responder to bid a minimal 5-4 hand; some partnerships extend the New Minor gadget to when opener rebids the minor.
That would lead to:
1C-1S
2C-2D* (*artificial, about 11+ with 5+ spades)
3S-4NT, etc.

With the spade finesse and solid clubs, thirteen tricks are easy at clubs or notrump. The recap claims 7S is also makeable despite the 4-0 split, but that's trickier.I suspect declarer needs to run the clubs, forcing North to ruff, but even making 6 looks like a challenge. With two long suits sometimes it pays to bid 6NT if you can come to 12 tricks as long as either suit behaves.

Board 23
South Deals
Both Vul
A K 7 4
10 6
K 10 5 4 2
J 5
J 10
J 4 3 2
8 3
K Q 7 6 3
N
WE
S
9 8
9 7 5
J 9 7
A 10 9 8 2
Q 6 5 3 2
A K Q 8
A Q 6
4


South opens 1S. If game were the only consideration, North would simply bid 4S, but that bid is normally reserved for a "shape" raise such as Kxxx x Axxxx xxx (five trumps, a singleton, and about 6-9 hcp.) With four trumps Jacoby 2NT is a reasonable option, but the best description of this hand is to force with 2D followed by 4S. This carries the message "diamonds, spades and nothing else." South loves it and 6S is reached by way of Blackwood or Key Card.

Using Jacoby 2NT:
1S-2NT
3C-3S
4NT, etc. South shows a singleton and North makes a neutral rebid, suggesting he doesn't hate the club singleton but does not have extras; that's enough for South to carry on to slam.

Board 25
North Deals
E-W Vul
A Q
8 7 3
J
A Q J 10 8 6 4
10 6
K Q 10 6 5 2
10 8 7
9 2
N
WE
S
J 8 4 3
9
A Q 5 4 3
7 5 3
K 9 7 5 2
A J 4
K 9 6 2
K


North opens 1C; the hand is much too strong for any sort of preempt. A few Easts might overcall but that's quite a stretch when vulnerable. South responds 1S; lacking a fit the hand is not strong enough for a jump. West also cannot preempt vulnerable. North's powerful suit argues for a 3C rebid, although jumping with this sort of hand leaves a problem when North has an extra King or so. On the other hand what can North rebid after 1C-1S; 2C-2D ? Jumping now takes the bidding past 3NT. While the recap shows that 6C can be made, that looks very difficult on a heart lead. Perhaps declarer can win the Ace, take the AQ of spades, and then run the clubs. When a diamond is eventually led East cannot lead another heart and must let declarer back in dummy for two more tricks.

Friday, November 21, 2014

Friday, November 21st 2014

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Board 13
North Deals
Both Vul
A J 10
K Q 8 2
A K J 3
Q 9
6 3
J 9 3
10 5 2
A K 8 5 4
N
WE
S
8 7 5
10 6 5 4
Q 6
J 10 6 3
K Q 9 4 2
A 7
9 8 7 4
7 2

North opens 2NT (20-21). South, with 9 hcp and 5242 shape, suspects there may be a slam, but there isn't much room to explore over 2NT. This looks like a good time to try visualizing: pick 20 hcp and see whether slam would be a laydown. Perhaps Axxx xx Axx AKQJ ? Only 18 hcp and, barring a 5-0 trump split, 12 easy tricks. South isn't strong enough to pursue slam without a fit, so it seems reasonable to transfer first, rebid 3NT, and reconsider if partner corrects to 4S. North does so and South can invite by way of a 5H control bid or resort to 4NT. Over 5H, North signs off at 5S for lack of a club control. Blackwood, of course, should lead to slam -- South absolutely should not bid 4NT and then sign off missing only one Ace; odds are very strong partner has the King of clubs. Unfortunately, he doesn't, and East is more likely to lead the Jack from J10xx than anything else, so slam should fail, but East could as easily have the King of clubs or such and lead something else -- sometimes you'll steal a slam if you don't tell them what to lead. No one bid slam on this one.

Board 20
West Deals
Both Vul
10 7 4 3 2
10 4 2
9 8 5
A 4
K 6 5
K Q 8 5
10 6 4
J 6 3
N
WE
S
A
A J 6
A K Q J 7 3
K 7 2
Q J 9 8
9 7 3
2
Q 10 9 8 5

After two passes, East must decide between opening 1D or 2C. With 8 running tricks and the chance for a ninth on the opening lead, it looks right to force to 3NT. An opening 1D bid probably won't be passed out but a leap to 3NT would be normal on a weaker hand, so 2C looks right. West replies 2D (waiting or semi-positive) or 2S (steps) or a natural 2NT (8-10) if 2D would be strictly negative. While most prefer not to have responder "steal" notrump, West's hand is actually fairly suitable to be declarer at notrump.

Some plausible auctions:
2C-2D (waiting, 0+)
3NT-6NT

2C-2D (semi-positive, at least an Ace or King or perhaps 2 Queens; forcing to game)
2NT-3C (Stayman)
3D-4NT (invitational)
6NT

2C-2S (steps, 7-9 hcp)
2NT-3C
3D-3NT
4NT-6NT East might  rebid 4D, which  is also a slam invitation.

2C-2NT (8-10, no suit worth bidding)
4D-4H (sets suit; heart control)
4NT-5C (no Ace or 0-3 key cards)
6D or 6NT

Only three pairs reached a small slam; we overbid to 7NT due to an RKCB mixup.

RKC Blues:

Roman Key Card Blackwood is an excellent convention; having strong trumps is crucial for successful slam bidding. However, confusion over which suit is "key" is often a problem. Anyone playing this convention should have a clear agreement about what suit is key. Here are some suggestions (pick one):

KISS: If we haven't agreed on a suit, 4NT is simple Blackwood.
Implied Fit: If we haven't agreed on a suit, 4NT asks about the last NATURAL suit bid.
SJS Exception: As with Implied Fit, unless responder makes a strong jump shift and then bids 4NT at his next opportunity; that would ask about responder's suit regardless of what opener rebid.

There's one more exception to all of the above: after a 2C opening, if anyone jumps in a suit, they are "setting the suit" and asking for immediate control-bidding. Examples: 2C-3H; 2C-2D-3S. In such a case 4NT logically asks about the "set" suit. It might surprise you that responder is allowed to set trumps over 2C; I've never actually seen that done, but that IS the default meaning of 2C-3D/3H/3S/4C if you haven't redefined those bids. Responder might have x AQJ109xxx xx xx, for example; there is little chance that any other suit should be trumps. If opener were void, responder's hand would be worthless anywhere but in hearts!

Our disaster on board 20 came after 2C-2D (semi-positive); 3D-3H; 4NT -- under the Implied Fit, rule, I replied with one key card; partner thought diamonds were "agreed" and bulled on to grand slam. While it's understandable for East to think diamonds should be trump, partner doesn't know that!


Sunday, November 2, 2014

Sunday, November 2nd 2014

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Board 1
North Deals
None Vul
A K Q J 7 4
7
5
A 10 9 4 3
J 8 6 5 4
A Q J 10 2
6 5 2
N
WE
S
9 8 6 2
9
8 7 4 3
K Q J 7
10 5 3
A K Q 10 3 2
K 9 6
8

North opens 1S, South responds 2H and North shows extras in most standard methods by rebidding 3C. (I recommend this even playing 2/1 Game Force; minimum unbalanced hands can rebid their major without promising extra length.) Such a rebid forces to game so South can support spades with a simple 3S. This leaves room for North to make a slam try (4C) and South cooperates by showing a diamond control (4D.) While North has a promising hand partner's original response suggests wasted values; North pauses at 4S. South has a massive source of tricks, but with no sure side entry and only three trumps it may not be possible to pull trumps and then use all the hearts; of course, the suit may simply run. North's bidding has been fairly strong so I think 4NT is justified. Playing RKCB North shows 3 key cards as well as giving a positive reply to South's Queen ask (5H.) 6S proves very unlucky but it seems to me it should be bid.

East probably leads his singleton heart against 4S, though the "textbook" recommendation with four trumps is to try and force declarer to ruff. Against such strong bidding that seems unlikely to succeed. What about leading against a slam? If North's failure to bid 5NT suggests partner has a key card, East will score a ruff if partner has either major suit Ace. Otherwise, sometimes the singleton lead fouls declarer's communications -- which is what happened to me. I could not pull trumps and return to dummy to use the hearts, so I was forced to lead a second heart and pitch my losing diamond. East ruffed and I could not avoid at least one club or trump loser.

Board 8
West Deals
None Vul
Q J 2
K 7
A Q 10 6 2
9 7 2
K 4
10 9 2
K 9 7 3
A 10 5 3
N
WE
S
9 7 6 3
J 8 5 3
5 4
K Q 6
A 10 8 5
A Q 6 4
J 8
J 8 4

North opens 1D or perhaps 3D, but with two quick tricks and 11 working hcp I'd rate the hand too strong for a preempt. Either way South has a massive hand and forces to either 6D or 6S. At our table North opened 3D, South employed RKCB, North replied 5S (two diamond key cards plus the Queen) and South raised to 6S! This proved unfortunate when East lead a club and West was able to guess the diamond void based on the auction. As two pairs failed to bid slam and another overbid to 7NT (!), perhaps 6D is best even at matchpoints, but 6S was a heavy favorite to make.

After a 1D opening, South jumps to 2S (strong.) North rebids 3D. I play an exception to the usual "asks about the last suit" here -- if responder jump shifts and then follows with 4NT, it's RKCB for responder's suit, regardless of what opener rebid. Here South does not need information about spades and so raises to 4D. North control bids 4H and now South continues with RKCB for diamonds. If South then chooses 6S West will be on lead and may hope to score two clubs or a club and a heart, but the diamond threat and matchpoint scoring suggests banging down the Ace of clubs anyway. The extra diamond length in dummy may suggest the deadly diamond switch.

Not playing strong jumps the bidding starts 1D-1S; 2D and South, somewhat stuck for a forcing bid, leaps to 4NT for much the same result as above. Strong jumps are most useful when responder is uncertain about whether the combined hands add up to slam; powerhouses like this aren't too difficult to bid.

Board 15
South Deals
N-S Vul
K J
10 7 4
A Q 2
A 8 7 6 2
4 3 2
Q 5 3 2
K 10 7 6
K 10
N
WE
S
Q 10 9 7 6 5
K 9 6
9 8 4 3
A 8
A J 8
J 5
Q J 9 5 4 3

A "double-dummy" slam; at the table I would expect 1C-3NT or the equivalent. At 6C declarer might fail on the percentage play of trying to drop the King of clubs, but against 3NT, with no knowledge of the big fit, West covers the Queen of clubs, hoping declarer will finesse against the ten. (Lacking the ten, it would be normal for West to duck the first club and for declarer to rise with the Ace! Odds favor a 1-1 split.) Throw in the winning heart finesse and +690 rolls in.

Board 23
South Deals
Both Vul
A 10 5 4
J 10 6
6
J 7 5 3 2
Q J 7
9 5 3 2
Q 9 5 2
8 6
N
WE
S
K 9 6 3 2
K 8 4
A K 10 3
4
8
A Q 7
J 8 7 4
A K Q 10 9

South opens 1C, North responds 1S and South reverses to 2D. I'm reluctant to force the bidding with only 16 hcp and a stiff in responder's suit, but the strong clubs make up for all. Unfortunately, many pairs have no clear agreements over reverses; the default, if there is one, would be that 2S, 3C and 3D would all be non-forcing and responder must jump or bid the fourth suit (2H) to force. Lebensohl is one popular alternative, Ingbergman another. Here responder lacks 8 hcp but expects a 5-5 fit -- should North bid or force to game or settle for 3C? With basically one cover card plus the singleton opposite partner's second suit, 5C looks like a stretch. But opener has little in diamonds and twelve tricks roll in with the successful heart finesse. Top scores went to 3NT which looks to be a 50% shot; five clubs making six would've been a near top. Hands with a 5-5 minor suit fit may be an exception to the general principle of avoiding five of a minor at matchpoints.