Page 0028

28 English Bridge June 2019 www.ebu.co.uk

´ Q 2

™ A K Q 10 3

t 5 4

® Q J 7 3

´ A 7 6

™ J 9 2

t A 8 3

® A K 8 4

´ A 7 3

™ 9 8 4

t A 2

® A K 10 6 5

West East

1NT1 2t2

2™ 3®3

4t4 ?

1 15-17

2 transfer to hearts

3 natural

4 good hand, club & heart fit

West East

1´ 2t

3™A 3´

4NT 6®

7t

'Simple' Double Key Card by David Gold

click

link

I

t sounds scary- but it isn't, I promise. In some

auctions you quickly find out that you have two

fits and in these cases it can be important to

know key cards in both suits when investigating

slam - Double Key Card or Six Ace Key Card.

Lets say you play normal RKCB with 4 aces, the

king of trumps and the queen of trumps being the

relevant cards. Then after 4NT:

5® = 1or 4 }Some people play 5® and 5t

5t = 0 or 3 }the other way round

5™ = 2 or 5 no queen

5´ = 2 or 5 + trump queen

In double key card, where there are two known

fits, there are six key cards and two trump queens.

The responses are simple,

5® = 1 or 4 }next step asks for trump queen with

5t = 0 or 3 }steps - none, lower, higher, both

5™ = 2 or 5 no queen

5´ = 2 or 5 + lower queen

5NT = 2 or 5 + higher queen

6® = 2 or 5 + both queens

Here is a hand I held recently in a strong

international event, sitting East:

the very least so you decide to bid 4NT - double key

card. Partner bids 5® (1 or 4, must be 4). Give

partner something like:

SO WHEN DOES IT APPLY?

Our rule is simple. If we agree two suits within the

first five bids then our 4NT is RKCB for both suits.

Here is one more example:

´ A K J 5 3 ´ Q 8 2

™ 7 ™ A 5 3

t K J 8 7 t A Q 10 3

® A K 3 ® 7 4 2

N

W E

S

In hearts you have 11 tricks

but in clubs you actually have

12 on fairly normal breaks so

you can bid 6®. Annoyingly

partner actually had the

following hand:

With hearts breaking you

make 6™ and 6NT as well as

6®, although they actually

missed slam altogether in the

other room.

West opened 1´ and splintered after hearing 2t

from partner. East's 3´ set the double fit within the

first five bids. West used 4NT to ask for double

RCKB and 6® showed two key cards with both

queens. West could now picture five spade tricks,

four diamond tricks, two club tricks, one heart trick

and a ruff in hand for the 13th trick. It's an easy

game! r

It is not clear how best to proceed but holding so

many points and such good hearts it is likely

partner will have the ®AK, tA and the ´A or ´K at

Index

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