Hand 433 — RKCB: Asking for Keycards

Play this hand
Dealer
S
User Side
N/S
Contract
6S
Declarer
S
Tricks Makeable
12
Recommended Lead
JD
Vulnerability
None
System
SAYC

Planning

The 5 key cards in RKCB are the 4 aces and the K of trumps. We will use 30/41 as our guide.
It is essential that you and your partner are in agreement and understand whether you are using RKC or just normal Blackwood.
5 clubs will mean 0 or 3 key cards, 5 diamonds will be for 1 or 4 and 5 hearts will be for 3 or 5.
In addition we introduce the Jacoby 2NT convention in reply to 1 hear or spade.
In reply to 1 of a major, 2NT shows 4 card support and an opening hand.

The Deal

North
10 8 7 4
Q 5
K Q 3
A K Q 2
West
J 5
J 9 8 6
J 10 8 6
9 5 4
East
3 2
A 10 7 3 2
9 5 4
J 10 6
South
A K Q 9 6
K 4
A 7 2
8 7 3
North: 16 HCP, 4-2-3-4 (bal)
East: 5 HCP, 2-5-3-3 (bal)
South: 16 HCP, 5-2-3-3 (bal)
West: 3 HCP, 2-4-4-3 (bal)

Bidding Sequence

S W N E
1SPass2NTPass
4SPass4NTPass
5CPass6SPass
PassPass

Final Comments

Looking at the hands for losers, we can see
0 spades
1 heart
0 diamonds
0 clubs
With the cards as they are, there is no way to rescue the heart, so 6S bid and made