THE SLAM ZONE: BLACKWOOD (AND ALL THAT JAZZ) – Part 4
The idea of using bids below 4NT to ask for keycards is becoming increasingly popular.
Optional Roman Key Card Blackwood
In this variation you use 4♣ as an optional request for partner to show their keycards. If they are not interested, they respond 4♦. Anything higher, beginning with 4♥, shows keycards in the usual way, starting with 1 or 4. Where responder bids 4♦, opener can still ask for keycards. For example, after:
| N | S |
|---|---|
| 1♦ | 2♣ |
| 3NT | 4♣ |
| 4♦ | 4♥ |
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