Bridge
Gerber
Pure ace-asking convention over a NT opening.
sequence
1NT/2NT — 4♣ — (4♦/4♥/4♠/4NT)how it works
A direct jump from partner's 1NT or 2NT opening to 4♣ is Gerber — the ace-asking equivalent of Blackwood, used where 4NT would be a natural quantitative slam invitation. Responses: 4♦ = 0 or 4 aces, 4♥ = 1, 4♠ = 2, 4NT = 3. A subsequent 5♣ asks for kings the same way.
used in 20 places
- 4♣4♣after 1N — P
- 4♦4♦after 1N — P — 4C — P
- 4♥4♥after 1N — P — 4C — P
- 4♠4♠after 1N — P — 4C — P
- 4NT4NTafter 1N — P — 4C — P
- 5♣5♣after 1N — P — 4C — P
- 5♦5♦after 1N — P — 4C — P — 5C — P
- 5♥5♥after 1N — P — 4C — P — 5C — P
- 5♠5♠after 1N — P — 4C — P — 5C — P
- 5NT5NTafter 1N — P — 4C — P — 5C — P
- 4♣4♣after 2N — P
- 4♦4♦after 2N — P — 4C — P
- 4♥4♥after 2N — P — 4C — P
- 4♠4♠after 2N — P — 4C — P
- 4NT4NTafter 2N — P — 4C — P
- 5♣5♣after 2N — P — 4C — P
- 5♦5♦after 2N — P — 4C — P — 5C — P
- 5♥5♥after 2N — P — 4C — P — 5C — P
- 5♠5♠after 2N — P — 4C — P — 5C — P
- 5NT5NTafter 2N — P — 4C — P — 5C — P