The most diffcult is ♣ suit.
1. In this sequence:
1♣ - 1♠ - 2NT - 4♣
Is 4♣ Gerber ?
2. In this sequence:
1♣ - 1♠ - 2NT - 3♣ - 3♦ - 4♣
Someone told me 4♣ is sign-offs. So it's very diffcult if i have a real slam hand.At first, i can't use minor RKCB now, 4N is danger when my trump is ♣. It is worse i don't know how to let my partner know what i want to do. 3nt is mild slam try, he maybe pass. should i start to cue @ 4 level ?
3. In this sequence:
1♣ - 1♠ - 2NT - 3♣ - 3♦ - 3♥
Someone says bid the other major after 3♦ means the other minor slam try.I don't think i will bid 1♠ first when i have stronger ♦suit and sound hand. i like to ask the openner pass or correct to 3♠.But:
1♣ - 1♥ - 2NT - 3♣ - 3♦ - 3♠
What is 3♠ ?
Bridge is too diffclut for me.

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