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4 is a game bid. In most circumstances, it is a sign off.

As an opening Modifier

A 4 opening is to play and may be preemptive.

After a opening Modifier

After a notrump opening Modifier

  • 4 after a notrump opening is a Texas transfer to 4. It shows 6+ hearts and game-going values.

After a 1 opening Modifier

  • 1--4 is a double jump shift and is typically used as a splinter bid. This shows game-forcing 4+ trump support for opener's spade suit and a singleton or void in hearts.
Bids

1-1-1-1-1NT
2-2-2-2-2NT
3-3-3-3-3NT
4-4-4-4-4NT
5-5-5-5-5NT
6-6-6-6-6NT
7-7-7-7-7NT

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