This call is alertable.
A forcing pass is a pass which forces the partner to bid if the opponent in-between passes.
Examples[]
DOPI[]
When the opponent interfere with the 4NT Blackwood bid, if DOPI is agreed, then pass is artificial and forcing. It is technically not a bid. In this case, pass means 1 Ace (or 1 key card if playing RKCB). After passing, partner must bid again as this pass is not an intention to play in the opponent's contract.
Strong pass systems[]
In some bidding systems, a pass when the bidding is not opened indicates a strong hand. In this case, the partner must open the bidding if the opponent in-between also passes to prevent passing out. The pass is forcing in this case.
Sacrifices[]
Consider the following bidding:
| South | West | North | East |
|---|---|---|---|
| 1♥ | / | 2♥ | / |
| 4♥ | 4NT* | / | 5♦ |
| / | / |
- Unusual notrump overcall, indicating at least 5-5 in the minors.
In this case, E-W are clearly sacrificing, so the pass by south does not make sense. In fact, it is a forcing pass, forcing North to either double or bid 5♥.