Fishbein
Fishbein is a convention used after an opponent has opened the bidding with a preempt. A direct double is for penalties; an overcall of the cheapest available suit is for takeout. Examples:
| Opener | Overcaller | |
3 | Dbl | For penalties. |
| Opener | Overcaller | |
| 3 | 3 | Showing a takeout double of 3. |
Fishbein only applies in the direct position; it is off in the balancing seat.