DOPI, ROPI and DEPO
Defense after opponents bid over 4NT (ace-asking).
DOPI
If your opponents bid a suit over 4NT that is lower ranking than your suit.
- Double: 0 or 4 aces
- Pass: 1 ace
- 1 step: 2 aces
- 2 step: 3 aces
When a 0314 Roman Keycard Blackwood bid of 4NT is overcalled.
- Double - Zero or three keycards
- Pass - One or four keycards
- Cheapest suit - Two keycards without the queen of trumps
- Second Cheapest suit - Two keycards with the queen of trumps
- Third Cheapest suit - Three keycards.
When a 1430 Roman Keycard Blackwood bid of 4NT is overcalled.
- Double - One or four keycards
- Pass - Zero or three keycards
- Cheapest suit - Two keycards without the queen of trumps
- Second Cheapest suit - Two keycards with the queen of trumps
- Third Cheapest suit - Three keycards.
ROPI
Is used when your opponents double 4NT.
1 |
3 |
4NT | Dbl |
Right-hand opponent doubles 4NT instead of bidding 5.
Some pairs play this way to tell their partners they want to sacrifice,
or that they want partner to lead his suit (clubs) without actually bidding it --usually because they're vulnerable and they're scared of being doubled.
Other partnerships might play double as honor showing in partners suit(A or K) giving the leader the option of under leading his suit with a suit preference card, or bidding on if they choose.
Other partnerships might play double asking for the lead of the higher or lower of unbid suits. It pays to find out.
If your opponents double 4NT.
- Redouble: 0 or 4 aces
- Pass: 1 ace
- Cheapest suit: 2 aces
- 2nd Cheapest suit: 3 aces
When a 0314 Roman Keycard Blackwood bid of 4NT is doubled.
- Redouble - Zero or three keycards
- Pass - One or four keycards
- Cheapest suit - Two keycards without the queen of trumps
- Second Cheapest suit - Two keycards with the queen of trumps
- Third Cheapest suit - Three keycards.
When a 1430 Roman Keycard Blackwood bid of 4NT is doubled. (RIPO)
- Redouble - One or four keycards
- Pass - Zero or three keycards
- Cheapest suit - Two keycards without the queen of trumps
- Second Cheapest suit - Two keycards with the queen of trumps
- Third Cheapest suit - Three keycards.
DEPO
What if their suit is higher than yours? Since their suit is higher-ranking, DEPO is better.
- Double - shows and even number of Aces (keycards if playing RKB)
- Pass - shows and odd number of Aces (keycards if playing RKB)