






DOPI, ROPI, DEPO, REPO 


– when your Blackwood/Gerber is interfered with. 





DOPI (Double 0 Pass 1) and ROPI 


It does not matter if you play 4♣ or 4NT to ask for aces (or key cards), if the opponents bid over your asking bid then obviously things change. I have witnessed this at the club when a laydown 7NT (13 tricks off the top) was missed. 





Let's assume you are playing simple Blackwood, you have 2 aces and partner bids 4NT to ask. Your response is 5♥, but what if your RHO sticks in a bid of 5♦ ? The answer is the DOPI convention:  





Double 
= 
1st step 
(0 aces) 
Pass 
= 
2nd step 
(1 ace) 
Next bid (so 5♥ here) 
= 
3rd step 
(2 aces) 
Next but 1 bid (so 5♠ here) 
= 
4th step 
(3 aces) 



etc... 





The same principle applies if you play RKCB, Gerber or whatever. Note that the lower responses (double or pass) allow for a possibility of defending against a doubled contract by opponents. Often a good idea if you are short of aces/key cards! 





If RHO doubles the asking bid, then there is a similar convention (ROPI) 





Redouble 
= 
1st step 
(0 aces) 
Pass 
= 
2nd step 
(1 ace) 
Next bid (so 5♣ here) 
= 
3rd step 
(2 aces) 
Next but 1 bid (so 5♦ here) 
= 
4th step 
(3 aces) 



etc... 





Now I have been careful to mention steps here. For example, If you play standard RKCB then 


1 st step = 0 or 3 key cards, 2 nd step = 1 or 4 key cards etc. 


(the other way round if you play 1430). 








DEPO (Double Even Pass Odd) and REPO 


This is a less popular variation of the above but has the advantage that the opponent's can always be doubled for penalties. 





So when your Blackwood bid is overcalled it's REPO:  





Double 
= 
Even 
(0, 2 or 4 aces) 
Pass 
= 
Odd 
(1 or 3 aces) 






And if your Blackwood bid is doubled:  





Redouble 
= 
Even 
(0, 2 or 4 aces) 
Pass 
= 
Odd 
(1 or 3 aces) 






You have to decide if you prefer D(R)OPI or D(R)EPO. I actually know of one pair that play 


D(R)OPI at the four level and D(R)EPO at the five level. I guess that that makes sense – you are more likely to want to penalise the opponents at the five level. 









Pattaya Bridge Club  
www.pattayabridge.com 




