Note that or + means diamonds or the majors, and not a red suit plus spades, which would be expressed as / + .
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Name: | Traditional | 2 scramble | Cohn | Allerton XX |
Pass | To play | To play | To play | To play
or redouble with good 5/6/ |
NOTE | Some partnerships permit opener to scramble after responder's pass by bidding his suit, or redoubling for rescue, or redoubling to show both minors | |||
Redbl | To play | To play | Stayman | To play |
2 | To play | Balanced hand | To play | To play |
2 | To play | To play | To play | To play |
2 | To play | To play | To play | To play |
2 | To play | To play | To play | To play |
Name: | Minor ask | Krosky | Systems on | Guthrie |
Pass | To play | To play | To play | 3+ or strong
Opener redoubles with 4+, passes otherwise |
NOTE | Some partnerships permit opener to scramble after responder's pass by bidding his suit, or redoubling for rescue, or redoubling to show both minors | |||
Redbl | + | To play | To play | + // |
2 | or | or or or | Stayman | or + / |
2 | + | + // | Transfer to | or + / |
2 | To play | + / | Transfer to | or + / |
2 | To play | + | As without dbl | or + |
Name: | Staveley Wriggle | Gerben | Magic Diamond | |
Pass | To play | To play | To play | |
NOTE | Some partnerships permit opener to scramble after responder's pass by bidding his suit, or redoubling for rescue, or redoubling to show both minors | |||
Redbl | To play | To play | To play | |
2 | or + / or 5 + 4 |
or + / or + | or + / | |
2 | or 4/5 + 4 | To play | or + | |
2 | To play | To play | To play | |
2 | To play | To play | To play | |
2 | Invitational 2-suiter |
Editor's note:
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