The idea behind Roche is to try finding game opposite an ACOL weak 1NT when your side holds two (semi-)balanced, 12+ point hands. Playing traditional methods, the auction might otherwise go
Responses to the
|Pass||4+ clubs, no 5-card suit, and no interest in game. For example, a weak 4333.|
|2||Natural, 5+ diamonds, non-forcing.|
|2||Natural, 5+ hearts, non-forcing.|
|2||Natural, 5+ spades, non-forcing.|
|2NT||Natural, invitational to 3NT.|
Roche originated in the UK but I don't know who (or where) it was named for. I also cannot find more information about the 3-level responses. Presumably they show good hands with invitational or game-forcing values. If you have any idea, please let me know.
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