.../doc/bridge/2over1/rakeshNotes.txt 17 Jul 2020 Some important caveats concerning the 2/1 System: a) 2/1 does NOT apply after a 1C opening. The opening must be 1D, 1H or 1S. b) 2/1 only applies if opener is in 1st or 2nd position, so opener has already seen his partner's Pass. c) 1NT response ONLY has its 6-12 pt meaning and forcing for 1 round if opening bid was 1H or 1S, NOT 1D, and certainly not 1C. d) Any intervention from intervening opponent, except Pass or Double, cancels 2/1 meanings. e) A 2H response to a 1S opening requires 5+ hearts. ------------------------------------------------------------------ An email extract (7 Jul 2020): I've just been re-reading Page 2 of Lesson 1 where it says that there are only 6 game forcing (GF) bids: 1D -> 2C 1H -> 2C 1H -> 2D 1S -> 2C 1S -> 2D 1S -> 2H This raises this question. What does 1D -> 2H mean? I assume 13- points, but how many hearts? And in like vein, I assume that the 3 sequences: 1D -> 2C 1H -> 2C 1S -> 2C are saying nothing about responder's club suit because, for example, his suit might be spades. ------------------------------------------------------------------ Extract of Reply from Rakesh (7 Jul 2020): Looking hurriedly at a few write-ups, I get the impression that a lot of the "other-than-the-standard-six” responses depend on how the partners have agreed to interpret things. I would suggest common-sense usage, if you don’t mind… Taking the cases you mention: 1D -> 2H implies opening-hand points with at least 4 hearts and is game forcing (GF). This would apply also to 1D -> 2S, 1H -> 2S, etc. 1D -> 2C is saying nothing about clubs (i.e. is simply game forcing in a major or NT) 1H -> 2C is saying my clubs are better (or at least no worse) than diamonds 1S -> 2C is saying my clubs are better (or at least no worse) than diamonds or hearts ------------------------------------------------------------------