Focus on Bidding Danny Roth

"This is not a book about systems, nor is it a book about conventions (although I confess I shall attempt to persuade you to adopt one or two in the course of it). This is a book about bidding and the places in the auction that we (and I use the word advisedly) go wrong. I don't care whether you prefer to play a weak or a strong notrump, or eight-card majors, or the Purple Spotted Forcing Club. But I do care about how you decide when to bypass a major to bid one notrump, or what constitutes a decent opening bid, and why, and what sequences you regard as forcing. You see what I mean about 'bidding' as opposed to 'system'?" - Danny Roth Это и многое другое вы найдете в книге Focus on Bidding (Danny Roth)