kylemeister wrote on 04/18/14 at 15:55:35:
One might think it normal for kids to learn early on that playing too materialistically against the trappy move 2. c4 can result in Black being lost after five moves ...
I agree; how are you going to teach the QGA to kids? "Take the free pawn, but it's not really free, and when White threatens to recapture it don't bother defending it, because if you do you can lose very quickly, except if White plays 1.d4 d5 2.c4 dc 3.Nf3 Nf6 4.Nc3, then you need to prepare to defend the pawn with 4...a6 because if you don't White will get a big center for free...". I mean, what?!?
Kids such as I think we're talking about (complete beginners, not even 1000 strength) don't need opening repertoires anyway. The point of recommending the Tarrasch is this: you explain that with 1.d4, the pawn is already defended by White's Queen and so its very difficult to put pressure on it with pieces (same with 1...d5). Hence, in the Queen's Pawn Games, both players need to try to get their c-pawns involved in the game, and blocking the pawn with ...Nc6 or Nc3 is a mistake. I don't really care that there is something called The Chigorin Defense.
I think that the Tartakower QGD would also be fine, except that at that low level, the kids won't remember 7 moves of "theory" anyway. But at least you can get to 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.Nf3 0-0 6.e3 and explain that Black has only one problem with his game: what to do with the light squared bishop? How to get it into the game? ...b6 looks odd at first, but it allows the bishop to support Black's important central pawn and at some point Black may play ...dxc4 to open the diagonal for the bishop. With the pawn tension in the center, the diagonal isn't
really closed forever. Same with explaining rook moves like Rac1; when there is pawn tension, the file can be opened at any time.
That's about all most kids need, until they become fairly good little tournament players (1400ish?). If my experience is at all typical for teaching large classrooms of kids, you'll have to explain this concept over and over and over.
Don't worry about "repertoires" unless you're giving private lessons to a talented individual.