philaretus
11 ( +1 | -1 ) The obvious reply is........4.e4. There's a reason for the normal move 3...Nf6. It's not to defend the Queen's pawn, which is already twice defended.
v_glorioso12
11 ( +1 | -1 ) the reason for Ne7is so the knight can't get pinned. it doesn't have a specific name. it's just the Queen's Gambit Declined/Nc3 Variation
atrifix
33 ( +1 | -1 ) Not sureif 4. e4 is best (the normal move nowadays being not 3... Nf6, of course, but 3... Be7, when 4. e4 just leaves the d-pawn weak). Black could create some trouble by ...Nf5. I would most likely play 4. Nf3--Black's problem being that he cannot develop his KB--and perhaps 5. e4. For example, on 4... c6? then 5. e4 dxe4 6. Nxe4 Nf5 7. c5 is very strong.