2.Nc3 Nf6 3.Bg5: the early pin is variation 5 of 6 in the Against the Dutch course, a intermediate opening course for White (ECO A80). It runs 18 moves and begins 1. d4 f5 2. Nc3 Nf6 3. Bg5 d5 4. Bxf6 exf6 …. White develops the knight first and pins the f6 knight with 3.Bg5. After 3...d5 White takes on f6 and gives Black doubled f-pawns. The knight goes to f4, the h-pawn marches, and White has easy play. In the lesson every move is explained on a board and then drilled; it is free.
Move by move
1. d4 – White takes the centre.
1... f5 – The Dutch Defence.
2. Nc3 – White develops and prepares a quick push to e4.
2... Nf6 – Black develops and covers e4.
3. Bg5 – The bishop pins the knight, which guards e4.
3... d5 – Black holds e4 with a pawn.
4. Bxf6 – White trades the bishop and spoils Black's pawns.
4... exf6 – Black takes back toward the centre and opens the f8 bishop.
5. e3 – White opens the f1 bishop and keeps the centre solid.
5... Be6 – Black develops and guards d5.
6. Nge2 – The knight heads for f4.
6... c6 – Black supports d5.
7. Nf4 – The knight hits the e6 bishop.
7... Bf7 – The bishop steps back and keeps guarding d5.
8. Bd3 – White develops and aims at the f5 pawn.
8... g6 – Black supports f5.
The lesson goes on for 2 more moves, each with its explanation.