9.b3 Ne4: the e4 outpost is variation 3 of 6 in the Tarrasch Defence course, a advanced opening course for Black (ECO D34). It runs 28 moves and begins 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 …. White prepares a bishop on b2 to press on d4. Black jumps to e4 and puts the bishop on f6. After the trades on d4 Black develops the last bishop with tempo and has an easy game. 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... d5 – Black claims an equal share.
2. c4 – The Queen's Gambit.
2... e6 – Black supports d5.
3. Nc3 – White attacks d5 again.
3... c5 – The Tarrasch Defence.
4. cxd5 – White takes on d5.
4... exd5 – Black takes back.
5. Nf3 – White develops.
5... Nc6 – Black develops.
6. g3 – The bishop will go to g2.
6... Nf6 – Black defends d5.
7. Bg2 – The bishop aims at d5.
7... Be7 – Black gets ready to castle.
8. O-O – White castles.
8... O-O – Black castles too.
The lesson goes on for 12 more moves, each with its explanation.
chessGM