|Starting position of the lesson: Alekhine - Marshall, 1925|
Sorry for the mix up, but it won’t kill the lesson.
Three installments have been posted. We are taking a position (see diagram) from an Alekhine – Marshall game in 1925. First we showed how Alekhine masterfully turned White’s small opening advantage into an 18 move crush.
IM Silman’s notes are marked with [JS] and the student’s [rating] show his thoughts. In this installment we will see how an  player approached this same position.
 White has a pawn majority on the kingside. Black’s pieces are farther advanced, but with a bit less development. White’s pawn majority gives him a space advantage on the kingside so Black would be advised to castle on the queenside. White will castle kingside and play f4.
[JS] White realized that Black should not step into the brunt of White’s onrushing pawns. This is excellent. However, like the student before him (1500), White fails to see potential weakness of the dark squares in the center. This seems to be a typical weakness of the amateur player. He can see tactical threats to win material or go after the king, but he has real trouble seeing that a SQUARE can also be a target.
1. O-O Be6
[JS] The student tended towards excessive optimism. While confidence is important to have, you also need a touch of realism. Like the 1500 player before him, he is not really giving the possibilities of his opponent a thorough examination.
In general, the initiative in open positions will go to the player who is the first in control an open central file. In the game by Alekhine, he went ahead with his pawn expansion ONLY AFTER stopping any counter-play on the d-file.
2. f4 ..........
 It looks risky for Black now.
2. ....... Qd4+
3. Kh1 O-O-O
[JS] Incredibly, we reached the same position as the 1500 game, and the student soon blundered.
4. ...... Bc4
5. Re1 Qf2
6. Qc1 Rd2