Summary of analysis (author’s novelties are marked by symbol “AN”)

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5

Paragraph 1: 4...Nbd7 5.e3 dcAN

(with the idea c7-c6) with unclear position.

Paragraph 2: 4...c6 5.e3 dcAN 6.Bc4 Nbd7

with unclear position. If white plays 7.Nf3, then black plays 7...Bb4 or 7...Qa5 with unclear position in both cases. If white doesn’t play 7.Nf3, then black plans e6-e5 (with previous preparation!), and the position is unclear too

It should be noted, that Paragraph 2 is extremely important for exact appraising of these moves (4.Bg5!? and 3.Nc3!?) !!

Paragraph 3: 4...Nbd7 5.e3 c6 6.a3 dcAN

[6…Be7 7.Nf3 with unclear position, where white fights for advantage (this is a new appraisal)!] 7.Bc4 Qa5 [with the idea Ne4; with the idea Nd5] with unclear position.

Author: Y.Bukayev