Semi-Slav Defense: Botvinnik Variation, Alatortsev System

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 c6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5 9.Nxg5 Nd5

ECO D44

The Semi-Slav Defense: Botvinnik Variation, Alatortsev System is a chess opening line in the Semi-Slav Defense complex, reached after 1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 c6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5 9.Nxg5 Nd5.

It is catalogued under code D44 in the Encyclopaedia of Chess Openings (ECO).

The defining move Nd5 is chosen by Black on move 9.

Study this line with a grandmaster

This position is covered in the Catalan Opening course: a GM-authored repertoire you study move by move, then practice against a human-like AI opponent.

Every chess term used here is defined in the chess terms glossary. Browse all opening courses or the full ECO code index.