Modern Defense: Two Knights Variation, Suttles Variation

1.e4 g6 2.d4 Bg7 3.Nc3 c6 4.Nf3 d6

ECO B06

The Modern Defense: Two Knights Variation, Suttles Variation is a chess opening line in the Modern Defense complex, reached after 1.e4 g6 2.d4 Bg7 3.Nc3 c6 4.Nf3 d6.

It is catalogued under code B06 in the Encyclopaedia of Chess Openings (ECO).

The defining move d6 is chosen by Black on move 4.

One named continuation branches from this position: the Tal Gambit.

Named variations

• Modern Defense: Two Knights Variation, Suttles Variation, Tal Gambit — ECO B06

Do you want to learn openings?

Start with a GM-authored repertoire you study move by move, then practice against a human-like AI opponent:

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