411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e6/2. Nc3/2...d5
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Queen's knight C00 Queen's knight
2...d5
Black puts their pawn in the centre. Play can transpose into the Paulsen variation after /3. d4/ or the Two-knights after /3. Nf3/.
/3. exd5/ transposes into the exchange French, but is somewhat inaccurate due to the knight blocking the c3-pawn, which would usually support the d4-pawn.
Theory table
Paulsen variation 3. d4 Two knights variation 3. Nf3 Exchange variation 3. exd5 exd5 4. d4
References
See also