Modern Defense: Geller's System

An entry in the Encyclopedia of Chess Openings (ECO B07), reached after 7 half-moves: 1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. c3.

Black rook — Use ← → arrows or click moves to step through.

Black knight — Use ← → arrows or click moves to step through.

End of this line

No further variations branch from this position in our database. To explore neighbouring ideas:

About this opening

Modern Defense: Geller's System is an opening in the Encyclopedia of Chess Openings, classified under code B07. ECO group B (B00–B99) covers semi-open games (1.e4 with Black playing anything other than 1…e5), with the Sicilian, French, Caro-Kann and Pirc/Modern at its heart. This particular variation is reached after 7 half-moves from the starting position, with the move sequence 1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. c3.

It belongs to the Modern Defense family. Within that family this is a sub-variation (the Geller's System line).

The opening sequence in prose form: 1.e4 g6, 2.d4 Bg7, 3.Nf3 d6, 4.c3. From this position the encyclopaedia records no further canonical continuations — practical play branches into unnamed transpositions or returns to the parent line for alternative ideas.