About this opening
Modern Defense: Masur Gambit is an opening in the Encyclopedia of Chess Openings,
classified under code B06. 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 10 half-moves from the
starting position, with the move sequence 1. e4 g6 2. d4 Nh6 3. Nc3 f5 4. Bxh6 Bxh6 5. exf5 O-O.
It belongs to the Modern Defense family. Within that family this is a sub-variation (the Masur Gambit line).
The opening sequence in prose form: 1.e4 g6, 2.d4 Nh6, 3.Nc3 f5, 4.Bxh6 Bxh6, 5.exf5 O-O. 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.