About this opening
Grünfeld Defense: Russian Variation, Byrne Variation is an opening in the Encyclopedia of Chess Openings,
classified under code D97. ECO group D (D00–D99)
covers closed games and semi-closed games beginning 1.d4 d5, covering the Queen's Gambit, Slav, Grünfeld and related queen-pawn structures. This particular variation is reached
after 14 half-moves from the
starting position, with the move sequence 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Nc6.
It belongs to the Grünfeld Defense family.
Within that family this is a level-2 branch (the Russian Variation → Byrne Variation line). The immediate parent line is Grünfeld Defense: Russian Variation, transitioned via 7…Nc6.
The opening sequence in prose form: 1.d4 Nf6, 2.c4 g6, 3.Nc3 d5, 4.Nf3 Bg7, 5.Qb3 dxc4, 6.Qxc4 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.
Use the interactive board above to walk through the moves position-by-position. Click any move in the navigation to step backwards, or use the keyboard arrow keys. For statistical data — how often master-level players have reached this position, White's win-rate, draw frequency, Black's score — see the panel in the right column.
Caissly's coverage of D97 extends through every named sub-variation in this line and across all four locales (English, Spanish, Portuguese, Russian). Where editorial commentary exists for a specific variation it appears as the page body; otherwise the page presents the structural data, board, and statistics as shown here.