About this opening
Grob Opening: Grob Gambit, Fritz Gambit, Romford Countergambit is an opening in the Encyclopedia of Chess Openings,
classified under code A00. ECO group A (A00–A99)
covers flank and irregular openings, including the English, Bird, Réti and Dutch defences. This particular variation is reached
after 10 half-moves from the
starting position, with the move sequence 1. g4 d5 2. Bg2 Bxg4 3. c4 d4 4. Bxb7 Nd7 5. Bxa8 Qxa8.
It belongs to the Grob Opening family.
Within that family this is a level-3 branch (the Grob Gambit → Fritz Gambit → Romford Countergambit line). The immediate parent line is Grob Opening: Grob Gambit, Fritz Gambit, transitioned via 5…Qxa8.
The opening sequence in prose form: 1.g4 d5, 2.Bg2 Bxg4, 3.c4 d4, 4.Bxb7 Nd7, 5.Bxa8 Qxa8. 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 A00 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.