About this opening
King's Gambit Accepted: Bishop's Gambit, Boren-Svenonius Variation is an opening in the Encyclopedia of Chess Openings,
classified under code C33. ECO group C (C00–C99)
covers open games (1.e4 e5) and the French Defence, including the Ruy Lopez, Italian, Scotch and King's Gambit. This particular variation is reached
after 10 half-moves from the
starting position, with the move sequence 1. e4 e5 2. f4 exf4 3. Bc4 d5 4. Bxd5 Qh4+ 5. Kf1 Bd6.
It belongs to the King's Gambit Accepted family.
Within that family this is a level-2 branch (the Bishop's Gambit → Boren-Svenonius Variation line). The immediate parent line is King's Gambit Accepted: Bishop's Gambit, transitioned via 5…Bd6.
The opening sequence in prose form: 1.e4 e5, 2.f4 exf4, 3.Bc4 d5, 4.Bxd5 Qh4+, 5.Kf1 Bd6. 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 C33 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.