King's Gambit Accepted: Rosentreter Gambit, Testa Variation
1. e4 e5 2. f4 exf4 3. Nf3 g5 4. d4 g4 5. Bxf4
The King's Gambit Accepted: Rosentreter Gambit, Testa Variation is a chess opening classified as ECO C37, reached after 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. d4 g4 5. Bxf4. It is a line of the King's Gambit Accepted. Black is to move.
In 12.6 million rated Lichess games (blitz and slower), this position was reached 109 times by this move order. White won 50%, 3% were drawn and Black won 47%. The most popular continuation is 5… gxf3 (100% of games).
Engine evaluation: −1.36 (Stockfish, depth 29; best line 5… gxf3 6. Qxf3 Nc6 7. Bc4 Qf6 8. e5)
- ECO
- C37
- Moves
- 9 plies
- FEN
rnbqkbnr/pppp1p1p/8/8/3PPBp1/5N2/PPP3PP/RN1QKB1R b KQkq - 0 5- PGN
1. e4 e5 2. f4 exf4 3. Nf3 g5 4. d4 g4 5. Bxf4
Analyse with Stockfish · Board image (SVG) · Open on Lichess
Results by rating
| Average rating | Games | White / draw / Black |
|---|---|---|
| 0-1499 | 13 | |
| 1500-1999 | 81 | |
| 2000+ | 15 | |
| All | 109 |
Most played moves
| Move | Games | White / draw / Black |
|---|---|---|
| 5… gxf3 | 109 (100%) |
Master games
3 over-the-board games are classified under this line (White 33%, draw 34%, Black 33%). The strongest:
- IM Leon Livaic (2576) – FM Oleksii Bilych (2387) 1/2-1/2 · Titled Tue 9th Aug Late · 2022-08-09
- FM Lukas Schulz (2347) – Sebastian Reimann (2277) 0-1 · 94th ch-Bavaria 2023 · 2023-08-26
- IM David Pruess (2336) – CM Ervin Ozkan (2147) 1-0 · Titled Tuesday 30th Mar · 2021-03-30
Highest-rated Lichess games
- rumpelstiltsskin (1972) – BlackPanther2800 (2355) 0-1 · 2026-09-06 · 1500 + 0s
- shuhrat51 (2141) – morrigan73 (2148) 0-1 · 2026-09-01 · 180 + 0s
- pawnmonster (2175) – ONLINE_COACH (2110) 1-0 · 2026-09-01 · 600 + 0s
Comes from
King's Gambit Accepted: Rosentreter Gambit 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. d4
More King's Gambit Accepted lines (all)
- King's Gambit Accepted C33
- King's Gambit Accepted: Basman Gambit C33
- King's Gambit Accepted: Bishop's Gambit C33
- King's Gambit Accepted: Bishop's Gambit, Anderssen Defense C33
- King's Gambit Accepted: Bishop's Gambit, Anderssen Variation C33
- King's Gambit Accepted: Bishop's Gambit, Bledow Countergambit C33
- King's Gambit Accepted: Bishop's Gambit, Bledow Variation C33
- King's Gambit Accepted: Bishop's Gambit, Boden Variation C33
- King's Gambit Accepted: Bishop's Gambit, Bogoljubow Defense C33
- King's Gambit Accepted: Bishop's Gambit, Bogoljubow Variation C33
- King's Gambit Accepted: Bishop's Gambit, Boren-Svenonius Variation C33
- King's Gambit Accepted: Bishop's Gambit, Bryan Countergambit C33
Opening names and moves from the Lichess openings dataset; statistics from the Lichess open database, 2026-09 (CC0), sample of 12.6 million games, bots excluded; evaluations from Lichess cloud analysis (all CC0). Master games from The Week in Chess #920–#1664 by Mark Crowther, used with permission.