Caissa Codex
C37

King's Gambit Accepted: Rosentreter Gambit, Testa Variation trainer

Back to the opening, all openings to practise or my repertoire

Type a move and press Enter: e4, Nf3, O-O, or from and to squares like g1f3 (e7e8q to promote). The board is also played with the mouse.

Practise the King's Gambit Accepted: Rosentreter Gambit, Testa Variation

Play White's moves of the line from memory — 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. d4 g4 5. Bxf4 — and the trainer plays Black's replies; "Play the other side" turns it around.

Read about the line, its statistics on Lichess and Stockfish's evaluation on the King's Gambit Accepted: Rosentreter Gambit, Testa Variation page, or pick another opening in the opening trainer.

https://chesscodex.org/train/kings-gambit-accepted-rosentreter-gambit-testa-variation