Caissa Codex
A50

Mexican Defense: Horsefly Gambit 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 Mexican Defense: Horsefly Gambit

Play White's moves of the line from memory — 1. d4 Nf6 2. c4 Nc6 3. d5 Ne5 4. f4 — 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 Mexican Defense: Horsefly Gambit page, or pick another opening in the opening trainer.

https://chesscodex.org/train/mexican-defense-horsefly-gambit