The Marshall Gambit turns the Semi-Slav triangle into an immediate pawn sacrifice. Learn how White uses the d-file, dark-squared bishop, and exposed black queen for activity, then switch sides to practice Black's consolidating routes, central breaks, and counterattack against the adventurous bishop.
Study four White routes and four Black responses. The lines cover the Be2-Ba5 d-file attack, the Ne2-Bf8 deflection, the 6.Nc3 Forgotten Variation, the early ...Qh4 queen hunt, Black's ...Na6 and ...f6 defense, the restrained ...Nd7 setup, the h8-bishop counterattack, and the ...Ne7-...c5 queen trade. Individual move cards intentionally retain the neutral placeholder in this build; Opus will add Marshall-specific explanations later.
Keyboard: ← → step through the moves. Click any move chip to jump.
Source position: the Marshall Gambit guide supplies the lines, positions, and evaluations. All five source tests appear here with their published answers: Nxf6+ (+0.64), ...Bb4+ (-0.66), a3 against ...Nf6 (+0.32), a3 against ...c5 (+0.27), and Be2 against ...Qg4 (+4.61).
The 18 boards cover Ba5 and Qd6, the Ne2-Bf8 trap, both a3 guide positions, natural Forgotten-Variation development, the ...Qh4 queen hunt, Black's critical check, ...Na6 and ...Nd7 defenses, the ...c5 break, the h8-bishop trap, and the queenless central structure. Every legal alternative names the opponent's immediate reply.
Keyboard: Enter next drill · H hint · R reset the position.
Launch any of six verified Marshall starts against the 600 to 2500 bot range. Ten exact-position coach triggers explain the pawn offer, critical check, Be2 and Ne2 choices, attacked bishop, Bf8 deflection, h8 trap, restrained defense, doubled c-pawns, and exposed-queen hunt.
The six starts include the fourteen-move Marshall base, all three seeded book branches: Be2, Ne2, and the Forgotten Variation, plus the ...Qh4 queen-hunt and Bxh8 counterattack set pieces. Each color receives a mirrored, board-checkable target.
Three directions, each with a reason. Everything below links to a page that exists today.
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