Duras Gambit

The Duras Gambit arises after 1. e4 f5, where Black meets the king's pawn by attacking it with the f-pawn. The idea is to challenge e4 at once and gain development if White takes. The cost is high, because the move opens the e8-h5 diagonal before Black has developed any pieces to cover it. The engine gives White a clear advantage. On Lichess the results are much closer, with White winning only slightly more often than Black.

Accepting with 2. exf5 is the most common reply and is regarded as the critical test. Black cannot regain the pawn directly and must first play 2...Nf6 to stop Qh5+, even though this offers no real compensation. Hasty attempts to recover the material are punished. After 2...d5, aiming for ...Bxf5, White plays 3. Qh5+ g6 4. fxg6 Bg7 5. gxh7+ Kf8 6. hxg8=Q+ and wins heavily. The deliberately absurd 2...Kf7, nicknamed the Fred Defense, also loses quickly after 3. Qh5+ g6 4. fxg6+ Kg7 5. gxh7 Rxh7 6. Qg5+ Kh8.

Several second moves turn the game into gambits normally reached from other openings. 2. d4 leaves the e-pawn hanging and transposes to the Staunton Gambit of the Dutch Defense. 2. f4 reaches the Wagner-Zwitersch Gambit of the Bird Opening, and 2. Nf3 reaches the Lisitsyn Gambit of the Zukertort Opening. The rare 2. c4 leads to the Hickmann Gambit of the Anglo-Dutch Defense. 2. e5 and 2. Nc3 are frequent ways of declining the pawn: the first gains space, and the second defends e4.

2. Qh5+ is a less recommended check that contains a trap. After 2...g6 3. Be2, taking the queen with 3...gxh5 allows 4. Bxh5#. The correct 3...Nf6 drives the queen away, and Black then wins the e-pawn and stands better.

The gambit is named after Oldřich Duras (1882–1957), a Czech master who became better known as a composer of chess problems. It is a surprise weapon whose practical chances depend mainly on White mishandling the early tactics on the weakened kingside diagonal.