Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Nc3/3...Nf6/4. Nxe5

Halloween gambit Four knights game C47 4. Nxe5?! · Halloween Gambit White eliminates Black's central pawn, but gives up their knight to do so. The Halloween gambit is an offbeat line where White sacrifices their knight so they can expand in the centre with tempo. The gambit is considered to be unsound and is uncommon in tournament chess, but it is tricky and aggressive and affords White lots of practical chances. 4...Nxe5, accepting the gambit, is almost always played and is the most critical line. Generally, Black can choose to either hold on to as much material as possible or return the material for a more straightforward game. After White plays 5. d4 with tempo, Black has the choice of where to retreat their knight: 5...Ng6 or 5...Nc6. Declining the gambit is unusual. Black's choices are 4...Nxe4?!, recovering the pawn but declining White's offered knight. This is worse for Black after 5. Qh5, threatening Qxf7#, but 5. Nxc6 is also playable. 4...Bc5?! declines the knight and fails to recover the pawn, but transposes to a Stafford gambit after 5. Nxc6 dxc6. History 4. Nxe5, also known as the Leipzig gambit, was described in the 1880s by Oskar Cordel as a favourite of the Leipzig chess club. Cordel said they knew it as the Müller-Schulze gambit, apparently not after any specific players but meaning an "everyman" opening (i.e. the Tom, Dick and Harry gambit).A BREEZE IN THE SLEEPY 4-KNIGHT'S GAME https://timkr.home.xs4all.nl/tour/breeze.htm Krabbe Tim 2000 2025-08-04 The gambit received the name "the Halloween attack" from Steffan Jakob, who revitalised it in the 1990s when he programmed a chess bot to develop an opening book around the line. Jakob likened the effect of the surprising gambit to the fright one experiences on seeing a Halloween mask.The Halloween-Attack in the Four Knights Game https://www.jakob.at/steffen/halloween/ Jakob Steffen 1996 Jakob had discovered the opening from the German-language magazine Randspringer; its author, Rainer Schlenker, had also described it in supernatural terms, saying the opening was "to wake up ghosts in the sleepy Four Knight's Game." Theory table 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Nxe5 4 5 6 7 8 9 10 11 ...Nxe5 d4Nc6 d5Bb4 dxc6Nxe4 Qd4Qe7 Be3Nxc3 Qxg7Nd5+ c3Rf8 =/=+ ..... ...Ng6 e5Ng8 Bc4d5 Bxd5c6 Bb3Bb4 O-OBxc3 bxc3N8e7 =+ ...Nxe4?! Qh5Qf6 Qxf7+Qxf7 Nxf7Kxf7 Bc4+Ke7 Nxe4Nd4 Bd3 += ...... ...... ...... ...Nxf2 Nxh8Nxh1 Nb5Nb4 Nxc7+Kd8 Nxa8Nxc2+ += References See also Müller-Schulze Gambit Critical lines in the Halloween gambit - Paul Keiser (Unorthodox Chess Openings newsletter)