King's Gambit Accepted: Bishop's Gambit & Muzio (C33)

ECO C33 · Vol.05 · Ch.2 · 1. e4 e5 2. f4 exf4 3. Bc4

EPD: rnbqkbnr/pppp1ppp/8/8/2B1Pp2/8/PPPP2PP/RNBQK1NR b KQkq - · Eval +0.10

Forever enshrined by Adolf Anderssen's 1851 'Immortal Game' against Lionel Kieseritzky and revived in modern tournament play by Judit Polgár, Nigel Short, and Richard Rapport, the Bishop's Gambit (C33: 1. e4 e5 2. f4 exf4 3. Bc4) is pure controlled audacity. Instead of guarding h4, White aims the light-squared bishop straight at f7 and welcomes 3...Qh4+ 4. Kf1—sacrificing castling rights so Nf3 will later chase Black's exposed queen with decisive tempo, while sibling Muzio lines (C37) sacrifice an entire knight on f3 for a triple battery down the f-file.

Don't flinch at 3...Qh4+ 4. Kf1! Otto reminds you that Black's queen becomes a prime target for Nf3 while your c4 light-squared bishop lasers f7.

Historical Origins & Pawn-Structure DNA

19th-Century Romantic Era & Viennese Coffeehouse Masters (Hamppe, Anderssen) · Open f-File Kingside Storm & Delayed f4 Spearhead · Adolf Anderssen, Paul Morphy, Boris Spassky, Hikaru Nakamura

Immortalized in Anderssen's 1851 'Immortal Game' and championed well into the modern era by World Champion Boris Spassky, the King's Gambit and Carl Hamppe's Vienna Game laid the tactical foundations of sacrifice, tempo, and open-file domination.

By challenging e5 from the flank with f4, White trades temporary king exposure along the a7–g1 diagonal for an open f-file rook lift after O-O and an imposing e4–d4 central pawn duo—while Black's sharpest antidote is a timely ...d5 counter-thrust.

White's Strategic Blueprint

Answer 3...Qh4+ calmly with 4. Kf1!, then follow with Nc3, d4, and Nf3 to gain a crucial development tempo kicking Black's queen off h4.
In Muzio transpositions (3. Nf3 g5 4. Bc4 g4 5. O-O! gxf3 6. Qxf3), stack Qxf3, Rf1, and Bc4 directly against f7 before Black's queenside wakes up.
Against solid central setups like 3...Nf6 4. Nc3 c6, retreat Bb3 or play Qf3 to maintain pressure on f4 while preparing d4 and Nge2.

Black's Counterplay & Breaks

Play Bogoljubow's 3...Nf6 4. Nc3 c6! (or immediate 3...c6), preparing a timed ...d5 strike that shuts down White's c4 light-squared bishop.
Counterattack immediately in the center with 3...d5! 4. Bxd5 Nf6, trading off White's dangerous attacking bishop to equalize effortlessly.
If entering the Muzio Accepted (...gxf3 6. Qxf3), play Sarratt's exact 6...Qf6! followed by ...Nc6 and ...Bh6 to shield f7 and trade queens.

Common Club Traps & Mistakes

Responding to 3...Qh4+ with 4. g3?? walks straight into 4...fxg3 5. Nf3?? g2+! 6. Nxh4 gxh1=Q+, losing a whole rook on move six!
In the Muzio Gambit (5. O-O gxf3 6. Qxf3), playing greedy 6...Qe7?! or 6...Bh6?! without guarding f4 allows 7. d4! and Bxf4 with a crushing attack on f7.

Canonical ECO Sub-Variations

C33 King's Gambit Accepted: Bishop's Gambit: 1. e4 e5 2. f4 exf4 3. Bc4 (rnbqkbnr/pppp1ppp/8/8/2B1Pp2/8/PPPP2PP/RNBQK1NR b KQkq -)
C37 King's Gambit Accepted: Muzio Gambit, Wild Muzio Gambit: 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 g4 5. O-O (rnbqkbnr/pppp1p1p/8/8/2B1Ppp1/5N2/PPPP2PP/RNBQ1RK1 b kq -)
C37 King's Gambit Accepted: Salvio Gambit: 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 g4 5. Ne5 (rnbqkbnr/pppp1p1p/8/4N3/2B1Ppp1/8/PPPP2PP/RNBQK2R b KQkq -)
C37 King's Gambit Accepted: Muzio Gambit, Sarratt Defense: 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 g4 5. O-O gxf3 6. Qxf3 Qf6 (rnb1kbnr/pppp1p1p/5q2/8/2B1Pp2/5Q2/PPPP2PP/RNB2RK1 w kq -)
C37 King's Gambit Accepted: Lolli Gambit: 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 g4 5. Bxf7+ (rnbqkbnr/pppp1B1p/8/8/4Ppp1/5N2/PPPP2PP/RNBQK2R b KQkq -)
C37 King's Gambit Accepted: Quaade Gambit: 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Nc3 (rnbqkbnr/pppp1p1p/8/6p1/4Pp2/2N2N2/PPPP2PP/R1BQKB1R b KQkq -)

FAQ

Isn't losing castling rights after 3...Qh4+ 4. Kf1 terrible for White?

Surprisingly no—on f1 the king is well-shielded behind pawns, White's h1-rook stays ready once g3 and Kg2 are played, and Nf3 forces Black's queen to waste precious move-tempos retreating.

Is the Muzio Gambit knight sacrifice (5. O-O gxf3 6. Qxf3) actually sound?

Against human defenders over the board it is terrifyingly dangerous, and even top engines evaluate the sharpest 6...Qf6 7. e5 Qxe5 8. d3 lines as dynamically balanced around 0.00!

How should Black neutralize 3. Bc4 without memorizing wild sacrifices?

Playing 3...Nf6 4. Nc3 c6! (preparing 5...d5) or immediate 3...d5 4. Bxd5 Nf6 blunts the a2–g8 diagonal and reaches a clean, level middlegame.

Grandmasters Who Weaponized This Technique

Garry Kasparov (RUS · 2851 FIDE) — 13th World Champion · Master of Dynamic Initiative & Deep Prep
Bobby Fischer (USA · 2785 FIDE) — 11th World Champion · Crystal-Clear Classical Precision
José Raúl Capablanca (CUB · 8 yrs Unbeaten) — 3rd World Champion · The Human Chess Machine (8 Years Unbeaten)

C34 · King's Gambit Accepted: King's Knight's Gambit (C34) · C31 · Falkbeer Countergambit & King's Gambit Declined (C31) · C29 · Vienna Gambit: Falkbeer Defense Mainline (C29) · Bishop & Knight Checkmate (W-Maneuver)