Evans Gambit
Initial Moves: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4
Strategic Summary & Main Idea
The Evans Gambit offers the b-pawn in the Italian: 4.b4 lures the c5 bishop and prepares c3 and d4 with tempo, building the centre the Giuoco Piano usually takes a long time to achieve. The measurement shows a gambit that neither wins nor loses: after 4.b4 the position measures −0.07, and the accepted main line, with 5...Ba5 and 7.O-O, −0.16. The Lasker Defence, which returns the pawn and trades queens, measures −0.20. What the entry records are Black's mistakes: 7...Nge7 in the main line reaches +6.79, and accepting the second pawn with 7...dxc3 ends at +4.79.
The pawn structure this opening produces
The Evans trades a flank pawn for a centre. After 4...Bxb4 5.c3, Black's bishop is attacked with tempo and the c3 pawn prepares d4, and after 6.d4 White has the e4 and d4 pawns side by side, with the c4 bishop aiming at f7 and castling ready. Black has an extra queenside pawn, but no central pawn besides e5, which is under attack. The structure is decided by how Black handles that centre. If Black takes on d4 with ...exd4, the e-file opens and White gains initiative against the king still on e8. If Black holds the pawn with ...d6, the centre stays tense and the bishop retreats to b6. If Black returns the pawn, as in the Lasker Defence, the queens come off and the game becomes a balanced endgame in which Black's extra pawn is worth little. In every version, f7 is Black's weak point, and Black's king in the centre is what gives the pawn sacrifice its meaning — when Black castles in time, the gambit loses its argument.
Typical Plans for White
- After 4...Bxb4, play 5.c3 and 6.d4 and build the centre with tempo on the bishop
- Castle early and open the e-file against Black's king when Black takes on d4
- Against 7...Nge7, attack f7 with Ng5 and the sacrifice on f7: the line measures +6.79
- Against 7...dxc3, play Qb3 and develop with Nxc3 aiming at d5
- Accept the Lasker Defence queen trade without expecting an edge: it measures −0.20
Typical Plans for Black
- Accept with 4...Bxb4 and retreat the bishop to a5, which keeps a potential pin on c3
- Castle before returning the pawn, because the king in the centre is White's only real target
- Return the pawn with ...d6 and ...Bb6 in the Lasker Defence and trade queens
- Against 6.O-O, play 6...d6 and pin the knight with ...Bg4: the line measures −0.43
- Never develop the g8 knight to e7 with the e-file open: Ng5 and Nxf7 decide
Main Variations of the Evans Gambit
| Variation | Move Sequence | Evaluation | Style / Characteristic |
|---|---|---|---|
| Accepted with 5...Ba5 and 7.O-O | 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 exd4 7.O-O |
−0.16 | The main line: open centre and Black's king still on e8 |
| 5...Ba5 6.d4 d6 7.Qb3 | 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 d6 7.Qb3 Qd7 |
−0.04 | Black holds e5 and White's queen hits f7 and b7 |
| Lasker Defence | 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 d6 7.O-O Bb6 8.dxe5 dxe5 9.Qxd8+ Nxd8 10.Nxe5 |
−0.20 | The pawn returned and queens traded; the gambit becomes an endgame |
| 5...Be7 | 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Be7 6.d4 Na5 7.Be2 exd4 8.Qxd4 |
−0.10 | The bishop retreats to defend, and the knight drives the c4 bishop back to e2 |
| 5...Bc5 | 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Bc5 6.d4 exd4 7.O-O d6 8.cxd4 Bb6 |
+0.30 | The bishop returns to c5 and is attacked again; it costs Black the time gained |
| 6.O-O d6 7.d4 Bg4 | 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.O-O d6 7.d4 Bg4 |
−0.43 | The pin on the f3 knight before d5; Black's best line in the entry |
| 7.Qb3 against 6...exd4 | 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 exd4 7.Qb3 Qe7 8.O-O Bb6 9.cxd4 Nxd4 10.Nxd4 Bxd4 11.Nc3 |
+0.17 | The queen hits f7 before castling, and White regains one of the pawns |
| 4...Nxb4 | 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Nxb4 5.c3 Nc6 6.d4 exd4 7.cxd4 Bb4+ 8.Bd2 Bxd2+ 9.Nbxd2 |
−0.20 | The knight takes the pawn instead of the bishop and returns to c6 |
| Evans Declined (4...Bb6) | 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bb6 5.a4 a5 6.b5 Nd4 |
+0.71 | Declining costs more than accepting; the highest White evaluation in the entry |
Evaluations measured by us with Stockfish 19, depth 22, on 15/09/2026.
Frequently asked questions
Is the Evans Gambit sound?
It is playable and does not lose: the position after 4.b4 measures −0.07, and the accepted main line −0.16. White does not regain the first-move edge, but gets a centre and an initiative that demand precision from Black. Black's mistakes in the main line measure between +4.79 and +6.79.
What is the best defence to the Evans Gambit?
By the measurement, accepting with 4...Bxb4 5.c3 Ba5 and, against 6.O-O, playing 6...d6 7.d4 Bg4, which measures −0.43. The Lasker Defence, which returns the pawn and trades queens, measures −0.20 and is the safest option for anyone who does not want to defend a king in the centre.
Is it worth declining the Evans?
No. The Evans Declined with 4...Bb6 5.a4 a5 6.b5 Nd4 measures +0.71, the highest White evaluation in this entry. Declining leaves White with queenside space without having paid the pawn; accepting gives Black material and positions in which Black is slightly better.
Common Mistakes & Where Most Amateurs Go Wrong
- 01 Developing with 7...Nge7? in the main line. The knight removes the defence of f7: 8.Ng5 d5 9.exd5 Nxd5 10.Nxf7 Kxf7 11.Qf3+ and Black's king is exposed in the middle of the board, +6.79. The line:
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 exd4 7.O-O Nge7 8.Ng5 d5 9.exd5 Nxd5 10.Nxf7 Kxf7 11.Qf3++6.79 - 02 Taking the second pawn with 7...dxc3? and developing with 9...Nf6? after 8.Qb3 Qe7 9.Nxc3. The knight on d5 hits the queen and c7 with tempo, and 10.Nd5 leaves Black without a defence: +4.79. The line:
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 exd4 7.O-O dxc3 8.Qb3 Qe7 9.Nxc3 Nf6 10.Nd5+4.79
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