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1e4 e5 2 f4 exf4
(Click on Column Number to see variation
in Play)
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3
Bc4......(Bishops Gambit).....................Nc3.........................d4.............................Be2.....................Qf3
d5................................Nf6(c)
Qh4(h)
d5
d5
Nc6(q)
4
Bxd5
Nc3
Ke2
exd5
exd5
c3
Nf6
c6(d)
d5!((i)
Qh4+
Nf6
Nf6
5
Nc3
Bb3(e)
Nxd5
Ke2(m)
Nf3(n)
d4
Bb4(a)
d5
Bg4+
Bd6
Be7
d5
6
Nf3(b)
exd5
Nf3
Nf3
0-0
e5
Bxc3
cxd5
Bd6(j)
Bg4
0-0
Ne4
7
dxc3
d4
d4
c4
c4(o)
Bxf4
c6
Bd6
Nc6(k)
c5
Ne8(p)
Be7(r)
8 Bc4
Nge2
e5
Nc3
d4
Nd2
Qxd1+
0-0
0-0-0
Nf6
g5
f5
9 Kxd1
Bxf4(f)
Bxf4
dxc5
Bd3
exf6
0-0
Bxf4
Nge7
Bxc5
Ng7
Nxf6
10 Bxf4
Nxf4
c4
Kd2 oo
Qc2
Bd3
Nxe4=
Re8+ (g)
Bb4(l)
f5 +-
0-0 =+
(a) Other tried do not seem as good: (A)5.....Nxd5 6 Nxd5 Qh4+ 7 Kfi += ; (B)5.....c6 6 Bb3 Bg4 7 Nf3 +=.
(b) Both (A) 6 Nge3 Bxc3 7 bxc3 Nxd5 and (B)6 Qf3 0-0 7 Nge2 Re8, lead to complete equality. The column is an old analysis by Bilguer.
(c) (A)3.....Qh4+ is playable, but after 4 Kf1 White will later gain time in developement by attacking Black's Queen with Nf3. (B)3.....d6 4 Nc3 Be6 5 Bxe6 fxe6 6 d4 Qh4+ 7 Kf1 Nh6 8 Nf3 Qf6 is roughly equal, Hjartarson-Beliavsky, Reykjavik, 1988.
(d) 4.....Bb4 is all right after 5 e5 d5 6 Bb5+ c6 7 exf6 cxb5 8 fxg7 Rg8 = (Castro-Karov, Stockholm 1969), but 5 Nf3 Nc6 7 Nd5 makes it unreliable.
(e)
5 d4 Bb4 6 Qf3 d5 7 exd5 0-0 8 Nge2 cxd5 9 Bd3 Bg4 =+, Spielmann-Bogolyubov,
Carlsbad 1923.
Suprisingly, this line was repeated
62 years later in Hartmann-Spassky, West Germany 1985.
(f) Equality results from 9 0-0 g5 10 Nxd5 Nc6 11 h4 h6.
(g) 11 Nfe2 Ng4 12 Nd5 Be6 13 h3 was suggested by Fischer as good for White, but Kere's 13.....Nh6 or 12.....Nc6 (instead of 12.....Be6) should produce counterplay.
(h) Black may play 3.....Nc6 with an acceptable position, yet there is no reason to avoid giving the queen check.
(i) The text move is the sharpest plan. Less incisive is 4.....d6 5 Nf3 Bg4 6 Nd5 Bxf3+ 7 gxf3 Kd8 8 d3 +=.
(j) The text move is probably strongest, but possible is 6.....Nc6 7 Nxc7+ Kd8 8 Nxa8 Ne5 (8.....Nd4+ 9 Kd3 Qf6 oo, Jago - J.E. Littlewood, England 1965) 9 h3 Bxf3+ 10 gxf3 Qg3 11 d4 when Black can give perpetual check.
(k) Adequate alternatives are 7.....Ne7 and 7.....Nf6.
(l) This position was reached in Spassky-Furman, USSR 1959, where Black played 10.....Nf5? and was much worse. Instead, 10.....Bb4 assures him of a big advantage.
(m) The other reasonable way to escape from check is 5 Kd2. If then 5.....Bd6 6 Qe1+ is about equal (Keres). The column is Mason-Kurchner, Nurnberg 1882.
(n) Better than 5 c4 c6 6 d4 Bb2+ 7 Kf1 (else 7.....Ne4) cxd5 =+, Tartakower-Capablanca, New York 1924.
(o) 7 Bc3 Nxd5 8 Nxd5 Qxd5 9 d4 g5 oo. Korchnoi evaluated this position as better for Black, then changed his mind to perfer the White side. The text move is better than 7 Nc3.
(p) The text looks odd, but the tries 7.....b5 (Nei) and 7.....c6 (Estrin) have both failed to shake White's advantage. The column is Biawx-Buy, corr. 1984.
(q) A good alternative is 3.....d5. After 4 exd5 Nf6 5 Bb5+ c6 6 dxc6 Nxc6 7 d4 Bg4 Black stands at least equal, Spielmann-Nimzowitsch, Carlsbad 1907.
(r)
7.....f6 8 exf6 Nxf6 9 Bd3 =. The column is Drimer-Unzicker, Hastings 1969.