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C1)
4....h6 5.e5 Nh7 (5....Ne5 6.Qxd4 Ng5 7.Bxg5! hxg5
8.Nc3 Nc6 9.Qd5! Qe7 10.Qe4! ± with the strong threat
of Nd5) 6.Nxd4?! (White probably does better to discourage
....d5 with 6.Qxd4! Nc6 7.Qe4 Ng5 8.Bxg5 hxg5 9.Nc3 ±
or to strive for rapid development with 6.O-O d5 7.exd6 Qxd6
8.Re1+ Be7 9.Qxd4 O-O 10.Bf4 +=) 6....d5! 7.Bb3 (7.Bd3
or 7.exd6 are also sensible) 7....Bc5 8.Nc3 c6 9.O-O Ng5
10.Be3 O-O? (10....Qe7 11.f4 Ne6 12.f5! Nxd4 13.Bxd4 +=;
10....Nd7 10.e6!? Nxe6 11.Nxe6 fxe6 12.Qh5+ with an attack)
11.Nxc6! bxc6 12.Bxc5 ± Brudnova--Predovic,
European Junior Championship at Rimavska Sobota 1992.
C2)
4....Be7 5.e5 Ne4 6.Qxd4
C2a)
6....Nc5 7.Nc3 (7.Qg4!? g6 8.Qf4! Ne6 9.Qe4 +=) 7....O-O
(7....Nc6 8.Qd5! Ne6 9.Be3 b6 10.0-0-0 Bb7 11.Qd2 Na5
12.Bd3 d5 13.exd6 Bxd6 14.Ne4 Be7 15.Qc3 0-0 16.h4 Qe8 17.Neg5
Bf6 18.Bxh7+ Kh8 19.Qb4 c5 20.Qg4 Qb5 21.b3 g6 22.Bxg6 fxg6
23.h5 Nxg5 24.hxg6+ Kg8 25.Nxg5 Qe8 26.Nf7 Bc8 27.Rh7!!
Bg7 28.Bh6! Rxf7 29.gxf7+ Qxf7 30.Rxg7+ Kh8 31.Rd8+ 1-0
Johnson--Moreau,
Portland, Maine 1989) 8.Be3 d6 (8....Nc6 9.Qf4
Ne6 10.Qg3 +=) 9.O-O-O Qe8?! 10.Nd5! Bd8 11.exd6 cxd6
12.Qf4 += Heller--Jacobse,
Landes-Einzelmeister 1990.
C2b)
6....Ng5 7.Nxg5!? (A better gain of time follows 7.Bxg5!
Bxg5 8.Nc3 Nc6 9.Qe4 Bh6!? 10.g4! ± or 9....Be7 10.O-O-O
O-O 11.h4 ±. White should not exchange so many pieces.)
7....Bxg5 8.Bxg5 (8.f4! Bh4+ 9.g3 Be7 10.Be3 +=)
8....Qxg5 9.O-O Nc6 10.Qe4 Qg6 (10....Qxe5? 11.Qxe5
Nxe5 12.Re1 and f4 +-; 10....O-O 11.f4 Qh5 12.Bd5!? or 12.Nc3
+=) 11.Qxg6 hxg6 12.Nc3 O-O (12....Kd8 13.f4 f6 14.Rfe1
+=) 13.Rfe1 += Nd4?! 14.Nd5! d6 (14....Nxc2 15.Re4!
Re8 16.Rc1 wins the Knight while 15....Nxa8? 16.Ne7+ Kh7
17.Rh4#) 15.Re4 Nf5 16.Nxc7 ± Rb8 17.g4 Nh4
18.exd6 b5 19.Bd5 Rb6 20.Rd1 Kh8 21.Bxf7 Nf3+ 22.Kg2 Bb7
23.Re8 Rxe8 24.Nxe8 Bc6 25.Nc7 Ne5+ 26.Bd5 Bd7 27.Be6 Bc6+
28.Kg3 Rb8 29.f4 1-0 Karpatchev--Grigoriov,
Capelle la Grande 1993.
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