Rybka4.1 TB6
Section A: 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+
<d=27> nothing here...
1. (0.02): 7.Nbd2 Bxd2+ 8.Bxd2 Nxe4 9.d5 Ne7 10.Bb4 d6 11.0-0 0-0 12.Re1 Nc5 13.Qd2 a6 14.a4 Re8 15.a5 Bf5 16.Qd4 Nd7 17.Bc3 f6 18.Nh4 Ne5 19.Bb3
2. (0.00): 7.Bd2 Nxe4 8.Bxb4 Nxb4 9.Bxf7+ Kxf7 10.Qb3+ d5 11.Qxb4 Re8 12.0-0 c6 13.Nc3 Qb6 14.Ne5+ Kg8 15.a3 Qxb4 16.axb4 Nd2 17.Rfe1 Bf5 18.Re2 Nb3 19.Rd1 a5 20.bxa5 h5 21.f3 Rf8 22.g3
3. (-0.29): 7.Nc3 Nxe4 8.0-0 Bxc3 9.Qc2(see Section C for 9.d5) d5 10.bxc3 0-0 11.Bd3 Re8 12.Re1 Bf5 13.Bf4 Bg6 14.Rac1 Rc8 15.Qb2 Qf6 16.Be3 Na5 17.Qb4 b6 18.Bb5 c6 19.Ba6 Rcd8 20.Ne5
4. (-0.37): 7.Kf1 d5 8.exd5 Nxd5 9.Qd3 0-0 10.a3 Be7 11.Nc3 Be6 12.h4 Qd7 13.Nxd5 Bxd5 14.Bxd5 Qxd5 15.Bf4 Bd6 16.Bxd6 cxd6 17.Rd1 Rfe8 18.Kg1 h6
Section B: 4.c3 Nf6 5.d3
+0.17/26 5...0-0 6.0-0 d6 7.h3 a5 8.Bg5 h6 9.Bh4 g5 10.Bg3 Nh5 11.Bh2 g4 12.hxg4 Bxg4 13.Nbd2 Qf6 14.a4 Nf4 15.Kh1
+0.17/26 5...d6 6.0-0 0-0 7.h3 a5 8.Bg5 h6 9.Bh4 g5 10.Bg3 Nh5 11.Bh2 g4 12.hxg4 Bxg4 13.Nbd2 Qf6 14.a4 Nf4 15.Kh1
+0.18/25 5...a5 6.0-0 d6 7.h3 0-0 8.Re1 h6 9.d4 Ba7 10.Be3 Re8 11.Nbd2 exd4 12.cxd4 d5 13.exd5 Nb4 14.Nb3
+0.19/25 5...a6 6.0-0 Ba7 7.a4 h6 8.b4 0-0 9.Re1 d6 10.Nbd2 Bd7 11.h3 b5 12.Bb3 Ne7 13.Qc2 Ng6 14.d4
+0.21/23 5...Bb6 6.b4 0-0 7.0-0 d6 8.Nbd2 Ne7 9.Bb3 c6 10.Qc2 Ng6 11.a4 Bc7 12.d4 Re8 13.Re1 d5 14.exd5 Nxd5 15.Bb2 Bd7
Section C: 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3 Nxe4 8.0-0 Bxc3 9.d5 Moller Attack
1. 9...Ne5
a) -0.12/27 10.Qe2 0-0 11.bxc3 Nxf3+ 12.Qxf3 Qh4 13.Bf4 Nd2 14.Bxd2 Qxc4 15.d6 cxd6 16.Rfe1 d5 17.Bf4 d6 18.Bxd6 Rd8 19.h3 Bxh3 20.Be7 Be6 21.Bxd8 Rxd8 22.a4 Rc8 23.Qe3 Qa6 24.Rab1 b6 25.Rb4
b) -0.25/26 10.bxc3 Nxc4 11.Qd4 f5 12.Qxc4 d6 13.Nd4 0-0 14.f3 Nc5 15.Ba3 b6 16.Bxc5 bxc5 17.Nc6 Qf6 18.Rae1 a5 19.Ne7+ Kh8 20.Nxc8 Raxc8 21.Re6 Qg5 22.f4 Qg4 23.h3 Qg3 24.Rf3 Qh4 25.Qb5
c) Komodo 9.3 65:75:-100 +0.00/44 9...Ne5 10.Qe2 0-0 11.bxc3 Nxc4 12.Qxc4 Nd6 13.Qf4 Re8 14.Ba3 Re4 15.Qd2 Nc4 16.Qd3 f5 17.Bc1 Ne5 18.Nxe5 Rxe5 19.Bg5 Qf8 20.Qc4 h6 21.Bf4 b5 22.Qxb5 c6 23.Qb3 Rxd5 24.Rfe1 Ba6 25.Rad1 Re8 26.Re3 Qf7 27.Rxd5 cxd5 28.Rxe8+ Qxe8 29.Qxd5+ Qe6 30.Qxe6+ dxe6 31.Be3 Bc4 32.Bxa7 Bxa2 33.f4 Bc4 34.Bd4 Kf7 35.Kf2 g5 36.Be5 Bd5 37.h3 Bc4
d) Komodo 9.3 65:75:-100 -0.10/43 9...Ne5 10.Qe2 0-0 11.bxc3 Nxc4 12.Qxe4 b5 13.a4 Ba6 14.Re1 Qf6 15.Nd4 bxa4 16.Rxa4 Nd6 17.Qf4 Rfe8 18.Rxe8+ Rxe8 19.h3 Bd3 20.Qxf6 gxf6 21.Bf4 a6 22.f3 Nb5 23.Nxb5 Bxb5 24.Rb4 c5 25.dxc6 Bxc6 26.Bc7 Re6 27.Rg4+ Kh8 28.c4 d5 29.c5 h5 30.Rh4 Re2 31.Rxh5+ Kg7 32.Rh4 Kg6 33.Rd4 Rc2 34.Bb6 f5 35.h4 f6
2 9...Bf6 -0.33/24 10.Re1 Ne7 11.Rxe4 d6 12.Bg5 Bxg5 13.Nxg5 0-0 14.Rc1* h6 15.Nf3 c6 16.dxc6 bxc6 17.Re1 Rb8 18.b3 Ng6 19.Bd3 c5 20.Be4 Bb7 21.Qd2 Bxe4
*14.Nxh7 leads to a draw with best play, according to the Wikipedia article, I have +0.00/24 14...Kxh7 15.Qh5+ Kg8 16.Rh4 f5 17.Qh7+ Kf7 18.Rh6 Rg8 19.Re1 Qf8 20.Bb5 Rh8 21.Qxh8 gxh6 22.Qh7+ Kf6 23.Rxe7 Qxe7 24.Qxh6+ Ke5 25.Qe3+ Kf6 26.Qh6+ Ke5 27.Qe3+ Kf6 28.Qh6+ Ke5 29.Qe3+ Kf6.
Black might play 13...h6 to avoid this line. Curious then is Komodo 9.3 -0.05/40 14.Qa4+ Bd7 15.Qb3 0-0 16.Rae1 Re8 17.Nf3 b6 18.Bb5 c5 19.dxc6 Nxc6 20.Rxe8+ Bxe8 21.h3 Rc8 22.Qd1 Ne5 23.Nxe5 dxe5 24.Qxd8 Rxd8 25.Rxe5 Bxb5 26.Rxb5 f6 27.Kf1 Rd1+ 28.Ke2 Rb1 29.a4 g5 30.a5 bxa5 31.Ke3 a4 32.Rb4 Kf7 33.Rxa4 Rxb2 34.Rxa7+ Kg6 35.Re7 h5 36.Rc7 h4 37.Ra7 Rb3+ 38.Ke4 Rb4+ 39.Ke3 Kf5
Section D: 4.d3
+0.12/31 4.d3 Nf6 5.0-0 d6 6.c3 a5 7.Bg5 h6 8.Bh4 g5 9.Bg3 0-0 10.Nd2 Kh7
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