Humans:
1) 4.Bf4
2) 4.exd6
3) 4.e4
4) 4.Bg5
5) 4.Nbd2
Stockfish:
1) 4.h3
2) 4.Qd4
3) 4.Nc3
4) 4.Bg5
5) 4.c3
Sample game:
[Event ""]
[Site ""]
[Date "????.??.??"]
[Round ""]
[White ""]
[Black ""]
[Result "*"]
1.d4 e5 2.dxe5 d6 3.Nf3 $201
{ Move out of book}
3...Bg4 $6 $16 $201
{ Stockfish 10 64: 20:+1.59}
( 3...Nc6 {23:+1.01} 4.Bg5 Be7 5.Bxe7 Ngxe7 6.exd6 cxd6 7.e3 Qb6 8.b3
Bf5 9.Be2 O-O 10.O-O d5 11.c3 h6 12.Nbd2 a6 13.b4 Qc7 14.Rc1 Rfe8 15.
h3 Bg6 16.Qb3 Qb6 $14 )
4.Bf4 $6 $14
{ Stockfish 10 64: 23:+0.76}
( 4.Nc3 {20:+1.59} 4...Nc6 5.Bg5 Qd7 6.exd6 Bxd6 7.Nb5 h6 8.Nxd6+ cxd6
9.Bf4 Rd8 10.e3 Nf6 11.h3 Bh5 12.Be2 O-O 13.O-O Rfe8 14.c3 Ne5 15.Nd4
Bxe2 16.Qxe2 Nc6 $16 )
4...Nc6 $201 5.exd6 $14
{ Stockfish 10 64: 24:+0.94}
( 5.Nbd2 $14 {22:+1.35} )
5...Qf6 $201 6.e3 $14
{ Stockfish 10 64: 23:+0.75}
( 6.d7+ {23:+1.10} 6...Bxd7 7.Qc1 Bd6 8.Bxd6 Qxd6 9.e3 O-O-O 10.Nbd2
f5 11.Be2 Nf6 12.O-O Ne4 13.c3 Kb8 14.b4 a6 15.Qb2 Qf6 16.Nd4 Nxd2 17.
Qxd2 Qg6 $14 )
6...Bxd6 7.Bxd6 O-O-O 8.Nc3 $201 Rxd6 $14
{ Stockfish 10 64: 23:+1.31}
( 8...Nge7 {24:+0.97} 9.h3 $14 )
9.Bd3 Qh6 $201 10.Qe2 $14 $201
{ Stockfish 10 64: 24:+0.81}
( 10.Ne4 {22:+1.28} 10...Rd8 11.h3 Ne5 12.Ng3 Nxf3+ 13.gxf3 Be6 14.Qd2
Ne7 15.O-O-O Kb8 16.Kb1 Bd5 17.Qe2 Qe6 18.c4 Bc6 19.h4 h6 20.Bc2 Qf6
21.Ne4 Rxd1+ 22.Qxd1 Bxe4 23.Bxe4 $14 )
10...Nf6 $14 $201
{ Stockfish 10 64: 22:+1.13}
( 10...Nge7 $14 {24:+0.81} )
11.O-O-O $6 $10
{ Stockfish 10 64: 24:+0.15}
( 11.Nb5 $14 {22:+1.13} )
11...Nd4 $201 12.Qf1 $6 $10
{ Stockfish 10 64: 27:-0.48}
( 12.Qd2 {27:+0.50} 12...Bxf3 $14 )
12...Nxf3 13.gxf3 Bxf3 14.Bf5+ Kb8 15.Rxd6 Bxh1 $201 16.Rd4 $6 $15
{ Stockfish 10 64: 25:-1.02}
( 16.Rd2 {28:+0.00} 16...Qxh2 17.Qd1 a6 18.f4 Qh5 19.Qxh5 Nxh5 20.Rh2
Bf3 21.Rh3 g6 22.Bxg6 hxg6 23.Rxf3 Nf6 24.e4 Rh4 25.e5 Nd7 26.Kd2 b5
27.Ke3 g5 28.Ne4 gxf4+ 29.Rxf4 Rh5 30.Kd4 Nxe5 31.Rf6 Kb7 32.Nc5+ Kc8
33.Nxa6 Kd7 34.b3 Ke7 35.Rf1 Kd6 36.Rf6+ $10 )
16...Qxh2 17.f4 a6 $201 18.Qd1 $6 $15 $201
{ Stockfish 10 64: 25:-1.26}
( 18.b3 {25:-0.46} 18...Qg3 19.Qd3 Ka7 20.Kb2 Re8 21.Qc4 Qxe3 22.Qc5+
b6 23.Qxc7+ Bb7 24.Ra4 Qc5 25.Qxc5 bxc5 26.Nb5+ Kb6 27.Nd6 Re1 28.Bd3
h5 29.f5 Re7 30.Nxb7 Kxb7 31.Bxa6+ Kb6 32.Bd3 Kc7 33.Rh4 Kd6 34.a3 Re8
35.Rh1 $10 )
18...Qh4 $6 $10
{ Stockfish 10 64: 24:-0.12}
( 18...Qh5 $15 {25:-1.26} )
19.b4 Nh5 $201 20.b5 $6 $17
{ Stockfish 10 64: 23:-1.52}
( 20.Bxh7 {24:-0.10} 20...Qe7 21.Kb2 Nf6 22.Qxh1 Qxe3 23.Rd3 Qxf4 24.
a3 Nxh7 25.Rf3 Qh6 26.Rh3 Qg6 27.Ne4 b6 28.Nc3 Ka7 29.Qh2 Kb7 30.Qf4
f5 31.Nd5 Qf7 32.Ne3 g5 33.Qxf5 Qxf5 34.Nxf5 $10 )
20...Ng3 $201 21.Bd3 $17
{ Stockfish 10 64: 25:-1.99}
( 21.Bd7 {23:-1.59} 21...Rd8 22.Qe1 Bf3 23.Kb2 Nf5 24.Qxh4 Nxh4 25.
bxa6 bxa6 26.e4 Ka7 27.Rd3 h5 28.a3 Bg4 29.Bxg4 Rxd3 30.cxd3 hxg4 31.
Ne2 Nf3 32.Kc2 Kb6 33.Kc3 Kb5 34.Kc2 Kc6 $17 )
21...axb5 22.Bxb5 h5 $201 23.Rd7 $6 $17
{ Stockfish 10 64: 27:-2.98}
( 23.Qd3 {24:-2.40} 23...Qf6 $17 )
23...Qf6 $201 24.Qd4 $6 $19
{ Stockfish 10 64: 26:-4.27}
( 24.Qd3 {28:-2.95} 24...h4 25.Qc4 Qb6 26.Qxf7 Qxe3+ 27.Kb2 Qc5 28.
Qxg7 Qb4+ 29.Kc1 Re8 30.Qd4 Qxd4 31.Rxd4 c6 32.f5 cxb5 33.Rxh4 Bc6 34.
f6 Rf8 35.Rb4 Rxf6 36.Nxb5 Rf2 37.a4 Nf5 38.Rb3 Bxb5 39.Rxb5 Ne3 40.
Kb2 Nxc2 41.Rg5 Nd4+ 42.Kc3 Nc6 43.a5 Ka7 44.Rb5 Ka6 45.Rb6+ Ka7 $17 )
24...Qxd4 $201 25.exd4 $2 $21
{ Stockfish 10 64: 27:-5.53}
( 25.Rxd4 {27:-3.96} 25...c6 $19 )
25...h4 $201 26.Rxf7 $4 $21
{ Stockfish 10 64: 26:-8.65}
( 26.Nd1 {28:-5.50} 26...Bf3 $21 )
26...h3
( 26...h3 {25:-8.66} 27.Rxg7 h2 $21 )
*
Comment stripped:
[Event ""]
[Site ""]
[Date "????.??.??"]
[Round ""]
[White ""]
[Black ""]
[Result "*"]
1.d4 e5 2.dxe5 d6 3.Nf3 Bg4 4.Bf4 Nc6 5.exd6 Qf6 6.e3 Bxd6 7.Bxd6 O-O-O 8.
Nc3 Rxd6 9.Bd3 Qh6 10.Qe2 Nf6 11.O-O-O Nd4 12.Qf1 Nxf3 13.gxf3 Bxf3 14.
Bf5+ Kb8 15.Rxd6 Bxh1 16.Rd4 Qxh2 17.f4 a6 18.Qd1 Qh4 19.b4 Nh5 20.b5 Ng3
21.Bd3 axb5 22.Bxb5 h5 23.Rd7 Qf6 24.Qd4 Qxd4 25.exd4 h4 26.Rxf7 h3 *
