The Beginner's Material Scale of Rook + Pawn ( "6 points total" ) = Bishop + Knight ( "6 points total" ) is here seen as just DEAD WRONG. Watch in this game how Black gets a winning position by playing rather ordinary, straightforward moves...
1.e4
e5
2.Nf3
Nc6
3.Bc4
Bc5
4.d3
d6
5.Nc3
Nf6
6.Ng5?!
0-0
7.Nxf7?
Rxf7
8.Bxf7+
Kxf7
9.0-0
[9.Be3
Bg4
(9...Kg8
10.Qd2
Nd4
11.0-0-0
) 10.Qd2
Nh5
11.h3
(11.0-0
Nd4
12.Bg5
Qd7
13.Kh1
h6
14.Be3
Nf3
15.Qc1
Qe7
16.Bxc5
Qh4
17.h3
Qg3
18.fxg3
Nxg3#
) 11...Bxe3
12.fxe3
(12.Qxe3
Nf4
13.0-0
Bxh3
14.gxh3
Qg5+
) 12...Ng3
(12...Be6
; 12...Qh4+
13.Qf2+
Qxf2+
14.Kxf2
Be6
15.g4
Nf6
16.Raf1
Rf8
17.Kg3
g5
) 13.hxg4
(13.Rg1
Bh5
14.Qf2+
; 13.Qf2+
) 13...Nxh1
14.0-0-0
Qh4
]
9...Bg4
10.Qe1?!
[10.Ne2
Nd4-+
]
10...Nd4
11.Qd2
Nh5
12.f3
[12.g3
Nf3+
; 12.h3
Bxh3
13.gxh3
Nf3+
]
12...Ne2+
13.Kh1
Nhg3+
14.hxg3
Nxg3+
15.Kh2
Qh4#
0-1