Rook Sac on chess.com

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a.n.other vs GJB

1.d4 Nf6
2.e3 d5
3.Bd3 Nc6
4.a3 e5
5.dxe5 Nxe5
6.Ne2 Bg4
7.f3 Bh5
8.O-O Bc5
9.Ng3 Bg6
10.Kh1 Qd7
11.Bxg6 hxg6
12.e4 d4
13.b4 Bb6
14.Bb2 O-O-O
15.Nd2 Rxh2+
16.Kxh2 d3
17.Nh1 Rh8+
18.Kg3 Nh5+
19.Kh2 Nf4+
20.Kg3 Nxg2
21.Kxg2 Qh3#