Under cover of the powerfully-entrenched knight, White easily demolishes the black defences.
18...Ng5 19.Rf2 Ne6 20.Qc3 Rd7 21.Rd1 Kb7 22.d4 Qd6 23.Rc2 exd4 24.exd4 Nf4 25.c5 Nxd5 26.exd5 Qxd5 27.c6+ Kb8 28.cxd7 Qxd7 29.d5 Re8 30.d6 cxd6 31.Qc6
Unity Chess Club
Akiba Rubinstein Richard Teichmann Vienna 1908 White to move
For a successful attack, White needs to open lines on the kingside. For the sake of this, he sacrifices a bishop:
Not only attractive, but effective. 18.g6 would keep a strong initiative, but allows Black, after 18...h6, or 18...fxg6 19.hxg6 h6, to somewhat fortify the approaches to his king.
Other moves also lose:
A) 21...exf3 22.gxf7+ Qxf7 23.hxg7!;
B) 21...fxg6 22.Nh4! g5 23.h7+ Kf7 24.Nf5 Qe6 25.Rxg5 g6 26.Rh6+–;
C) 21...f5 22.Qxc4+ Qe6 23.Qxe6+ Rxe6 24.Ng5 Rf6 25.Nf7 gxh6 26.Rxh6+–.
A) 21...exf3 22.gxf7+ Qxf7 23.hxg7!;
B) 21...fxg6 22.Nh4! g5 23.h7+ Kf7 24.Nf5 Qe6 25.Rxg5 g6 26.Rh6+–;
C) 21...f5 22.Qxc4+ Qe6 23.Qxe6+ Rxe6 24.Ng5 Rf6 25.Nf7 gxh6 26.Rxh6+–.