Attacking a kingside castled position almost always involves a sacrifice of material so you can breakthrough to mate the opponent's king or at least make him give up a lot of material so that it gives him a lost game. The book used for this position had it as Schlechter-Lasker, Cambridge Springs, 1904. That didn't seem right, so a quick database check found it to be Schlechter- Przepiorka, Nurmeberg, 1906. Lasker losing so quickly raised doubts. In either event, it is a great finish by Schlechter. In fact, Black resigned after White's move in this position. See if you can figure out the move and what he saw that made him resign.

Solution:

Here's the whole game: Schlechter,Carl - Przepiorka,Dawid

DSB–15.Kongress Nuremberg (8), 1906

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Nbd7 5.Bg5 Be7 6.e3 b6 7.cxd5 Nxd5 8.Nxd5 exd5 9.Bf4 0–0 10.Bd3 c5 11.0–0 Bb7 12.Rc1 Re8 13.Ne5 Nxe5 14.Bxe5 cxd4 15.Rc7 Bc8 16.Qh5 g6 and after 17.Bxg6 Black Resigned. Here's why:

17.Bxg6 fxg6 [17...hxg6 18.Qh8#] 18.Qh6 Kf7 [18...Bf8 19.Qxh7#] 19.Qxh7+ Ke6 20.Qxg6+ Bf6 [20...Kxe5 21.f4#] 21.Rc6+ Kd7 22.Rd6+ Kc7 23.Qf7+ Re7 24.Rxd8+ Kxd8 25.Bxf6 with mate to follow.

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