Welcome to Lesson 27 of Chess Summer School. This caps off our week of three pawns across. Next week will be about attacking fianchetto structures
This is from Klebaner-Mehaner, correspondence, 1965. 1.Nf6+ Kh8 [1...gxf6 2.Qg4+ Kh8 3.Qh4 and the pawn is pinned] 2.Nxh7 g6 3.Nxf8 Qxf8 4.Rfd1 Nd5 5.e4 Nb6 6.Qe3 Rb8 7.Rac1 Bd7 8.b3 Kg8 9.f4 Be8 10.f5 exf5 11.exf5 gxf5 12.Bxf5 and Black is defenseless.