Complete the following sentence: A famous example of the e4-e5 break leading to a kingside attack occurred in the game Penrose<unk>Tal from the
1960 Leipzig Olympiad. 19.e5! dxe5 20.f5! Bb7 21.Rad1 Ba8 22.Nce4 White installed a powerful knight on e4, while Black's pieces were hemmed in by the pawn on e5. White installed a powerful knight on e4, while Black's pieces were hemmed in by the pawn on e5. Penrose<unk>raised<unk>through<unk>on the f-file and scored a stunning upset over the reigning world champion.<unk> Keres, Estonia<unk>Finland match, Helsinki 1960