Vassily Smyslov (World Chess Champion 1957-1958) was known for his positional style, and, in particular, his precise handling of the endgame, but many of his games featured spectacular tactical shots as well (Like this one below!) . He made enormous contributions to chess opening theory in many openings, including the English Opening, Grünfeld Defence, and the Sicilian Defence. He has a variation of the Closed Ruy Lopez named for him: the line runs 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.0-0 Be7 6.Re1 b5 7.Bb3 d6 8.c3 0-0 9.h3 h6. In the Grünfeld Defence, the continuation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 0-0 7.e4 Bg4 8.Be3 Nfd7 is known as the Smyslov Variation and remains a major variation. Smyslov also successfully revived the Fianchetto Defence to the Ruy Lopez (1.e4 e5 2.Nf3 Nc6 3.Bb5 g6) in the 1970s. In the Slav Defence, the side line 1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.Nf3 dxc4 5.a4 Na6 is named the Smyslov Variation.
In this game he gives IM Kottnauer a very short (21 moves) lesson in how not to play the Scheveningen Variation of the SIcilian Defense in a game that might remind you of GM Polugayevsky's Variation in the Najdorf Sicilian.