[what is this?]

[what is this?]

Art of Attack 1 game, 1943 Attacking the queenside 1 game, 1858 baburin 4 games, 1953-1996 Benko 1 game, 1985 Caro Cann 6 games, 1935-2007 Giuco Piano 4 games, 2004-2008 Gruenfeld 1 game, 1988 IQP 7 games, 1917-1995 Marovic-Understanding Pawn power 4 games, 1937-1986 Opening traps 8 games, 1620-1993 Pawn structures 1 game, 1994 pieces 3 games, 1950-1967 Positional Games 3 games, 1917-2005 Scotch- Ne7 1 game, 1920 Slav games The best slav games 2 games, 1999-2004 Trexler Variation 15 games, 1890-2000