CA Encyclopaedia of Semi-Closed Games

This great package includes articles on the Gruenfeld Defense (by GMs Bagirov, Gipslis, Mikhalchishin, Sakaev, Zaitsev), Modern-Benoni (by GM Shipov), Trompovsky Attack, Benoni, Old Indian Defense and Queen s Pawn Opening (by GM Gufeld). It comes in a thorough and convenient classification, and a database (95,000 games) with the openings in question.