Upgrade Peshk@ to Multiplatform

Upgrade Chess Middlegame Collection to Multiplatform 5x
Levels 7 - 9 [Rating 1800-2400]; Strategy. More than 3000 examples and 4000 exercises on 18 strategic motifs.

Upgrade Training Package for Interm. Players to Multiplatform 5x
Chess Training Package for intermediate players consists of five magnificent educational programs that cover all the aspects of chess: Opening, Tactics, Strategy and Ending.

Upgrade Encyclopedia of Middlegame III to Multiplatform 5x
Levels 7 - 9 [Rating 1800-2400]; Strategy. More than 520 examples and 700 exercises on chess middlegame.

Upgrade Encyclopedia of Middlegame IV to Multiplatform 5x
Levels 7 - 9 [Rating 1800-2400]; Strategy. More than 520 examples and 850 exercises on chess middlegame.