Upgrade Peshk@ to Multiplatform

Upgrade Checkmates I to Multiplatform 5x
Level 1 [Rating 200-600]; Tactics, School Software. 40,000 exercises on elementary checkmates.

Upgrade Training Package for Beginners to Multiplatform 5x
Training Package for Beginners includes huge carefully selected material to improve the skill level of newer players.

Upgrade Chess Tactics Level 1 to Multiplatform 5x
Levels 1 - 2 [Rating 200-1000]; Tactics. 570 tactical exercises classified by theme and difficulty ensure variety and a good understanding of basic tactics.

Upgrade Checkmates II to Multiplatform 5x
Level 2 [Rating 600-1000]<br /> Tactics, School Software. 77,000 mate in one exercises for beginners.