Memberships on shredderchess.net
Play vs. Shredder Puzzle of the Day Weekly Chess Problems Opening Database Endgame Database
Shredder Classic 5 Mac Shredder Classic 5 Mac
EUR 29.99
Shredder 13  WIndows Shredder 13 WIndows
EUR 49.99
Deep Shredder 13 Linux Deep Shredder 13 Linux
EUR 99.99
Chess Tutor Step 2 Chess Tutor Step 2
EUR 19.95