The examples (middlegame, endgame) are usually well analysed and theoretically wise the material is large and frequently updated. If you have any questions while studying the material, let me know and I will help. It is possible to buy it using PayPal and sending payments to firstname.lastname@example.org. Material will be sent in pgn/cbv files directly to your e-mail address.
Check out the free samples here.
Today’s offers are:
Catalan – US$ 15 (instead of US$ 20)
Queen’s Indian – US$ 10 (instead of US$ 15)
Nimzo-Indian – US$ 15 (instead of US$ 20)
King’s Indian – US$ 25 (instead of US$ 35)
10 examples on 2 Rooks versus 3 minor pieces – US$ 2
10 examples on “Inactive” Rook – US$ 2
10 examples on variety of basic endgames – US$ 2
10 examples on Queen versus pawns – US$ 2
If you have any questions about the material, send an e-mail to email@example.com.