(D90) Schlechter
1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 c6
(D90) Flohr Attack
1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5.Qa4+
(D90) Exchange
1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5.cxd5