Introduction (1 variation)

Quickstarter (42 variations, 15.4 avg. trainable depth)

1) Rare 2nd Moves (9 variations, 10.4 avg. trainable depth)

2) Katalimov: 2…b6 / Nimzowitsch: 2..Nf6 (37 variations, 15.6 avg. trainable depth)

3) O’Kelly: 2…a6 (43 variations, 15.7 avg. trainable depth)

4) Accelerated Dragon: 2…g6 3.d4 Bg7?! (28 variations, 15.0 avg. trainable depth)

5) Accelerated Dragon: Maroczy Bind (39 variations, 17.8 avg. trainable depth)

6) 2…e6 with 4…Qb6 and 4…Bc5 5.Be3 Qb6 (8 variations, 13.0 avg. trainable depth)

7) 2…e6 with 4…Nf6 5.Nc3 Qb6 and 5…Bb4 (30 variations, 15.7 avg. trainable depth)

8) 2…e6 – Four Knights: 4…Nf6 5.Nc3 Nc6 (28 variations, 18.0 avg. trainable depth)

9) 2…e6 – Paulsen: 4…Nc6 5. Nc3 Bc5 and 5…a6 (15 variations, 14.8 avg. trainable depth)

10) 2…e6 – Taimanov: 4…Nc6 5.Nc3 Qc7 (42 variations, 17.6 avg. trainable depth)

11) 2…e6 -Scheveningen: Keres attack 4…Nf6 5.Nc3 d6 (7 variations, 14.4 avg. trainable depth)

12) Kan Sicilian: Various 5th Moves (35 variations, 15.4 avg. trainable depth)

13) Kan Sicilian: Mainline with 5…Nf6 / 5…Bc5 (33 variations, 16.2 avg. trainable depth)

14) 2…Nc6 with 4…d5 (7 variations, 16.9 avg. trainable depth)

15) 2…Nc6 – Grivas Sicilian (37 variations, 17.5 avg. trainable depth)

16) 2…Nc6 – Loewenthal: 4…e5 5. Nb5 a6 (32 variations, 16.4 avg. trainable depth)

17) 2…Nc6 – Kalashnikov: 7…Be6 and 7…Be7 (42 variations, 17.4 avg. trainable depth)

18) 2…Nc6 – Kalashnikov: 7…b5 (30 variations, 17.6 avg. trainable depth)

19) 2…Nc6 – Sveshnikov (24 variations, 17.7 avg. trainable depth)

20) Rare 5th moves after 2…d6 / 2…e6 / 2..Nc6 (7 variations, 15.0 avg. trainable depth)

21) 2…d6 – Dragodorf (18 variations, 18.1 avg. trainable depth)

22) 2…d6 – Dragon with 9.O-O-O Bd7 and 9.O-O-O Nxd4 (15 variations, 18.9 avg. trainable depth)

23) 2…d6 – Dragon with 9.O-O-O d5 (36 variations, 21.3 avg. trainable depth)

24) 2…d6 – Rauzer: Rare 6th moves (40 variations, 17.6 avg. trainable depth)

25) 2…d6 – Rauzer with 6…e6 and 7…Qb6 (11 variations, 14.8 avg. trainable depth)

26) 2…d6 – Rauzer with 6… e6 and 7…Be7 (25 variations, 16.8 avg. trainable depth)

27) 2…d6 – Rauzer with 6…e6 and 7…a6 (33 variations, 18.1 avg. trainable depth)

28) 2…d6 – Najdorf English Attack: Rare Black Setups (33 variations, 17.1 avg. trainable depth)

29) 2…d6 – Najdorf English Attack: Main without 8..h5 (15 variations, 22.6 avg. trainable depth)

30) 2…d6 – Najdorf English Attack: Main with 8…h5 (19 variations, 19.2 avg. trainable depth)