41 x Introduction & Quickstarter Guide (14.80 avg depth)
40 x 1. Catalan mainline with 6... dxc4 - the 10.Bg5 lines (15.98 avg depth)
9 x 2. Catalan mainline 6... dxc4 - the Alternative 10.Bf4 (14.33 avg depth)
16 x 3. Catalan mainline with 6... dxc4 7.Qc2 b6 (16.06 avg depth)
8 x 4. Catalan mainline with 6... dxc4 7.Qc2 c6 (15.50 avg depth)
13 x 5. Catalan mainline with 6... dxc4 7.Qc2 b5 (16.31 avg depth)
6 x 6. Catalan mainline with 6... dxc4 7.Qc2 alternatives (11.00 avg depth)
56 x 7. Catalan mainline closed system with ...c6 or ...g6 (14.63 avg depth)
22 x 8. Catalan mainline 4... Bb4+ 5.Nd2 (12.50 avg depth)
26 x 9. Catalan mainline 3... Bb4+ 4.Nd2 c5 (17.00 avg depth)
33 x 10. Catalan 3.Nf3 Nf6 4.g3 Bb4 (13.91 avg depth)
27 x 11. Catalan open 4... dxc4 5.Nf3 c5 (15.19 avg depth)
30 x 12. Catalan open 4... dxc4 5.Nf3 a6 (15.43 avg depth)
23 x 13. Catalan open 4... dxc4 5.Nf3 Bb4+ (13.48 avg depth)
23 x 14. Catalan open 4... dxc4 5.Nf3 Nc6 (14.17 avg depth)
17 x 15. Catalan open 4... dxc4 5.Nf3 c6 (12.94 avg depth)
11 x 16. Catalan open 4... dxc4 5.Nf3 Nbd7/Bd7 (13.45 avg depth)
40 x 17. King's Indian Defence 3.g3: Panno Systems 6.... Nc6 (14.75 avg depth)
23 x 18. King's Indian Defence 3.g3: with 6.... c6 (14.35 avg depth)
30 x 19. King's Indian Defence 3.g3: 8... exd4 lines (16.83 avg depth)
34 x 20. King's Indian Defence 3.g3: mainlines with 7... e5 (17.47 avg depth)
36 x 21. King's Indian Defence 3.g3 d5 (14.36 avg depth)
50 x 22. Catalan vs Modern Benoni (17.62 avg depth)
27 x 23. Benko Gambit g3 systems (15.04 avg depth)
21 x 24. Leningrad Dutch g3 systems (12.81 avg depth)
90 x 25. KID/Benoni/Benko/Leningrad Dutch structures (11.03 avg depth)
10 x 26. Benko 7.e4 systems (16.10 avg depth)
16 x 27. Dutch 2.Nc3 systems (10.56 avg depth)
10 x 28. The two Knights Tango (10.30 avg depth)
12 x 29. Budapest Gambit (10.00 avg depth)
24 x 30. 1....e6 2...f5 and 2...Bb4+ (10.21 avg depth)
30 x 31. d4 b6 systems (10.93 avg depth)
9 x 32. Albin counter gambit (9.33 avg depth)
15 x 33. QGD 2nd move alternatives (10.47 avg depth)
28 x 34. QGD 3rd move alternatives (12.86 avg depth)
52 x 35. Slav Defence (11.19 avg depth)
35 x 36. KID 3.g3 Slav 4.g3 g6 (13.03 avg depth)
70 x 37. QGA (11.64 avg depth)
11 x 38. Englund Gambit (6.18 avg depth)
24 x 39. Old Indian Defence (10.21 avg depth)
36 x 40. 2...e6, 3...d5: lines with ...Bd6 (14.78 avg depth)
15 x 41. Tarrasch (12.33 avg depth)
20 x Model Games (41.60 avg depth)