4 x Introduction (3.25 avg depth)
50 x Chapter 1: Fork (2.22 avg depth)
45 x Chapter 2: Pin (2.42 avg depth)
32 x Chapter 3: Skewer (2.75 avg depth)
38 x Chapter 4: Deflection and Decoy (2.95 avg depth)
38 x Chapter 5: Discovered Attack (3.11 avg depth)
38 x Chapter 6: Discovered and Double Check (3.55 avg depth)
20 x Chapter 7: Removing the Guard (2.80 avg depth)
38 x Chapter 8: In-Between Moves (3.45 avg depth)
32 x Chapter 9: Trapped Piece (2.75 avg depth)
38 x Chapter 10: Pawn Promotion (3.61 avg depth)
38 x Chapter 11: Opening and Closing Lines (3.08 avg depth)
26 x Chapter 12: Forcing a Draw (4.62 avg depth)
35 x Chapter 13: Test Papers (3.23 avg depth)
