Practised 16 positions on The Fork
Practised 8 positions on Discovered Attacks
Practised 8 positions on Opposition
Practised 8 positions on The Pin
Practised 8 positions on The Skewer
Practised 3 positions on Piece Checkmates II
Practised 8 positions on Opposition
Practised 8 positions on The Pin
Practised 8 positions on The Skewer
Practised 3 positions on Piece Checkmates II