Practised 18 positions on Checkmate Patterns II
Practised 6 positions on Opposition
Practised 2 positions on Key Squares
Practised 2 positions on Checkmate Patterns III
Practised 2 positions on Overloaded Pieces
Practised 1 position on Undermining
Practised 2 positions on Key Squares
Practised 2 positions on Checkmate Patterns III
Practised 2 positions on Overloaded Pieces
Practised 1 position on Undermining