Practised 17 positions on 7th-Rank Rook Pawn
Practised 11 positions on Key Squares
Practised 8 positions on Opposition
Practised 5 positions on Clearance
Practised 5 positions on Undermining
Practised 8 positions on Opposition
Practised 5 positions on Clearance
Practised 5 positions on Undermining