Practised 15 positions on Checkmate Patterns IV
Practised 11 positions on Key Squares
Practised 8 positions on Opposition
Practised 6 positions on 7th-Rank Rook Pawn
Practised 4 positions on Piece Checkmates II
Practised 8 positions on Opposition
Practised 6 positions on 7th-Rank Rook Pawn
Practised 4 positions on Piece Checkmates II