Practised 10 positions on Overloaded Pieces
Practised 7 positions on X-Ray
Practised 6 positions on Double Check
Practised 5 positions on Undermining
Practised 3 positions on Piece Checkmates I
Practised 6 positions on Double Check
Practised 5 positions on Undermining
Practised 3 positions on Piece Checkmates I