Chess101Chess

Practised 11 positions on Key Squares
Practised 10 positions on Overloaded Pieces
Practised 9 positions on Opposition
Practised 6 positions on Double Check
Practised 5 positions on Zwischenzug

Practised 10 positions on Discovered Attacks
Practised 8 positions on The Skewer
Practised 8 positions on The Pin
Practised 7 positions on X-Ray