LoongGjk

Practised 15 positions on Checkmate Patterns IV
Practised 10 positions on Discovered Attacks
Practised 8 positions on Piece Checkmates II
Practised 8 positions on The Skewer
Practised 7 positions on The Pin
Practised 6 positions on Double Check
Practised 3 positions on Overloaded Pieces

Practised 19 positions on Checkmate Patterns I
Practised 18 positions on Checkmate Patterns III
Practised 6 positions on Piece Checkmates I
Practised 1 position on The Pin