Scotch Game Clearance For Skewer Chess Puzzles

Scotch Game Clearance for Skewer is a tactical idea that can arise from the Scotch Opening after 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4, when central exchanges open files and diagonals. The key feature is a piece or pawn being moved or captured so a long-range piece, usually a bishop or rook, can attack a more valuable piece behind it in a skewer.