Chess Wiki
Advertisement
a b c d e f g h
8 a8 b8 c8 d8 e8 f8 g8 k h8 8
7 a7 b7 c7 p d7 b e7 f7 g7 h7 p 7
6 a6 b6 c6 d6 p e6 f6 g6 h6 6
5 a5 p b5 c5 d5 P e5 P f5 g5 h5 5
4 a4 b4 c4 d4 e4 f4 g4 r h4 n 4
3 a3 b3 c3 d3 e3 f3 g3 h3 3
2 a2 b2 P c2 d2 e2 Q f2 P g2 h2 P 2
1 a1 b1 c1 d1 e1 f1 K g1 h1 1
a b c d e f g h
1...e6 Bb5 2.Qxb5

As a chess tactic, interference is defined when a piece obstructs the view of a defender to attack the undefended piece. For example, 1.e6 in the position on the right stops the bishop from defending the rook, alas forking both pieces.

Advertisement