This article is aimed at beginners who often plays h3 or h6 move to prevent Bg5 or Bg4, pinning their knights against their queen. This is dangerous but not every time. The same pin is dangerous if you have already castled king side and your opponent has some ways to exploit it, for example Bg5 followed by Nd5. Sometime you can use opponent’s Bg5/Bg4 moves to gain tempo by moving your pawn to h6 or h3. And if you’re opponent tries to maintain the pin with Bh4/Bh5 then you can further develop attack with g5/g4. Not only can this break the pin but it can also shut the opponent’s bishop out of the game. Also note that moving pawns won’t weaken your king position because you haven’t committed castle on the king side.
In the following game Mikhail Chigorin demonstrates this aggressive strategy against premature pin. At the same time it also emphasises the importance of studying classic games.