A pinch and a backpick are the same play: two players on the same team close on the player with the puck, cut off their escapes, and steal it.
Get close — usually one on each side — so even if they touch the puck first, they have nowhere to take it. Stay tight: a half-meter move by the player with the puck should still run into a stick or a body. Steal the puck if you can, or leave the puck where one of you can pick it up clean.
Play the puck, not the person. Parking beside someone without touching the puck can become screening; swimming through them is barging.
In your zone
As a forward, when the other team has the puck near you, drop as soon as your back stops them. Sandwich the opponent with your back so they have nowhere to go. As they curl, rip the puck off their stick — or wait for your back to knock it loose and over to you.
The same idea works anywhere on the court. Two close bodies beat one.
Example near the left wall
White forward closes in while the white back engages.
Stay low. Read the black player’s curl. Take the puck as they start to turn, and get your body between them and the puck so they cannot re-steal it.
Success! You’ve stolen the puck, and your body is between the puck and the opposing player.