Squares, pitfalls & pins

In this lesson the same principle as in the previous two lessons, the difference being that here we focus on the pin.

In Example 1, white must cleverly attack a piece and indirectly a mating square.

In Example 2, white must cleverly attack a pinned piece. If white does not choose the right move, black escapes by counterattacking a checkmating square.

What do you have to do?

Win material by pinning or attacking a pinned piece. Be careful not to give the other player a chance to defend by counterattacking.