Forcing moves

One of the most satisfying moments in chess is when you see several moments ahead and your opponent has no idea that you already won the game or what is about to happen.

Combinations are series of forcing moves, often involving sacrifices, that can help to win the game, let's see some forced moves combinations.

Black has a lot of pressure against White's weak h2 pawn. Can you find a sacrifical combination that forces checkmate?

After the Queen sacrifice, checkmate is unavoidable by checking the king on every move.

Rook h8 forces the king to keep running and at the same time, keep cornering itself.

Checkmate delivered, white had no chance.