Mate, don't stalemate is lesson 2 of 7 in Endgame 1: Basic mates and running pawns, an endgame course suited to players rated around 600 (beginners). With a queen against a lone king, the danger is stalemate: always leave the king a move until you can mate. It has 6 interactive exercises: 6 calculated lines from real positions. You play every move on a board and get feedback straight away. The lesson is free.
What you practise
White to move: mate in one.
Black to move: mate in one. (3 positions)
White to move: mate in 2. (2 positions)
Worked examples
White to move: mate in one. 1.Qh1#. Careful: Qf5 would have been stalemate. Checkmate.
Black to move: mate in one. 1...Qh1#. Careful: Qe4 would have been stalemate. Checkmate.