Mate in three or more is lesson 5 of 8 in Real-game tactics 4: Removing the defender and sacrifices, a tactics course suited to players rated around 1200 (improving players). Longer mating combinations: keep checking, keep the king boxed in, and count every reply. It has 7 interactive exercises: 7 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 3. (2 positions)
Black to move: mate in 3. (5 positions)
Worked examples
White to move: mate in 3. 1.Qg8+ Kd7 2.Be6+ Kd6 3.Qg3#. Every move in the line was forcing. Mate in 3.
Black to move: mate in 3. 1...Qf2+ 2.Qg2 Qxf4+ 3.Qg3 Qxg3#. The queen on f4 attacked the king and the rook at once. Mate in 3.
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