Double check, part 2 is lesson 2 of 6 in Discovered attacks, a tactics course suited to players rated around 1100 (improving players). When the moving piece and the piece behind it both give check, no block or capture helps: the king has to move, and often it has nowhere to go. More positions, a little harder. It has 10 interactive exercises: 10 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 2. (5 positions)
Black to move: mate in 2.
Black to move: use a double check.
White to move: mate in 3. (2 positions)
White to move: use a double check.
Worked examples
White to move: mate in 2. 1.Nd6+ Kd8 2.Nf7#. Double check: the knight and the queen on a4 both gave check, so only a king move was possible. Mate in 2.
White to move: mate in 2. 1.gxh6+ Kh7 2.Qg7#. Double check: the pawn and the queen on g4 both gave check, so only a king move was possible. Mate in 2.
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