Calculation: three moves deep is lesson 6 of 9 in Real-game tactics 10: Grandmaster calculation, a tactics course suited to players rated around 2400 (advanced players). Combinations of three moves or more. See the whole line, with the opponent's best replies, before you play. 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
Black to move and win. (4 positions)
White to move and win. (3 positions)
Worked examples
Black to move and win. 1...Nh5 2.Qh4 Bf6 3.Qxh5 gxh5. The quiet Nh5 left the opponent without a good answer. You come out 6 points ahead in material.
Black to move and win. 1...Nd7 2.Qf7 Nc5+ 3.Ke3 Rxf7. The quiet Nd7 left the opponent without a good answer. You win the queen on f7 and come out 9 points ahead.
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