Calculation: three moves deep is lesson 2 of 9 in Real-game tactics 7: Calculation and defence, a tactics course suited to players rated around 1800 (strong club 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
White to move and win. (4 positions)
Black to move and win. (3 positions)
Worked examples
White to move and win. 1.Bxe3 Nxe3 2.Rd3 Ng4 3.Bxe8. Every move in the line was forcing. You win the rook on e8 and come out 5 points ahead.
White to move and win. 1.Rxc7 Kxc7 2.Qc2+ Kb8 3.Nd7+. The invasion on the 7th rank decided it. The position is winning.
More in Real-game tactics 7: Calculation and defence
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