Depends on the situation. In some situations, thinking ahead 1-2 moves is all that's required. In others, it's possible to calculate 10 moves ahead.
Think Ahead!

Same here. It depends on the situation. I tend to think 6-8 moves ahead, if it is deadly important i tend to think 10+
How many moves in advance can you think for your next turn in each game? I can think of only 2-3 moves ahead.