Strong
Strong move
A tactical move which will give a large benefit, if successful.
The strongest move gives the best result locally, but may not be the best move globally.
To be strong a move must be correct. If the move is not correct, it is an overplay.
Jared: Many players 4kyu - 1dan, like myself, try to play the strongest moves they can find, but unfortunately often end up with overplay.
Strong positions
Strong player
A player with a high rank; professional players are often referred to as strong, and a strong amateur is one of a high amateur dan ranking.