Recognize the Master

Guess who is this Chess Player?

Clue: He was India's first International Master

CANDIDATE MOVES

The best possible moves in a chess position are known as Candidate Moves. Strong players don’t waste time in thinking of all possible moves. Instead, they focus only on the candidate moves.
In order to think of the candidate moves, the following points should be kept in mind.

1. Identify the weaknesses in the opponents position (for example unprotected pieces and weak pawns) and consider moves that help take advantage of them.
2. Consider moves that help your pieces occupy strong squares.
3. Think of moves that improve the position of any piece that is not developed, or on a weak square.
4. Consider all Captures.
5. Consider all Checks.

After getting your candidate moves, take one candidate move and calculate the next 2-3 moves for both you and your opponent by visualizing the position in your head. At the end of this sequence, visualize the position and store it in your mind. Then, do the same for the next chosen candidate move.
Usually you need to think of 3-4 such candidate moves, though in tactical position there might only be 1-2 candidate moves.
It is not important to think about too many moves in a position, but it is important to analyze 2-3 moves deep for every candidate move.

Example of Candidate Moves

More about Candidate Moves: Wiki, BYC, Chesscorner, CSE

Below is a good video

Skewer

Skewer is a tactical move in chess wherein if the attacked piece moves, another of his pieces behind can be captured.

More about Skewer on Wiki, ChessCorner, Chess.com, TCW, About