Defense in Chess

Opening Principles:
- Control the center squares – d4-e4-d5-e5
- Develop your minor pieces toward the center – piece activity is the key
- Castle
- Connect your rooks
Tactics...tactics...tactics...
The objective of development is about improving the value of your pieces by increasing the importance of their roles. Well-developed pieces have more fire-power than undeveloped pieces and they do more in helping you gain control.
Now we will look at 5 practical things you can do to help you achieve your development objective.
They are:
- Give priority to your least active pieces.
- Which piece needs to be developed (which piece is the least active)
- Where should it go (where can its role be maximized)
- Exchange your least active pieces for your opponent’s active pieces.
- Restrict the development of your opponent’s pieces.
- Neutralize your opponent’s best piece.
- Secure strong squares for your pieces.
Don’t help your opponent develop.
There are 2 common mistakes whereby you will simply be helping your opponent to develop:
- Making a weak threat that can easily be blocked
- Making an exchange that helps your opponent to develop a piece
Pre Move Checklist:
- Make sure all your pieces are safe.
- Look for forcing moves: Checks, captures, threats. You want to look at ALL forcing moves (even the bad ones) as this will force you look at, and see the entire board.
- If there are no forcing moves, you then want to remove any of your opponent’s pieces from your side of the board.
- If your opponent doesn’t have any of his pieces on your side of the board, then you want to improve the position of your least active piece.
- After each move by your opponent, ask yourself: "What is my opponent trying to do?"

one defensive tactic i often employ is a bishop in front of a pawn. in the right game position this defensive tactic may remain in tact and be helpful for a while.

In general, in defense try to look for moves that are not passive. As much as possible you want to find moves that not only solidify your position, but pose problems for your opponent as well. Passive moves are usually easy to play against and give the opponent yet more time to bring additional pressure to bear. Instead you want moves, when possible, that can help swing the initiative to you.
Here is an example from a recent game of mine. It is White to move and White is under pressure. If Black can play d3, White is in for a world of hurt. There is one move here that is clearly better than the others. Can you see why?