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Chess Opening Principles: What to Do in the First 10 Moves

Beginners often believe they need to memorise openings. You don't — not for a long time. Openings at every level below master are decided not by theory but by principles. Learn the why, and reasonable moves suggest themselves in any position.

Principle 1: Fight for the centre

The four central squares — d4, d5, e4, e5 — are the high ground of chess. Pieces in the centre control more squares and reach every part of the board quickly; pieces on the edge are spectators. That's why almost every good opening starts with 1.e4 or 1.d4: the pawn stakes a claim and opens lines for the pieces behind it.

You don't have to occupy the centre — controlling it from a distance counts too — but you can never afford to ignore it.

Principle 2: Develop your pieces — all of them

Development means moving pieces off their starting squares to active posts. The rough order that serves you well: knights before bishops, minor pieces before the queen, castle in the middle of it all, connect the rooks last.

Three corollaries do most of the work:

• Don't move the same piece twice in the opening without a very good reason. Every repeat move is a free move for your opponent.
• Don't bring the queen out early. She gets chased around by minor pieces, and every chase develops your opponent's army for free.
• Don't grab pawns at the cost of development. Many a greedy pawn-hunter has been checkmated while three pieces slept at home.

Principle 3: Get your king safe

Castle early — usually within the first ten moves. The centre is about to explode with open files, and a king caught in the crossfire loses games instantly. Castling also activates a rook, so it's development and safety in one move.

A model opening, principle by principle

The Italian Game shows all three principles working together: 1.e4 e5 (centre) 2.Nf3 Nc6 (development, and White's knight attacks e5) 3.Bc4 Bc5 (bishops to active diagonals) 4.O-O (king safety). Four moves, nothing memorised — every move simply follows the rules above.

When to break the rules

Principles are defaults, not laws. Concrete tactics outrank all of them: if you can win a piece or deliver mate, do it, principles be damned. The skill you're building is knowing what to do when nothing concrete is on the board — which is most of the time.

Once the principles are second nature, learning named openings becomes easy, because you'll recognise them as principle-following move orders with a few sharp ideas attached. Until then: centre, develop, castle — and go find a game.