Piece value
Piece value is the rough points scale players use to compare material: a pawn counts one, a knight and a bishop three each, a rook five and a queen nine.
Also called: relative value of pieces
The scale is bookkeeping. Before you start a series of captures, add up what leaves the board on each side; if you give more points than you get, you need a concrete reason such as mate, a promotion or a crushing attack.
Some trades come up again and again. A minor piece for three pawns is roughly level on paper. A rook for a bishop or knight costs about two points, which is why winning that trade is called winning the exchange. Two minor pieces for a rook and a pawn is close to even by the count, though in the middlegame the two pieces are often stronger.
The numbers are averages over many positions, and the board in front of you can move them. Knights do well when pawns are locked and they have a protected square; bishops prefer open lines, and owning both bishops is usually worth a little extra. Rooks need open files. Pawns gain worth as they near promotion. The king gets no number at all, since losing it ends the game, yet in the endgame it fights like a strong piece.
The common error is trusting the count during a tactic. If a sacrifice forces mate or wins more material later, the points spent along the way do not matter.
A neighboring idea is Exchange advantage. Being up the exchange means you hold a rook while the opponent holds a bishop or knight in its place, a material edge of about two points that is often decisive once lines open and the rook finds targets.
Compare it with Rook versus minor piece. Rook versus minor piece is an ending or imbalance in which one side has a rook and the other a bishop or knight, so the result depends on the pawns and on how active the pieces are.
A neighboring idea is Material advantage. A material advantage means one side has more total piece value on the board than the other, for example an extra pawn or an extra piece, and can usually convert it by trading down.
Where "Piece value" fits your own play is easier to judge with a coach reading your games; the first lesson is a paid one-on-one review that ends in a written plan.
Related terms
A material advantage means one side has more total piece value on the board than the other, for example an extra pawn or an extra piece, and can usually convert it by trading down.
Being up the exchange means you hold a rook while the opponent holds a bishop or knight in its place, a material edge of about two points that is often decisive once lines open and the rook finds targets.
A piece exchange is a trade in which each side gives up a piece of roughly equal value, usually by capture and recapture, changing the balance of attackers, defenders, space and structure on the board.
A material imbalance arises when the two sides own different kinds of material, such as a rook against two minor pieces or a queen against rook and bishop, so that simple point totals miss the real strengths of each army.
The bishop pair is the advantage of owning both a light-squared and a dark-squared bishop while the opponent does not, a long-range asset that grows stronger as the position opens up.
Guides that go further
What to decide first, the questions to ask, what a first lesson should show and the red flags to avoid.
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