Every Move Has a Price

Compare candidate moves by asking what each one improves, what it leaves behind, and whether the opponent can use the concession.

"It attacks the knight" is the kind of sentence that gets a move played too quickly. It may be true. It says nothing about the square the piece abandoned, the defender it stopped being, or the reply it invited.

Before choosing a candidate, give it two columns:

The entries do not need to balance. Sometimes the concession is trivial. The point is to notice it before your opponent does.

If a candidate seems to have no price, look again. Check the square it left, the defender that moved and the useful move you postponed.

Start with the square you leave

Moving a piece changes two squares. The new square gets all the attention, but the old one often tells the more important story. A knight can attack the queen and stop defending a pawn on the same move. A bishop can improve its diagonal while giving up control of an entry square.

Pawn moves deserve extra care because the old squares cannot be recovered by that pawn. An advance may gain space while creating a hole or a target. This is why pawn structure survives exchanges and keeps shaping the game long after the original decision has been forgotten.

Even time belongs in the second column. Playing one useful move means postponing another. That matters when the opponent has a forcing plan.

White's earlier h3 created luft and ruled out ...Bg4. With the kings now on opposite wings, the same pawn gives ...g4 a point of contact. If hxg4, Black can recapture and open the h-file. The move did two jobs; the later position decides which one matters. — 1k6/ppp2p2/8/6pp/8/7P/PPP2PP1/6K1 b - - 0 1

Seeing both columns is not prediction. A player who notices that h3 can become a hook has not calculated twenty moves ahead. They simply know which future setup would make the move uncomfortable.

Read their moves the same way

Your opponent's move deserves the same treatment. First ask what it threatens. That is the heart of prophylactic thinking. Then ask what changed behind it. Which defender moved away? Which square can no longer be covered by a pawn? Which file did the capture open for you?

Black's ...g5 gains space and controls f4, but it also gives up f5. White's knight can settle there without ever being challenged by a black pawn. — 6k1/5p1p/8/4p1p1/4P3/4N3/5PPP/6K1 w - - 0 1

This question is particularly useful while defending. Pawn storms leave squares behind them, and attacking pieces leave jobs elsewhere. You still have to answer the immediate threat. Once it is contained, the abandoned square or loose pawn is often the beginning of your counterplay.

Three common misses

  1. Checks and threats get automatic credit. They are easy to see, so they feel conclusive. A check may improve the enemy king, and a one-move threat may leave your worst piece untouched. "It attacks" belongs in the first column; it is not the verdict.
  2. Pawn moves get treated as free. Every advance gives up the squares that pawn used to control, sometimes creating a hole that no later pawn can repair.
  3. Captures get judged by material alone. A capture also decides the recapture, changes the structure and opens lines. Those consequences can matter more than the exchanged piece. See what to trade for the full method.

Choose a price the opponent cannot collect

The aim is not to find a move without a drawback. Chess rarely offers one. Choose a concession that cannot be used, or one compensated by something immediate.

A hole no enemy knight can reach may be mostly theoretical. Doubled pawns that cannot be attacked can be a fair price for an open file. The Najdorf often accepts a hole on d5 because Black gets a firm e5 strongpoint and active play on both flanks. The comparison has to fit the position.

Strong players do not have fewer weaknesses. They have cheaper ones: weaknesses accepted deliberately for activity they can use now.

In a slow game, make the habit small enough to use. After the opponent moves, name its main benefit and one concession. For your own serious candidates, compare what each improves with what it leaves behind. During review, return to the move before the position turned and do the same comparison with one alternative. If your first annotation says only "I wanted to attack," the missing column is usually where the lesson is.

Liubarski-Soultanbeieff, Liege 1928

This old Italian Game miniature is often given a tidy moral: Liubarski played 9.h3, weakened his king and lost. The score is more useful than the slogan.

The move prevented ...Bg4. That was a real benefit. It also put a pawn on h3 for Black's g-pawn to meet. Soultanbeieff kept his own king in the centre and prepared ...g5-g4.

An engine check changes the blame. Stockfish 17.1 at depth 22 still gives White about +0.6 after 9.h3. After 12...Rg8 White is worse, but 13.Nd2 keeps the game going. The pawn grab 13.Bxh6? changes the evaluation from roughly -1 to -4.7 from White's perspective. The original pawn move created the hook; the later decisions allowed Black to use it.

Replay the recorded score from move 9. Do not stop at "h3 was weak." Write both columns, then watch which one the position makes real.

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