Quick answer
Attraction is a tactical idea: two aligned attackers on the king file. Work from the first evidence position for Attraction, and begin by testing Kd7.
Begin from Kd7 in 4k3/4p3/4R3/8/8/5Q2/7K/8 b - - 5 3. Start with the forcing geometry: checks, captures, threats, defenders and flight squares around the target. The evidence answer is: Attraction: preserve the alignment and calculate the defensive interposition before trading the front piece. Candidate line: Kd7.
In the Attraction example, notice: side Black; pieces Black king e8, Black pawn e7, White rook e6, White queen f3, White king h2; legal first moves Kd7, Kd8. This material report is evidence for the board shown here, not a checklist for every encounter with the idea.
The tactical trigger
The first evidence board tests two aligned attackers on the king file; the second board tests two aligned attackers on the king file. When a recorded line exists, board A starts from direct FEN setup while board B starts from direct FEN setup. Start from the Chess Wiki, then the Tactics hub, for nearby labels. Then compare Candidate Moves with Overloaded Piece, Double Attack, Triple Attack around a deflection from the critical square.
The two inventories make the distinction concrete. A contains side Black; pieces Black king e8, Black pawn e7, White rook e6, White queen f3, White king h2; legal first moves Kd7, Kd8; B contains side White; pieces Black king c7, Black pawn e7, White rook e4, White queen e3, White king h2; legal first moves Re5, Re6, Rxe7+, Rf4, Rg4, Rh4, Rd4, Rc4+. Compare the side to move before comparing the labels in the context of a counter-check that changes the calculation.
Topic dossier for this page and board pair r1:4k3 | r2:4p3 | r3:4R3 | r4:8 | r5:8 | r6:5Q2 | r7:7K | r8:8 / r1:8 | r2:2k1p3 | r3:8 | r4:8 | r5:4R3 | r6:4Q3 | r7:7K | r8:8: start with a deflection from the critical square; then test a counter-check that changes the calculation; keep the exchange that removes a guard separate from the mating net's boundary; use the only defensive interposition as the transfer check; and reserve the overloaded attacker for the exception.
Calculation order
On the first board, calculate Kd7 after Kd7 and write down the opponent's best reply around a deflection from the critical square. On the second board, calculate Rxe7+ after Rxe7+ and check a counter-check that changes the calculation. Calculate the most forcing move first, then test the opponent's best capture, interposition or counter-check before naming the motif. In this case the useful condition is the overloaded attacker.
Key claim: Attraction is illustrated here by two aligned attackers on the king file; the first concrete test is Kd7. The board anchor is 4k3/4p3/4R3/8/8/5Q2/7K/8; the example is intentionally narrower than the topic label and should not be generalised without checking the surrounding position..
Practical boundary: To answer “How can a player recognize attraction, calculate the winning idea, and test the defender's best resource?”, compare the recorded setup with Rxe7+ and the opponent's reply. The decision is useful only when the stated condition survives that concrete test on board 8/2k1p3/8/8/4R3/4Q3/7K/8. The evidence records Illustrative evidence for the stated mechanism; it is not a claim that the candidate move is forced or best in every position and the second board signature r1:8 | r2:2k1p3 | r3:8 | r4:8 | r5:4R3 | r6:4Q3 | r7:7K | r8:8. The false-positive test is whether the exchange that removes a guard appears without the mating net's boundary, so the conclusion is useful only when the stated condition survives that concrete test.
Evidence positions
example-1: two aligned attackers on the king file
Show answer
Attraction: preserve the alignment and calculate the defensive interposition before trading the front piece. Candidate line: Kd7.
Why this position is here: Attraction is represented by two aligned attackers on the king file. This is a direct FEN setup with board anchor 4k3/4p3/4R3/8/8/5Q2/7K/8; no opening history is inferred from the diagram.
FEN: 4k3/4p3/4R3/8/8/5Q2/7K/8 b - - 5 3
Question: What is the first concrete decision in this attraction position?
Answer cue: Attraction: preserve the alignment and calculate the defensive interposition before trading the front piece. Candidate line: Kd7. The first candidate to test is Kd7. Replay Kd7 on board anchor 4k3/4p3/4R3/8/8/5Q2/7K/8 and write down what changes after it.
Evidence boundary: Illustrative evidence for the stated mechanism; it is not a claim that the candidate move is forced or best in every position.
example-2: two aligned attackers on the king file
Show answer
Attraction: preserve the alignment and calculate the defensive interposition before trading the front piece. Candidate line: Rxe7+.
Why this position is here: Attraction is represented by two aligned attackers on the king file. This is a direct FEN setup with board anchor 8/2k1p3/8/8/4R3/4Q3/7K/8; no opening history is inferred from the diagram.
FEN: 8/2k1p3/8/8/4R3/4Q3/7K/8 w - - 6 4
Question: What is the first concrete decision in this attraction position?
Answer cue: Attraction: preserve the alignment and calculate the defensive interposition before trading the front piece. Candidate line: Rxe7+. The first candidate to test is Rxe7+. Replay Rxe7+ on board anchor 8/2k1p3/8/8/4R3/4Q3/7K/8 and write down what changes after it.
Evidence boundary: Illustrative evidence for the stated mechanism; it is not a claim that the candidate move is forced or best in every position.
example-3: two aligned attackers on the king file
Show answer
Attraction: preserve the alignment and calculate the defensive interposition before trading the front piece. Candidate line: Re4.
Why this position is here: Attraction is represented by two aligned attackers on the king file. This is a direct FEN setup with board anchor 4k3/8/4p3/8/8/4R3/8/4Q1K1; no opening history is inferred from the diagram.
FEN: 4k3/8/4p3/8/8/4R3/8/4Q1K1 w - - 0 2
Question: What is the first concrete decision in this attraction position?
Answer cue: Attraction: preserve the alignment and calculate the defensive interposition before trading the front piece. Candidate line: Re4. The first candidate to test is Re4. Replay Re4 on board anchor 4k3/8/4p3/8/8/4R3/8/4Q1K1 and write down what changes after it.
Evidence boundary: Illustrative evidence for the stated mechanism; it is not a claim that the candidate move is forced or best in every position.
Reading the line
Read the first example (id example-1) as a complete record: continuation Kd7, source fide-laws. This is a direct FEN setup with board anchor 4k3/4p3/4R3/8/8/5Q2/7K/8; no opening history is inferred from the diagram. If A does not expose two aligned attackers on the king file, correct the evidence before relying on the prose.
Read the second example (id example-2) separately: continuation Rxe7+, source fide-laws. Its feature is two aligned attackers on the king file; inventory side White; pieces Black king c7, Black pawn e7, White rook e4, White queen e3, White king h2; legal first moves Re5, Re6, Rxe7+, Rf4, Rg4, Rh4, Rd4, Rc4+. Compare what changes between Kd7 and Rxe7+.
The defensive resource
The main mistake to avoid with Attraction is spotting a familiar motif but failing to test the defender's strongest legal resource. In A, the missing condition must be located in r1:4k3 | r2:4p3 | r3:4R3 | r4:8 | r5:8 | r6:5Q2 | r7:7K | r8:8 after Kd7; in B, test it against r1:8 | r2:2k1p3 | r3:8 | r4:8 | r5:4R3 | r6:4Q3 | r7:7K | r8:8 after Rxe7+.
For Attraction, the first board's evidence boundary (after Kd7) is Illustrative evidence for the stated mechanism; it is not a claim that the candidate move is forced or best in every position. The second board's evidence boundary for Attraction is Illustrative evidence for the stated mechanism; it is not a claim that the candidate move is forced or best in every position. If a trusted source or careful calculation changes the conclusion around the only defensive interposition, update both the evidence record and this article.
Practice from a real game
cover the answer, list checks and captures, and record the defender or escape square that decides whether the idea works. Start with A's side to move and r1:4k3 | r2:4p3 | r3:4R3 | r4:8 | r5:8 | r6:5Q2 | r7:7K | r8:8; record two candidates, the reply to Kd7 and the correction. Repeat with B's side to move and r1:8 | r2:2k1p3 | r3:8 | r4:8 | r5:4R3 | r6:4Q3 | r7:7K | r8:8; the changed board tests transfer rather than diagram memory.
After the drill, compare your notes with Overloaded Piece, Double Attack, Triple Attack through the mating net's boundary. Keep A's rejected alternative beside B's chosen line Rxe7+; this shows whether the conclusion survived a new board signature.
Sources and scope
Sources for Attraction: 1chess.online editorial scope, FIDE Laws of Chess. Source ids are original-analysis, fide-laws. Primary evidence hook: fide-laws. Comparisons and practice notes are editorial. Evidence revision: 2026-08-remediation-r2.
Scope note for board pair r1:4k3 | r2:4p3 | r3:4R3 | r4:8 | r5:8 | r6:5Q2 | r7:7K | r8:8 / r1:8 | r2:2k1p3 | r3:8 | r4:8 | r5:4R3 | r6:4Q3 | r7:7K | r8:8: this page does not claim that Kd7 is an engine principal variation, that an exact endgame result is verified when the evidence says it is not, or that a tool output replaces human calculation. The conclusion is limited to the recorded boundary and the exception the exchange that removes a guard.