Quick answer
Chess Repertoire Definition is a notation skill: the legal-move test. Work from the first evidence position for Chess Repertoire Definition, and begin by testing Kg8.
Begin from Kg8 in 5k2/8/8/8/8/8/4P3/2K5 b - - 3 2. List the fields needed to reconstruct the board and distinguish a position snapshot from a complete game record. The evidence answer is: Chess Repertoire Definition: identify checks, captures, pins and king safety before accepting a move as legal. Candidate line: Kg8.
In the Chess Repertoire Definition example, notice: side Black; pieces Black king f8, White pawn e2, White king c1; legal first moves Kg8, Kg7, Kf7, Ke7, Ke8. Do not export this inventory beyond the present example; it is a local observation, not a doctrine.
What the record contains
The first evidence board tests the legal-move test; the second board tests the legal-move test. For the pair of examples, install A from direct FEN setup and install B from direct FEN setup. For glossary entries nearby, open the Chess Wiki plus the Notation And Tools hub. Then compare Notation with Opening Transposition, Principal Variation, Chess Engine Centipawns around SAN versus long algebraic form.
The two inventories make the distinction concrete. A contains side Black; pieces Black king f8, White pawn e2, White king c1; legal first moves Kg8, Kg7, Kf7, Ke7, Ke8; B contains side Black; pieces Black king f8, White pawn e2, White king c1; legal first moves Kg8, Kg7, Kf7, Ke7, Ke8. Compare the side to move before comparing the labels in the context of the descriptive limit of an ECO code.
Topic dossier for this page and board pair r1:5k2 | r2:8 | r3:8 | r4:8 | r5:8 | r6:8 | r7:4P3 | r8:2K5 / r1:5k2 | r2:8 | r3:8 | r4:8 | r5:8 | r6:8 | r7:4P3 | r8:2K5: start with SAN versus long algebraic form; then test the descriptive limit of an ECO code; keep castling and en-passant state separate from software interoperability; use the field boundary in the record as the transfer check; and reserve the disambiguation character for the exception.
Reconstruction test
On the first board, calculate Kg8 after Kg8 and write down the opponent's best reply around SAN versus long algebraic form. On the second board, calculate Kg8 after Kg8 and check the descriptive limit of an ECO code. Use the notation to preserve state, not to infer history that the record does not contain. In this case the useful condition is the disambiguation character.
Key claim: Chess Repertoire Definition is illustrated here by the legal-move test; the first concrete test is Kg8. The board anchor is 5k2/8/8/8/8/8/4P3/2K5; 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 read chess repertoire definition accurately and reconstruct the position or game record it describes?”, compare the recorded setup with Kg8 and the opponent's reply. The decision is useful only when the stated condition survives that concrete test on board 5k2/8/8/8/8/8/4P3/2K5. The evidence records The position tests the stated rule or record field; verify the relevant source when a procedural decision matters and the second board signature r1:5k2 | r2:8 | r3:8 | r4:8 | r5:8 | r6:8 | r7:4P3 | r8:2K5. The false-positive test is whether castling and en-passant state appears without software interoperability, so the conclusion is useful only when the stated condition survives that concrete test.
Evidence positions
example-1: the legal-move test
Show answer
Chess Repertoire Definition: identify checks, captures, pins and king safety before accepting a move as legal. Candidate line: Kg8.
Why this position is here: Chess Repertoire Definition is represented by the legal-move test. This is a direct FEN setup with board anchor 5k2/8/8/8/8/8/4P3/2K5; no opening history is inferred from the diagram.
FEN: 5k2/8/8/8/8/8/4P3/2K5 b - - 3 2
Question: What is the first concrete decision in this chess repertoire definition position?
Answer cue: Chess Repertoire Definition: identify checks, captures, pins and king safety before accepting a move as legal. Candidate line: Kg8. The first candidate to test is Kg8. Replay Kg8 on board anchor 5k2/8/8/8/8/8/4P3/2K5 and write down what changes after it.
Evidence boundary: The position tests the stated rule or record field; verify the relevant source when a procedural decision matters.
Reading the record
Read the first example (id example-1) as a complete record: continuation Kg8, source fide-laws. This is a direct FEN setup with board anchor 5k2/8/8/8/8/8/4P3/2K5; no opening history is inferred from the diagram. If A does not expose the legal-move test, correct the evidence before relying on the prose.
Read the second example (id example-1) separately: continuation Kg8, source fide-laws. Its feature is the legal-move test; inventory side Black; pieces Black king f8, White pawn e2, White king c1; legal first moves Kg8, Kg7, Kf7, Ke7, Ke8. Compare what changes between Kg8 and Kg8.
Missing information
The main mistake to avoid with Chess Repertoire Definition is treating a compact notation field as if it encoded history or context that it does not actually contain. In A, the missing condition must be located in r1:5k2 | r2:8 | r3:8 | r4:8 | r5:8 | r6:8 | r7:4P3 | r8:2K5 after Kg8; in B, test it against r1:5k2 | r2:8 | r3:8 | r4:8 | r5:8 | r6:8 | r7:4P3 | r8:2K5 after Kg8.
For Chess Repertoire Definition, the first board's evidence boundary (after Kg8) is The position tests the stated rule or record field; verify the relevant source when a procedural decision matters. The second board's evidence boundary for Chess Repertoire Definition is The position tests the stated rule or record field; verify the relevant source when a procedural decision matters. If a trusted source or careful calculation changes the conclusion around the field boundary in the record, update both the evidence record and this article.
Practice protocol
decode one record at a time, reconstruct the board, and deliberately test one malformed or incomplete input. Start with A's side to move and r1:5k2 | r2:8 | r3:8 | r4:8 | r5:8 | r6:8 | r7:4P3 | r8:2K5; record two candidates, the reply to Kg8 and the correction. Repeat with B's side to move and r1:5k2 | r2:8 | r3:8 | r4:8 | r5:8 | r6:8 | r7:4P3 | r8:2K5; the changed board tests transfer rather than diagram memory.
After the drill, compare your notes with Opening Transposition, Principal Variation, Chess Engine Centipawns through software interoperability. Keep A's rejected alternative beside B's chosen line Kg8; this shows whether the conclusion survived a new board signature.
Sources and scope
Sources for Chess Repertoire Definition: Portable Game Notation Specification, 1chess.online editorial scope, FIDE Laws of Chess. Source ids are pgn-specification, 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 r1:5k2 | r2:8 | r3:8 | r4:8 | r5:8 | r6:8 | r7:4P3 | r8:2K5 / r1:5k2 | r2:8 | r3:8 | r4:8 | r5:8 | r6:8 | r7:4P3 | r8:2K5: this page does not claim that Kg8 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 castling and en-passant state.