Quick answer
Postgame Review Method is a training method: space, initiative and concrete restraint. Work from the first evidence position for Postgame Review Method, and begin by testing c4.
Begin from c4 in rnbqk1r1/pppp1ppp/5n2/6N1/1P1pP3/b7/P1P2PPP/RNBQKB1R w KQq - 1 6. Define the observable decision, the time budget, the feedback loop and the next-session test before adding another exercise. The evidence answer is: Postgame Review Method: separate a lasting advantage from a temporary lead in activity. Candidate line: c4.
In the Postgame Review Method example, notice: side White; pieces Black rook a8, Black knight b8, Black bishop c8, Black queen d8, Black king e8, Black rook g8, Black pawn a7, Black pawn b7, Black pawn c7, Black pawn d7, Black pawn f7, Black pawn g7, Black pawn h7, Black knight f6, White knight g5, White pawn b4, Black pawn d4, White pawn e4, Black bishop a3, White pawn a2, White pawn c2, White pawn f2, White pawn g2, White pawn h2, White rook a1, White knight b1, White bishop c1, White queen d1, White king e1, White bishop f1, White rook h1; legal first moves Ne6, Nxf7, Nxh7, Nh3, Nf3, b5, e5, c3. Treat this piece list as local to the diagram above; it is not a universal map for every similar position.
Skill being trained
The first evidence board tests space, initiative and concrete restraint; the second board tests space, initiative and concrete restraint. If both boards list a construction string, read A as e4 e5 d4 exd4 Nf3 Nf6 Ng5 Ba3 b4 Rg8 and B as e4 e5 d4 exd4 Nf3 c6 Rg1 Bd6 Be2. Look up neighbouring ideas via the Chess Wiki and the Training hub. Then compare Analysis Checklist with Practical Thought Process, Using An Engine After A Game, Opening Repertoire Study around the critical moment selected for study.
The two inventories make the distinction concrete. A contains side White; pieces Black rook a8, Black knight b8, Black bishop c8, Black queen d8, Black king e8, Black rook g8, Black pawn a7, Black pawn b7, Black pawn c7, Black pawn d7, Black pawn f7, Black pawn g7, Black pawn h7, Black knight f6, White knight g5, White pawn b4, Black pawn d4, White pawn e4, Black bishop a3, White pawn a2, White pawn c2, White pawn f2, White pawn g2, White pawn h2, White rook a1, White knight b1, White bishop c1, White queen d1, White king e1, White bishop f1, White rook h1; legal first moves Ne6, Nxf7, Nxh7, Nh3, Nf3, b5, e5, c3; B contains side Black; pieces Black rook a8, Black knight b8, Black bishop c8, Black queen d8, Black king e8, Black knight g8, Black rook h8, Black pawn a7, Black pawn b7, Black pawn d7, Black pawn f7, Black pawn g7, Black pawn h7, Black pawn c6, Black bishop d6, Black pawn d4, White pawn e4, White knight f3, White pawn a2, White pawn b2, White pawn c2, White bishop e2, White pawn f2, White pawn g2, White pawn h2, White rook a1, White knight b1, White bishop c1, White queen d1, White king e1, White rook g1; legal first moves Na6, Qe7, Qf6, Qg5, Qh4, Qc7, Qb6, Qa5+. Compare the side to move before comparing the labels in the context of the constraint of a tournament clock.
Topic dossier for this page and board pair r1:rnbqk1r1 | r2:pppp1ppp | r3:5n2 | r4:6N1 | r5:1P1pP3 | r6:b7 | r7:P1P2PPP | r8:RNBQKB1R / r1:rnbqk1nr | r2:pp1p1ppp | r3:2pb4 | r4:8 | r5:3pP3 | r6:5N2 | r7:PPP1BPPP | r8:RNBQK1R1: start with the critical moment selected for study; then test the constraint of a tournament clock; keep the feedback loop after an incorrect answer separate from the next-session experiment; use a position chosen for transfer as the transfer check; and reserve the question asked before the move for the exception.
Session design
On the first board, calculate c4 after c4 and write down the opponent's best reply around the critical moment selected for study. On the second board, calculate Na6 after Na6 and check the constraint of a tournament clock. Treat the position as a diagnostic prompt: the useful output is the player's reasoning and correction, not only the move that wins material. In this case the useful condition is the question asked before the move.
Key claim: Postgame Review Method is illustrated here by space, initiative and concrete restraint; the first concrete test is c4. The board anchor is rnbqk1r1/pppp1ppp/5n2/6N1/1P1pP3/b7/P1P2PPP/RNBQKB1R; 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 train postgame review method with a repeatable drill, feedback loop, and transfer test?”, compare the recorded setup with Na6 and the opponent's reply. The decision is useful only when the stated condition survives that concrete test on board rnbqk1nr/pp1p1ppp/2pb4/8/3pP3/5N2/PPP1BPPP/RNBQK1R1. 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:rnbqk1nr | r2:pp1p1ppp | r3:2pb4 | r4:8 | r5:3pP3 | r6:5N2 | r7:PPP1BPPP | r8:RNBQK1R1. The false-positive test is whether the feedback loop after an incorrect answer appears without the next-session experiment, so the conclusion is useful only when the stated condition survives that concrete test.
Evidence positions
example-1: space, initiative and concrete restraint
Show answer
Postgame Review Method: separate a lasting advantage from a temporary lead in activity. Candidate line: c4.
Why this position is here: Postgame Review Method is represented by space, initiative and concrete restraint. The reproducible setup is e4 e5 d4 exd4 Nf3 Nf6 Ng5 Ba3 b4 Rg8 with board anchor rnbqk1r1/pppp1ppp/5n2/6N1/1P1pP3/b7/P1P2PPP/RNBQKB1R; replay it before treating the board as an abstract illustration.
FEN: rnbqk1r1/pppp1ppp/5n2/6N1/1P1pP3/b7/P1P2PPP/RNBQKB1R w KQq - 1 6
Question: What is the first concrete decision in this postgame review method position?
Answer cue: Postgame Review Method: separate a lasting advantage from a temporary lead in activity. Candidate line: c4. The first candidate to test is c4. Replay c4 on board anchor rnbqk1r1/pppp1ppp/5n2/6N1/1P1pP3/b7/P1P2PPP/RNBQKB1R 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: space, initiative and concrete restraint
Show answer
Postgame Review Method: separate a lasting advantage from a temporary lead in activity. Candidate line: Na6.
Why this position is here: Postgame Review Method is represented by space, initiative and concrete restraint. The reproducible setup is e4 e5 d4 exd4 Nf3 c6 Rg1 Bd6 Be2 with board anchor rnbqk1nr/pp1p1ppp/2pb4/8/3pP3/5N2/PPP1BPPP/RNBQK1R1; replay it before treating the board as an abstract illustration.
FEN: rnbqk1nr/pp1p1ppp/2pb4/8/3pP3/5N2/PPP1BPPP/RNBQK1R1 b Qkq - 3 5
Question: What is the first concrete decision in this postgame review method position?
Answer cue: Postgame Review Method: separate a lasting advantage from a temporary lead in activity. Candidate line: Na6. The first candidate to test is Na6. Replay Na6 on board anchor rnbqk1nr/pp1p1ppp/2pb4/8/3pP3/5N2/PPP1BPPP/RNBQK1R1 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 decision
Read the first example (id example-1) as a complete record: continuation c4, source training-research. The reproducible setup is e4 e5 d4 exd4 Nf3 Nf6 Ng5 Ba3 b4 Rg8 with board anchor rnbqk1r1/pppp1ppp/5n2/6N1/1P1pP3/b7/P1P2PPP/RNBQKB1R; replay it before treating the board as an abstract illustration. If A does not expose space, initiative and concrete restraint, correct the evidence before relying on the prose.
Read the second example (id example-2) separately: continuation Na6, source training-research. Its feature is space, initiative and concrete restraint; inventory side Black; pieces Black rook a8, Black knight b8, Black bishop c8, Black queen d8, Black king e8, Black knight g8, Black rook h8, Black pawn a7, Black pawn b7, Black pawn d7, Black pawn f7, Black pawn g7, Black pawn h7, Black pawn c6, Black bishop d6, Black pawn d4, White pawn e4, White knight f3, White pawn a2, White pawn b2, White pawn c2, White bishop e2, White pawn f2, White pawn g2, White pawn h2, White rook a1, White knight b1, White bishop c1, White queen d1, White king e1, White rook g1; legal first moves Na6, Qe7, Qf6, Qg5, Qh4, Qc7, Qb6, Qa5+. Compare what changes between c4 and Na6.
Failure modes
The main mistake to avoid with Postgame Review Method is collecting exercises without recording the thought process that produced the mistake. In A, the missing condition must be located in r1:rnbqk1r1 | r2:pppp1ppp | r3:5n2 | r4:6N1 | r5:1P1pP3 | r6:b7 | r7:P1P2PPP | r8:RNBQKB1R after c4; in B, test it against r1:rnbqk1nr | r2:pp1p1ppp | r3:2pb4 | r4:8 | r5:3pP3 | r6:5N2 | r7:PPP1BPPP | r8:RNBQK1R1 after Na6.
For Postgame Review Method, the first board's evidence boundary (after c4) 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 Postgame Review Method 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 a position chosen for transfer, update both the evidence record and this article.
Practice protocol
save one decision from a real game, compare it with the strongest alternative, and turn the correction into a repeatable drill. Start with A's side to move and r1:rnbqk1r1 | r2:pppp1ppp | r3:5n2 | r4:6N1 | r5:1P1pP3 | r6:b7 | r7:P1P2PPP | r8:RNBQKB1R; record two candidates, the reply to c4 and the correction. Repeat with B's side to move and r1:rnbqk1nr | r2:pp1p1ppp | r3:2pb4 | r4:8 | r5:3pP3 | r6:5N2 | r7:PPP1BPPP | r8:RNBQK1R1; the changed board tests transfer rather than diagram memory.
After the drill, compare your notes with Practical Thought Process, Using An Engine After A Game, Opening Repertoire Study through the next-session experiment. Keep A's rejected alternative beside B's chosen line Na6; this shows whether the conclusion survived a new board signature.
Sources and scope
Sources for Postgame Review Method: 1chess.online editorial scope, Chessprogramming chess reference. Source ids are original-analysis, training-research. Primary evidence hook: training-research. Comparisons and practice notes are editorial. Evidence revision: 2026-08-remediation-r2.
Scope note for board pair r1:rnbqk1r1 | r2:pppp1ppp | r3:5n2 | r4:6N1 | r5:1P1pP3 | r6:b7 | r7:P1P2PPP | r8:RNBQKB1R / r1:rnbqk1nr | r2:pp1p1ppp | r3:2pb4 | r4:8 | r5:3pP3 | r6:5N2 | r7:PPP1BPPP | r8:RNBQK1R1: this page does not claim that c4 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 feedback loop after an incorrect answer.