Chess Puzzle #JEVqf — Master, Black to move, endgame

Position

White: king g3; rook h6; knight b3; pawns f2/g4/h2. Black: king c4; knight e5; pawns b5/c3/f6. White is ahead by 5 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Na5+ — knight b3→a5, gives check. Now Black to move.
2. Best move: Kb4 — king c4→b4. Opponent replies Rxf6 (rook h6→f6, captures pawn).
3. Best move: Kxa5 — king b4→a5, captures knight. Opponent replies Re6 (rook f6→e6).
4. Best move: c2 — pawn c3→c2. Opponent replies Rxe5 (rook e6→e5, captures knight).
5. Best move: c1=Q — pawn c2→c1, promotes to queen.

Tactical themes

advanced pawn, advantage, defensive move, endgame, promotion, very long. The key move is Kb4.

Position data

FEN: 8/8/5p1R/1p2n3/2k3P1/1Np3K1/5P1P/8 w - - 2 58

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