Chess Puzzle #GYzMe — Advanced, Black to move, endgame

Position

White: king g4; rook e4; pawns a4/h5. Black: king d6; rook b4; pawns a5/b7. Material is balanced. Black to move.

Solution (4 moves)

1. Opponent setup: Rxb4 — rook e4→b4, captures rook. Now Black to move.
2. Best move: axb4 — pawn a5→b4, captures rook. Opponent replies h6 (pawn h5→h6).
3. Best move: b3 — pawn b4→b3. Opponent replies h7 (pawn h6→h7).
4. Best move: b2 — pawn b3→b2. Opponent replies h8=Q (pawn h7→h8, promotes to queen).
5. Best move: b1=Q — pawn b2→b1, promotes to queen.

Tactical themes

advanced pawn, endgame, equality, promotion, very long. The key move axb4 wins material.

Position data

FEN: 8/1p6/3k4/p6P/Pr2R1K1/8/8/8 w - - 1 47

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