Chess Puzzle #KoCIx — Intermediate, Black to move, endgame

Position

White: king h4; rook b4; pawn g4. Black: king d5; rook d3; pawn b3. Material is balanced. Black to move.

Solution (6 moves)

1. Opponent setup: g5 — pawn g4→g5. Now Black to move.
2. Best move: Rd4+ — rook d3→d4, gives check. Opponent replies Rxd4+ (rook b4→d4, captures rook, gives check).
3. Best move: Kxd4 — king d5→d4, captures rook. Opponent replies g6 (pawn g5→g6).
4. Best move: b2 — pawn b3→b2. Opponent replies g7 (pawn g6→g7).
5. Best move: b1=Q — pawn b2→b1, promotes to queen. Opponent replies g8=Q (pawn g7→g8, promotes to queen).
6. Best move: Qh1+ — queen b1→h1, gives check. Opponent replies Kg3 (king h4→g3).
7. Best move: Qg1+ — queen h1→g1, gives check.

Tactical themes

advanced pawn, crushing, endgame, promotion, rook endgame, very long. The key move is Rd4+.

Position data

FEN: 8/8/8/3k4/1R4PK/1p1r4/8/8 w - - 1 44

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