Chess Puzzle #1OVAc — Intermediate, Black to move, endgame

Position

White: king e6; rook h7; pawns a3/c3/g6. Black: king f8; rook f3; pawns a4/b5/c4. Material is balanced. Black to move.

Solution (4 moves)

1. Opponent setup: Rf7+ — rook h7→f7, gives check. Now Black to move.
2. Best move: Rxf7 — rook f3→f7, captures rook. Opponent replies gxf7 (pawn g6→f7, captures rook).
3. Best move: b4 — pawn b5→b4. Opponent replies cxb4 (pawn c3→b4, captures pawn).
4. Best move: c3 — pawn c4→c3. Opponent replies b5 (pawn b4→b5).
5. Best move: c2 — pawn c3→c2.

Why this works

Black sacrifices the rook on f7 to eliminate White's most dangerous attacking piece, then pushes the passed c-pawn down the board with forcing efficiency. After 1...Rxf7 2.gxf7, White's g-pawn becomes a rook—but Black's 2...b4 initiates a pawn race where White's captures on b4 and then b5 are mandatory, wasting time. Meanwhile, 3...c3 and 4...c2 advance the c-pawn unstoppably; White cannot both stop it and support the f7 pawn's promotion. The key is that Black's rook sacrifice buys enough tempo—White's king on e6 is too far away to defend both the advancing c-pawn and the f7 pawn. The geometry is decisive: from e6, the king needs at minimum three moves to reach c2, but the pawn reaches c2 in one more Black move.

What to practice

In rook endgames with opposite-side passed pawns, calculate whether a rook sacrifice forces your opponent into a tempo loss by capturing greedily. The pattern here—trading rook for rook, then racing pawns where the opponent's captures consume moves—shows that sometimes the 'most valuable' defender (the rook) is actually a liability. Look for positions where your passed pawn is closer to promotion than your opponent's, and a rook trade removes the only thing stopping you.

Tactical themes

advanced pawn, crushing, endgame, rook endgame, very long. The key move Rxf7 wins material.

Position data

FEN: 5k2/7R/4K1P1/1p6/p1p5/P1P2r2/8/8 w - - 7 54

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