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Deflection: rook to b4

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Shuffle Rating 1822Theme: Deflection: force the defender to abandon its post.
Black to move — find the best continuation

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The tactical motive

Deflection: force the defender to abandon its post.

Difficulty 1822 ShuffleRating — for advanced tacticians.

Black to move — find the best continuation

How to recognize this tactic

Deflection drags a defender away from its duty. Identify the enemy piece that guards a key square or mate, then force it to move — with a check, a capture or a threat it must answer — and strike where it no longer defends.

General method: before you move, list the forcing candidates — every check, every capture, every direct threat — and calculate those first. The solution to a tactic is almost always among them.

Position on the board

White: king f4, rook a4, pawn g4 e5 f6.

Black: king h4, rook b2, pawn a2 e6 f7.

5 white and 5 black pieces are on the board; the puzzle position arises after move 57.

The position in numbers

Material is level — 8 points of pieces on each side (pawn = 1, knight and bishop = 3, rook = 5, queen = 9).

The white king stands on f4, the black king on h4.

It is Black to move on move 57, with 18 legal replies to weigh — only the line that keeps the advantage solves the puzzle.

White keeps 3 pawns, Black 3. Files fully open (no pawns of either colour): b, c, d, h — natural highways for the rooks and queen. Half-open for Black: g.

The Black king has 1 empty squares to step to right now — the fewer they are, the closer a mating net.

Solution & explanation

Main line

57... Rb4+ 58. Rxb4 a1=Q

Why it works

  • Great move! rook to b4 keeps the pressure (+5.5).
  • Well found: pawn to a1 (+6.0).
  • You win decisive material (+6.0).
  • If instead Rxb4, then a1=Q and you win the pawn.

Move by move

  • 57… Rb4+ — rook to b4 with check
  • 58. Rxb4 — rook to b4 (capture)
  • a1=Q — pawn to a1

Types in this puzzle

Promotion

The pawn reaches the last rank and becomes a queen — decisively.

Promotion turns a pawn on the last rank into a queen and rewrites the evaluation on the spot. In tactics the passer rarely walks in for free — usually a sacrifice clears its path. Count the tempi: how many moves does the pawn need, and can the defender stop it in time? And watch the promotion square itself — it must be out of enemy reach or won by force in your combination.

Passed pawn

Nothing can stop the passer — escort it to the last rank.

A passed pawn has no enemy pawns in front of it or on the neighboring files: only pieces can stop it. Check who can blockade the pawn or catch it with the king — if nobody can, the pawn is worth a whole piece. Push the passer with your pieces supporting it, and put your rook behind it. The beginner's mistake is shoving the pawn forward unprotected, straight into a capture.

Rook endgame

The most common endgame — activity decides everything.

The rook endgame is the most common of all: rooks and pawns on the board. Its first law is activity — a rook behind a passed pawn beats a rook passively babysitting one. The sign of a correct plan is that your rook is attacking something, not guarding something. The typical error is locking your rook into defense: it is often better to give up a pawn and keep your rook and king active.

Provenance

Derived from the Lichess puzzle database (CC0).

Verified by Stockfish at depth 20+.

Solution forcedness confirmed (verified).

Pack 013

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