Pin: bishop to h6 (f8)
li-00dWqnaming tag (square·N)Opens in the app if installed, otherwise downloads the APK.
The tactical motive
Pin: a piece can't move without exposing something more valuable behind it.
Difficulty 2137 ShuffleRating — expert level — few solve it at first try.
Black to move — find the best continuation
How to recognize this tactic
A pin freezes a piece in front of a more valuable one behind it. Scan the ranks, files and diagonals your bishop, rook or queen controls: if an enemy piece cannot move without exposing its king or queen, it is pinned and can be piled on or bypassed.
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 c1, queen f4, rook d1 f1, pawn c2 h2 a3 g3 b4 e5.
Black: king e8, queen c4, rook c8, bishop f8, pawn c3 b5 a6 e6 f7 h7.
10 white and 10 black pieces are on the board; the puzzle position arises after move 28.
The position in numbers
White are ahead by 2 points of material (25 against 23; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on c1, the black king on e8.
It is Black to move on move 28, with 31 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 6 pawns, Black 6. Files fully open (no pawns of either colour): d — 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
28... Bh6 29. Kb1 Bxf4
Why it works
- Great move! bishop to h6 keeps the pressure (+5.3).
- Well found: bishop to f4 (+5.5).
- You win a piece — the queen.
- If instead Kb1, then Bxf4 and you win the queen.
Move by move
- 28… Bh6 — bishop to h6
- 29. Kb1 — king to b1
- Bxf4 — bishop to f4 (capture)
Types in this puzzle
Absolute pin
A piece is pinned against its king — it cannot legally move.
An absolute pin freezes a piece on the line between its own king and your long-range attacker: moving it is simply illegal. The pattern is three units on one straight line — your bishop, rook or queen, an enemy piece, and the enemy king behind it. A pinned piece neither attacks nor defends anything: treat it as if it were off the board. Pile up on it, ideally with a pawn, because running away is against the rules.
Only move
Everything else loses — find the only move that holds.
An only move is a position where everything loses except one single continuation. You cannot play "by hand" here: run through fundamentally different defenses — run away, block, trade, counterattack — and discard the ones that fail. The hallmark of these puzzles is that the obvious moves lose quickly while the solution often looks strange. First understand exactly what the threat is — then the one saving move reveals itself.
Mate defense
Mate is threatened — parry it and stay on top.
Mate defense: your opponent is one move from mating you — but it is your turn, and that changes everything. Find the defense that kills the mating threat while keeping your advantage: often a check or a counter-threat that leaves no time for the mate. First name the exact square where the mate would land — otherwise you are defending blind. The mistake is playing a "defensive" move that does not actually remove the threat.
Provenance
Derived from the Lichess puzzle database (CC0).
Verified by Stockfish at depth 20+.
Solution forcedness confirmed (verified).
Pack 015
Similar puzzles
In your browser or in the Android app. Nothing to install · Free, no ads