Mate in 2: pin on e1
li-04lQ7Opens in the app if installed, otherwise downloads the APK.
The tactical motive
Mate in 2: the first move creates an unstoppable threat, the second delivers mate.
Pin: a piece can't move without exposing something more valuable behind it.
Difficulty 1503 ShuffleRating — club-player level.
Black to move — find the best continuation
How to recognize this tactic
Mate in two usually opens with a forcing move — a check, a capture or an unstoppable threat — that strips the king of squares or defenders, so the follow-up mate becomes unavoidable. Look for the first move that leaves the opponent only losing replies.
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 h1, rook d3 c6, bishop g2 h6, knight g3, pawn b2 c2 h2 g4.
Black: king g8, rook d8 e8, bishop d5 h8, pawn g6 f7 h7.
10 white and 8 black pieces are on the board; the puzzle position arises after move 28.
The position in numbers
White are ahead by 4 points of material (23 against 19; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on h1, the black king on g8.
It is Black to move on move 28, with 30 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 4 pawns, Black 3. Files fully open (no pawns of either colour): a, d, e — natural highways for the rooks and queen. Half-open for Black: b, c.
The Black king has 0 empty squares to step to right now — the fewer they are, the closer a mating net.
Solution & explanation
Main line
28... Re1+ 29. Nf1 Rxf1#
Why it works
- Great move! rook to e1 keeps the pressure (#1).
- Well found: rook to f1 (#).
- The line ends in a forced mate in 2.
- If instead Nf1, then Rxf1# and it is mate.
Move by move
- 28… Re1+ — rook to e1 with check
- 29. Nf1 — knight to f1
- Rxf1# — rook to f1 (capture) and it is checkmate
Types in this puzzle
Back-rank mate
The king is locked behind its own pawns — a heavy piece strikes the last rank.
The back-rank mate strikes a king locked behind its own unmoved pawns when a rook or queen crashes onto the last rank. The signs: no escape hole in front of the king, and the back rank guarded by a single piece or by nobody at all. Often that lone guard is deflected or traded off first, and only then comes the invasion. In your own games, make luft in time — one pawn move prevents a sudden catastrophe.
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 in 2
A forced checkmate in two moves.
Mate in two: your move, any reply, then the mating blow. Start with the most forcing first moves — checks and sacrifices that shrink the opponent's options to almost nothing. Against every single reply you must have a mate ready, so check them all without exception. The common failure is analyzing the pretty defense and forgetting the boring one.
Provenance
Derived from the Lichess puzzle database (CC0).
Verified by Stockfish at depth 20+.
Solution forcedness confirmed (verified).
Pack 011
Similar puzzles
In your browser or in the Android app. Nothing to install · Free, no ads