Mate in 2: bishop to b5 (d7)
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The tactical motive
Mate in 2: the first move creates an unstoppable threat, the second delivers mate.
Difficulty 1622 ShuffleRating — for advanced tacticians.
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.
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 f1, queen a7, rook f4, bishop g5, pawn a2 c2 e4.
Black: king g8, queen g3, bishop d7, pawn g6 b7 c7 g7.
7 white and 7 black pieces are on the board; the puzzle position arises after move 27.
The position in numbers
White are ahead by 4 points of material (20 against 16; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on f1, the black king on g8.
It is Black to move on move 27, with 31 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 3 pawns, Black 4. Files fully open (no pawns of either colour): d, f, h — natural highways for the rooks and queen. Half-open for Black: a, e.
The Black king has 2 empty squares to step to right now — the fewer they are, the closer a mating net.
Solution & explanation
Main line
27... Bb5+ 28. c4 Bxc4#
Why it works
- Great move! bishop to b5 keeps the pressure (#1).
- Well found: bishop to c4 (#).
- The line ends in a forced mate in 2.
- If instead c4, then Bxc4# and it is mate.
Move by move
- 27… Bb5+ — bishop to b5 with check
- 28. c4 — pawn to c4
- Bxc4# — bishop to c4 (capture) and it is checkmate
Types in this puzzle
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.
Win the pinned piece
The pinned piece cannot run — attack it again and win it.
A pinned piece cannot flee, which means you can win it outright by attacking it one more time. Count attackers against defenders: if you outnumber them, the piece is yours. The best extra attacker is a pawn, since it costs less than anything it might capture. Do not rush the capture — build up the pressure first, then harvest.
Provenance
Derived from the Lichess puzzle database (CC0).
Verified by Stockfish at depth 20+.
Solution forcedness confirmed (verified).
Pack 012
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