Win the hanging king on g2 (g1)
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The tactical motive
Hanging piece: your opponent left a piece undefended — take it.
Difficulty 2107 ShuffleRating — expert level — few solve it at first try.
White to move — find the best continuation
How to recognize this tactic
A hanging piece is one that is attacked and not defended, or defended too few times. Count attackers against defenders on each enemy unit; where attackers win, take it — often with an in-between move or a check to gain the extra tempo.
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 g1, queen d2, rook a1 e1, bishop c2, knight a3 f3, pawn a2 b2 f2 h2 c3 e4 d5.
Black: king g8, queen f6, rook a7 f8, bishop c8, knight g2 a5, pawn b5 e5 a6 d6 h6 c7 f7 g7.
14 white and 15 black pieces are on the board; the puzzle position arises after move 17.
The position in numbers
Black are ahead by 1 points of material (35 against 36; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on g1, the black king on g8.
It is White to move on move 17, with 38 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 7 pawns, Black 8. No file is fully open, so the heavy pieces have to be pried in. Half-open for White: g.
The White king has 3 empty squares to step to right now — the fewer they are, the closer a mating net.
Solution & explanation
Main line
17. Kxg2 Bh3+ 18. Kg3
Why it works
- Great move! king to g2 keeps the pressure (+2.6).
- Well found: king to g3 (+2.7).
- You win a piece — the knight.
- If instead Bh3+, then Kg3 and you win the knight.
Move by move
- 17. Kxg2 — king to g2 (capture)
- Bh3+ — bishop to h3 with check
- 18. Kg3 — king to g3
Types in this puzzle
Winning blow
Find the strike that wins material by force.
A winning blow is a forced material gain that does not fit a single textbook motif. The general tactical recipe applies: spot loose pieces, an awkwardly placed king, overloaded lines. Go through the forcing moves in order of violence — checks, captures, threats — because most combinations start with one of them. Do not judge by feel: calculate the concrete line until the outcome is beyond doubt.
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.
Counter-strike
Don't defend — answer the threat with a bigger one.
The counter-strike: instead of defending against the threat, you answer with a bigger threat of your own. While your opponent grabs a pawn, you deliver mate — the arithmetic favors you. Look for a counter when direct defenses fail: do you have a check, an attack on the queen, a mating threat? The beginner's error is meeting every threat with a reflexive defense without checking the counterattacking resources first.
Provenance
Derived from the Lichess puzzle database (CC0).
Pack 015
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