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Winning blow: queen to g3 (h3)

Shuffle Rating 920Theme: Chess960 twist: use the unusual starting setup of the pieces.
White to move — find the best continuation

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The tactical motive

Chess960 twist: use the unusual starting setup of the pieces.

Winning tactic: there is a move that gains a decisive advantage — find it.

Difficulty 920 ShuffleRating — for beginners taking their first steps in Chess960 tactics.

White to move — find the best continuation

How to recognize this tactic

In Chess960 the pieces start on unfamiliar squares, so tactics appear earlier and from unusual angles. Do not trust classical patterns — read the actual lines of the bishops, the rooks and the queen from where they really stand in this position.

This position hides a concrete tactic that wins material or mates. Start with the most forcing candidate moves — checks, captures and threats — and calculate each to a clear end before choosing; the winning line is usually the one the opponent cannot meet.

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 h2, queen h3, rook h1, pawn a2 d2 f2 g2 b3 c4 f4.

Black: king g7, rook b1 d8, bishop a8 b8, pawn b5 c5 f5 d6 f6 a7 f7.

10 white and 12 black pieces are on the board; the puzzle position arises after move 18.

The position in numbers

Black are ahead by 2 points of material (21 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 h2, the black king on g7.

It is White to move on move 18, with 28 legal replies to weigh — only the line that keeps the advantage solves the puzzle.

White keeps 7 pawns, Black 7. Files fully open (no pawns of either colour): e, h — natural highways for the rooks and queen.

Black hold the bishop pair, an edge in open lines. The White king has 1 empty squares to step to right now — the fewer they are, the closer a mating net.

Solution & explanation

Main line

18. Qg3+ Kf8 19. Rxb1

Why it works

  • Great move! queen to g3 keeps the pressure (+4.0).
  • Well found: rook to b1 (+4.7).
  • You win a piece — the rook.
  • If instead Kf8, then Rxb1 and you win the rook.

Move by move

  • 18. Qg3+ — queen to g3 with check
  • Kf8 — king to f8
  • 19. Rxb1 — rook to b1 (capture)

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.

About this position

These pieces come from starting position #384.

SP-384 · RampartGuard — King on the wing (b/g) with both knights on inner files.

The king starts on g1, the rooks on d1 and h1, the queen on c1.

The king already stands on its castled square, so castling short moves only the rook, from h1 to f1.

A bishop starts in the corner on a1: it has a single diagonal, which the b-pawn unlocks, running out to h8.

One second-rank pawn starts with no defender at all: e2.

The setup belongs to the RampartGuard family; read right to left it becomes position 767.

The engine's main line opens with c4.

Morozov Balance Index: 69 of 100 — class B — balanced. Engine evaluation of the starting position: +21 centipawns for White (depth 44, 400 000 000 nodes).

Explore position #384

Provenance

Mined from the project's engine self-play games.

Pack 004 · SP-384

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