Winning blow: rook to g8 (g5·4)
c9-25542naming tag (square·N)Opens in the app if installed, otherwise downloads the APK.
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 1390 ShuffleRating — club-player level.
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 d1, queen f8, rook g5, bishop d2 d5, pawn b3 e3 h4.
Black: king c7, queen a2, rook d6, bishop b8, knight b5, pawn e5 a6 d7.
8 white and 8 black pieces are on the board; the puzzle position arises after move 24.
The position in numbers
Material is level — 23 points of pieces on each side (pawn = 1, knight and bishop = 3, rook = 5, queen = 9).
The white king stands on d1, the black king on c7.
It is White to move on move 24, with 49 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 3 pawns, Black 3. Files fully open (no pawns of either colour): c, f, g — natural highways for the rooks and queen. Half-open for White: a, d.
White hold the bishop pair, an edge in open lines. 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
24. Rg8 Nc3+ 25. Ke1 Qa1+ 26. Kf2 Rf6+ 27. Qxf6
Why it works
- Great move! rook to g8 keeps the pressure (+5.8).
- Well found: king to e1 (+6.0).
- Strong! king to f2 is the sharp choice (+6.4).
- Great move! queen to f6 keeps the pressure (+7.2).
- You win a piece — the rook.
- If instead Nc3+, then Ke1 and you stay on top.
Move by move
- 24. Rg8 — rook to g8
- Nc3+ — knight to c3 with check
- 25. Ke1 — king to e1
- Qa1+ — queen to a1 with check
- 26. Kf2 — king to f2
- Rf6+ — rook to f6 with check
- 27. Qxf6 — queen to f6 (capture)
Types in this puzzle
Quiet move
No check, no capture — yet this modest move decides the game.
A quiet move gives no check and takes nothing — yet it decides the game by creating an unstoppable threat or stealing the king's last square. This is the hardest class of moves: the eye hunts for loud blows while a modest shift does the winning. The clue: every forcing try runs into a defense, so seek the move that strengthens the threat or takes squares away. Train yourself to ask: what if I neither capture nor check, but quietly improve?
About this position
These pieces come from starting position #816.
SP-816 · ThroneScout — King on a central file (d/e) with a knight starting on the rim (a/h).
The king starts on d1, the rooks on c1 and g1, the queen on f1.
Castling long simply swaps the two pieces: the king on d1 and the rook on c1 trade places.
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: h2.
The setup belongs to the ThroneScout family; read right to left it becomes position 143.
The engine's main line opens with c4.
Morozov Balance Index: 65 of 100 — class B — balanced. Engine evaluation of the starting position: +22 centipawns for White (depth 48, 400 000 000 nodes).
Explore position #816Provenance
Mined from the project's engine self-play games.
Pack 010 · SP-816
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