Anastasia's Mate

Anastasia's Mate is a rook-and-knight checkmate against a king standing one square in from the edge. It uses the same two pieces as the Arabian Mate, which targets a king in the corner, but that one-square difference completely changes what each piece has to do. The name comes from the German writer Wilhelm Heinse (1746-1803) and his 1803 novel Anastasia und das Schachspiel, where the mating scene appears.

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Key piece

How often does it show up

Of the 212,300 puzzles in this site's database, 198 (0.1%) carry the Anastasia's mate tag (counted August 2026). The ratings skew low: 48.0% sit below 1200, and two of the 198 are rated 1900 or above.

44.4% also carry the sacrifice tag, against 23.5% for the Opera mate and 6.7% for Morphy's mate. Co-tagging shows which labels land on the same puzzle, not which move comes first in the solution. 51.0% are tagged mate in two, so most of these finish in two moves.

Why it is mate

The king on h7 has five adjacent squares.

• h6 and h8: attacked by the rook on the h-file.
• g6 and g8: attacked by the knight on e7.
• g7: occupied by Black's own pawn.

The other two answers to a check fail as well. Black cannot capture the rook, which sits six squares away on h1, and has no piece that could step onto the h-file in between.

One knight covers two squares

The heart of this pattern is that the e7 knight attacks g6 and g8 at the same time. No rook can do that: g7 sits between the two squares on the g-file, so a rook covering one is cut off from the other. A bishop on f7 could cover both as well, so this is not a knight-only trick. What stands out is that the knight does it from e7, a square that is easy to overlook.

Take the knight away and its role becomes obvious.

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Key square

Black suddenly has two flight squares. The rook governs the h-file and nothing else; it has no say on the g-file at all.

What one pawn changes

The black pawn on g7 belongs to the defender, yet the mate depends on it. Without that pawn the king simply walks out to g7.

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Key square

The weak point of the whole pattern is that g7 lies exactly between the two squares the knight covers. The knight takes two squares, and the defender's own pawn has to fill the gap for the net to close. So Anastasia's Mate works only while the defender's pawn in front of the king is still home. A defender who pushed the g-pawn earlier has already opened g7, the escape square shown in the failed position above.

How the position is built

Nobody parks their king one square from the edge voluntarily; the attacker usually drags it there. In the game position below the white knight has already landed on e7. White throws the queen in with Qxh7+ to pull the king onto h7 (attraction), then finishes with Rh3# down the h-file.

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Start(0/3)

(Source: Lichess puzzle 0SITb, CC0)

The move order matters. The knight settles on e7 first, the queen drags the king to h7, and only then does the rook enter the h-file. The queen sacrifice works precisely because the knight already controls g6 and g8, so the moment the king is pulled onto h7 it has nowhere left to go. Without the knight already there, the sacrifice would only lose the queen.

Defending against it

• Give the king breathing room. Pushing the g-pawn one square opens g7, exactly the escape shown above. It also creates fresh weaknesses around that pawn, so decide based on where the attacker's pieces point.
• Keep the knight out of e7. That square looks far from the king but covers g6 and g8 in one stroke. Control them or trade the knight and the pattern cannot form.
• Do not concede the side file. Oppose the rook before it takes the h-file, or keep a piece that can block it.
• Watch for both pieces together. Once both are in place it is usually too late, so react as soon as the knight and the rook start heading for your flank together.

Versus the Arabian Mate

Shift the king by one square and the knight's job changes entirely. In the Arabian the rook checks from right beside the king, so the king could capture it - which is why the knight must defend the rook. In Anastasia's the rook is far away and safe, so the knight is free to cover two escape squares on its own. The pieces are the same, but the knight is a protector in one pattern and a square guard in the other.

References

• Wikipedia, Checkmate pattern - definition and naming history of Anastasia's mate. https://en.wikipedia.org/wiki/Checkmate_pattern
• Internet Archive, Heinse, Anastasia und das Schachspiel (1803) - the original source. https://archive.org/details/anastasiaunddas1v2hein
• Statistics produced by scripts/analyze-theme-stats.mjs --theme anastasiaMate; the run is recorded in docs/data/anastasiaMate-stats.md.

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