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The Arabian mate

A rook and knight team up to trap a king in the corner. One of the oldest mating patterns there is.

Rook and knight in the corner

Black's king is in the corner. The knight on f6 guards h7 and g8. If the rook checks from h7, the knight protects it, so the king cannot take, and the rook itself covers g7. Every square is gone. The pattern is very old: it was already known in shatranj, the Arabic ancestor of chess.

Rook and knight in the corner abcdefgh12345678

Close the corner

Your turn

Checkmate in one move.

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Rook to h7 is mate. The knight protects the rook and covers g8, and the rook covers g7.

Close the corner abcdefgh12345678

Bring the knight with check

Your turn

Mate in two. The knight joins the attack with check first.

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Knight to f6 check leaves only h8, since Black's own bishop blocks f8 and your rook covers the seventh rank. Then rook to h7 is the Arabian mate.

Bring the knight with check abcdefgh12345678

Why the seventh rank?

Question

Why is a rook on the seventh rank so useful for this mate?

  • It can slide straight to h7, and it keeps the king off the seventh rank meanwhile
  • It protects the knight
  • Rooks are stronger on the seventh rank because they move further
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It can slide straight to h7, and it keeps the king off the seventh rank meanwhile

From the seventh rank the rook reaches h7 in one move and guards g7 the whole time.