Rook checks, knight defends and covers the king's escapes
A rook delivers check on a file or rank next to the king, with a knight defending the rook and simultaneously covering the king's diagonal flight squares. Named after Vladimir Vukovic, whose 1965 book 'The Art of Attack in Chess' catalogued the pattern. Closely related to the Arabian mate, but with the rook one rank or file closer to the king.
Rook to c7. Mate. The rook checks the king on c8 along the c-file. White's knight on c6 defends the rook so the king cannot capture. The king cannot escape: b7 and d7 are both covered by the knight, and b8 and d8 are covered by the rook.
3 more clean runs (at any point) to reach Recall.
White to move. Black king has fled to c8 with a rook on a8 and knight on b6. White has a knight on c6 and a rook on e7 ready to swing over.
3 more clean runs (at any point) to reach Recall.