Checkmate Patterns — Anastasia vs Arabian?

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Avatar of JPSterling
I’m having trouble distinguishing the difference between the Anastasia & Arabian checkmates. What is the definition difference?
Avatar of Alramech

Anastasia's mate is when a rook (or queen) delivers the checkmate down a rank or file while the knight covers the escape squares.  With Arabian mate, a rook delivers the checkmate, the knight is two diagonal squares away from the king, and knight protects the rook.

Anastasia's Mate basic example.

 

Arabian Mate basic example.

 

Avatar of JPSterling

Perfect explanation.  thank you!