Checkmate by Mark Dewar
My rating: 4 of 5 stars

Cordoba 948 A.D. After a chess match, Aiden, a Christian professor of mathematics is found murdered.
The Caliph's Jewish Vizier, Hasdai ben Shaprut investigates with the help of General Ghalib, commander of the Personal Guard.
An enjoyable historical mystery, a good start to the series.

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