
Isfahan, 1611. The Shah is away at war, and his palace on the great square is full of envoys, merchants and relatives who must wait out the winter until he returns. Night after night, one of them dies. Darugha Farhad, chief of the city watch, has been left to keep order. This time, the killer may not have worked alone.
Same rules as every Murder Mate: one white piece gives mate, the witnesses tell you which. In Isfahan, the killer may have had help.
On the last move, the piece that moves is the piece that gives check. That piece is the killer.
Sometimes another guest moved first: one move, any legal move, then never again. Black answers, and the killer finishes alone. In a mate in one, the accomplice simply steps out of the line, and the killer mates without moving.
15 of the 40 cases have an accomplice. The others were done alone, but every pair is a possible plan, and the witnesses must rule them all out.
Every square of the board belongs to a room of the palace. Every white piece is a guest, always the same piece from one case to the next. You are the white king, and you never move.


You only need to know how the pieces move. Each book stands alone: you can start the series here.
Mate in one. Sometimes the killer never moves: someone steps out of his way.
Cases 01-08 · 5-10 minMate in two. One suspect alone, or an accomplice and a killer.
Cases 09-20 · 15-25 minMore pairs to rule out, and one witness is lying.
Cases 21-33 · 25-30 minMate in three. One liar. Any two guests could have held the door.
Cases 34-40 · 30-45 min







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