"A sprawling, multi-faceted epic... The solution to the mystery is deceptively simple, and yet I can honestly say I have never read one quite like it anywhere else. This book is an unmissable triumph."
–Publishers Weekly "If you like your crime stories to be bloody and bizarre, then this one may be for you. The winner of several major awards... the solution is one of the most original that I've ever read."
–Daily Mail "The great Soji Shimada virtually invented the "logic problem" sub-genre.:
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Guardian Top 10 Locked Room Mysteries (No. 2) "Intricately constructed and entertainingly exotic."
–The Japan Times