A swift-moving page turner of a thriller. Set in St Petersburg in March 1914 it is a rich mixture, expertly stirred, of psychoanalysis, of chess games, and of the political scene (the antisemitic Black Hundred, the Okhrana, the oppressed Poles in general and Polish Jews in particular, the Social Revolutionaries, Bolsheviks and Anarchists, the looming war with Germany); of different members of the security services playing different games; of murders; of blackmail; of the love of fathers for daughters who do not confide in them; of a steamy and very explicit sex-scene. The main dénouement, some way from the end, is very ingenious and makes sense of one aspect that had struck me as unlikely until that point. But, typical for this kind of novel, there are more twists and turns in the remaining pages, just to show how inventive the author can be, though they involve more leisurely discussions at moments of intense crisis than one would have thought the characters would have found time for.
The Zugzwang of the title refers to position in chess in which a player is forced to make a move he does not want to make, and of course this is the position in which several of the characters - and even Tsarist Russia - find themselves.