A Sword for Kregen(1979)
(Book 20 in the Dray Prescot series)
A novel by Alan Burt Akers (Kenneth Bulmer)
The most popular game among the many peoples of Kregen, world of Antares, is one that resembles chess, called Jikaida. Jikaida is a battle of wits and war game pieces that suited well the tension charged atmosphere that enveloped Dray Prescot. For reconquering Vallia was assuming the aspect of such a game - move versus countermove, horde against horde! Then Dray Prescot found himself no longer in control of just a game - he had become a living chessman on a real-life board at the dreaded arena of Jikaida City. There every move was accompanied by bloodshed and behind every game might hang the fate of a city, an island, or even a nation!
Used availability for Kenneth Bulmer's A Sword for Kregen
August 1979 : USA Mass Market Paperback
June 2007 : USA, Canada, UK Kindle edition