M Winther wrote on Sat, Apr 21, 2012 05:18 AM UTC:
I-Ching Chess ("I-ching Xadrez", Mario Sanchez, 1978). This book is
mentioned in The Encyclopedia of Chess Variants. It is a divinatory chess
variant. The I Ching has 64 hexagram and the chess board has 64 squares.
However, I cannot find this book anywhere on the Internet, not even in
Abebooks. If somebody knows how this system worked, please write an article
here on Chess Variant Pages.
/Mats