A top ten world chess player, George H. Mackenzie (1837-1891) dominated in the U. S. for more than a quarter century. Scottish by birth, Mackenzie was adopted by American chess players as their representative on the national and international scenes and was beloved as an entertainer wherever he toured. Despite his overwhelming record and global renown, no full-length biography or comprehensive collection of his games has appeared until now. This book details his tragic family life, his British and American war records, relations with the New York, national and international chess communities and his unfortunate and questionable death.