Issue: #101 MJ
When Sporadik, a famed Russian chess player, dies from a sudden heart attack, the Avengers suspect foul-play. Featuring Thor in his alter-ego guise of Dr. Donald Blake!A Russian chess game gone wrong, Leonard Tippit gains fantastic powers. Throw in the Watcher and you have one heck of a story.
Creators: John Costanza, Stan Lee, Dan Adkins, Roy Thomas, Rich Buckler, Harlan Ellison
Characters: Hawkeye, Captain America, Iron Man, Thor, Scarlet Witch, Quicksilver, Vision, Watcher, Leonard Tippit