Thor Annual (1966) #9
The usually brawny Thor must exercise intellect and restraint when Umar manipulates him into playing a game of chess with Dormammu! Should either side win, Asgard will be plunged into hellfire!
Published: 1/1/1981
- Janice Chiang, letterer
- Jim Novak, letterer
- Chris Claremont, writer
- Vince Colletta, inker
- Luke Mcdonnell, penciler
- Al Milgrom, penciler (cover)