Three Player Chess (1971)

Chess for three players on a hexagonal board. Includes a standard chess board as well. Designer may be Robert Zubrin, as he is listed on the box and rules as the copyright holder.

Edit: I talked to Robert Zubrin at the 2011 Mars Society conference and he mentioned that he designed a chess variant for three people. He should be listed at the designer.

Microbadges

Black / White / Colors:
Black Rook Player
White Rook Player
Dark Horse Fan
Chess Knight / Gotta love those horses

no background:
Chess Fan - The Pawn
Chess Fan - The Bishop
Chess Fan - The Queen
I am a King at Chess
Chess Fan - The Rook
Chess Fan - the Knight

with white background:
Chess Player
Chess Player
Chess Player
Chess Player
Chess Player
Chess Player

other chess badges:
Knightmare Chess Fan
Chess Variant Fan
Chessex Fan
Chess collector