For years, Elon Musk's SpaceX and Jeff Bezos's Blue Origin have been fierce rivals over space travel as they architect the future of humanity. This clash of the titans is a battle of the minds, which in this case takes place on Mars - the current frontier.
There is deep symbolism in the chess position, which is from a well-known game played in 1911. In the game, white (played by Musk here) opened with the King's Gambit, a fitting name, followed by a risky but brilliant queen sacrifice. Black (played by Bezos) accepts the sacrifice, and ends up ahead in material but far behind in position. This style of play echoes Musk's daring "all or nothing" nature that has kept SpaceX at the forefront of the race.