The scenery follows Ingmar Berman’s The 7th Seal. The first two panels as well as the chess game are optically copied from the movie. The knight, of course, looks quite similar to Max von Sydow.
The plot: Death appears to the knight on the beach in order to take him, and since he doesn’t want to die, the knight persuades Death to play a game of chess with him, his life at stake. So far so good. In the movie, thus, the game endures throughout days, until Death finally wins.
It is my own belief that Bergman allowed himself to interprete the facts in his own artistical way. In reality, it happened just the way you saw in the cartoon, of course!