The author has used - as in some of his other stories like "The problem of Morley's Emission" - a story format to lay out some of his philosophical speculations, in this instance about the nature of spacetime. The first person narrator, under opium-induced haze, is visited upon by a knight on a chess board. Evidently, it has arrived in a space-ship from a "locational-transitional" space. The ensuing conversation ranges over a few theories the author has about other types of possible spaces of existence. Einstein's field equation of General Relativity makes an appearance in tensor form. There is a minor discussion about the abstraction of numbers and a cursory paragraph about Cantor, transfinite numbers and transfinite spaces. Finally, the knight leaves and the opium wears off. A fairly nicely written fantasy piece, though at places it feels quite hurried or not sufficiently fleshed out.