Bourbon Penn #38, April 2026
Set during the Cold War, “Atomic Chess” weaves together two parallel narratives — one aboard a Soviet nuclear submarine, the other in a Havana café — to explore the strange territory where physics, espionage, and something approaching the supernatural converge. The story’s central metaphor is chess as a model of atomic reality: pieces as particles, moves as transmutations, the board as the universe itself rendered legible and manipulable.
Aboard the K-251 Arkhangelsk, a Soviet Navaga-class ballistic missile submarine hovering at depth beneath the Arctic ice, an unnamed physicist conducts secret research in a missile compartment repurposed as a nuclear laboratory. His mission, known only to him and the captain, is to search for stable transuranic elements beyond atomic number 94 by irradiating samples in the submarine’s reactor. His unlikely collaborator is the ship’s machinist, who crafts increasingly precise detection equipment and, ultimately, a chess set made from materials of varying radioactive properties — lead, graphite, uranium, rhodium, beryllium. Their games are not merely recreation. Each piece is a neutron source, absorber, or reflector, and each move shifts criticality levels across the board. The machinist believes he has detected a new particle, something between a neutrino and a neutron, originating from outside the solar system. The physicist resists this interpretation, dismissing it as fantasy even as a nosebleed betrays his exposure. When the machinist achieves a smother mate, the resulting chain reaction dissolves the physicist to a skeleton. The machinist takes the keys from the physicist’s neck, walks to the reactor room, and vanishes.
In Havana, Cold War intelligence operative Maxwell Laplace has been surveilling a walk-in contact named Uri Shakhski — a man with no apparent ideology or financial motive. When they finally meet in a café, Shakhski proposes that they talk over a game of chess. As play proceeds, the two find themselves slipping into a language that is neither Russian nor any recognizable tongue — a cipher embedded in the moves themselves, unintelligible to wiretaps. Shakhski reveals that the Arkhangelsk was not merely conducting nuclear research but had inadvertently been building a tabletop reactor configured as a chess game, its pieces transmuting under neutron flux with each move. He claims to be a prophet of an incoming “rainstorm” of exotic radiation from the direction of Sagittarius, and that he intends to harden the world’s reactors against whatever force — divine or alien — is approaching. A napkin he passes Maxwell turns out to be a complete predicted scorecard of their entire game, written before it began.
After the game concludes, Maxwell’s body begins to glow and transform. He can no longer speak in ordinary language, trapped in the deep grammar of physics. When Shakhski tips over his king in resignation, Maxwell dies. Agency analysts later reconstruct the café game and confirm that the chess pieces, correctly arranged, formed a functional nuclear reactor capable of transmuting its own components into a new transuranic element. The decay products of this element emit particles that can kill fission reactions entirely — a God particle weaponizable at planetary scale. Whether Shakhski was a Soviet defector, a rogue physicist, or something else entirely is left unresolved. The story closes with the machinist stepping into the reactor core and vanishing; Shakhski walking into sunlight and vanishing; and the agency left holding rules to a game they still do not know how to win.
Josh Pearce has published more than 200 stories, reviews, and poems in a wide variety of magazines, including Analog, Asimov’s, Beneath Ceaseless Skies, Bourbon Penn, Cast of Wonders, Clarkesworld, Diabolical Plots, Kaleidotrope, Locus, Strange Horizons, On Spec,Weird Horror, and elsewhere. Find more of his writing at fictionaljosh.com.