The novel follows Aleksandr Ivanovich Luzhin, a Russian chess prodigy whose obsessive genius for the game gradually consumes his grip on reality. Set within the Russian émigré community in early 20th-century Europe, the story traces Luzhin's life from a troubled childhood through his rise as a grandmaster to his psychological disintegration and death.
The narrative opens in pre-revolutionary Russia. Luzhin's father, a writer of adventure books for boys, tells his young son that he will soon attend school and be addressed by his surname, as adults are. The parents have spent the summer dreading a tantrum, but the boy absorbs the news with unsettling calm. On the day the family moves from the country estate to St. Petersburg, the boy bolts from the train station and hides in the attic of the empty manor house. A search party retrieves him.
At school, Luzhin is miserable. Classmates torment him with the nickname "Tony," taken from his father's fictional hero, and he spends every recess alone on a woodpile in the schoolyard. He finds solace in solitary intellectual pastimes that offer precise, harmonious patterns: recreational mathematics, jigsaw puzzles, and magic tricks. Each prefigures his attraction to the formal beauty of chess.
The discovery of chess comes during a musical evening at the family apartment, when young Luzhin hides in his father's study and encounters a violinist who opens a box of chessmen, calling chess a game with combinations "like melodies." The next day, Luzhin persuades his aunt, a warm young woman and his only comfortable companion, to teach him the basic moves. His father interrupts the lesson angrily, and the aunt never visits again, but the boy keeps the chess set.
Luzhin begins skipping school to visit his aunt's apartment, where an elderly gentleman becomes his true chess teacher. Luzhin progresses with astonishing speed, learns chess notation, and discovers he can replay recorded games purely in his mind. His truancy is eventually discovered, but his father's confrontation leads nowhere.
During the summer at the country estate, Luzhin secretly studies chess problems. When his father discovers his son can play, the boy defeats him four games in a row. The country doctor, a stronger player, begins visiting nightly and loses consistently. Luzhin senior is torn between pride and dread at what he calls his son's "sacred rite." Back in St. Petersburg, Luzhin defeats a teacher at a school social and his photograph appears in a magazine. He refuses to return to school, runs away from home, falls gravely ill, and upon recovery is taken abroad to a German resort. The narrative then leaps forward 16 years: Luzhin, now a heavy, prematurely aged man in his early thirties, sits at the same resort, speaking to an unseen companion.
The perspective shifts to Luzhin senior's later years as an elderly émigré writer in Berlin. He plans a sentimental novella about a chess-playing boy but dies in Berlin before finishing it. A key figure is introduced in retrospect: Valentinov, a charismatic, exploitative man who served as young Luzhin's combined tutor and manager. Valentinov treated the boy as a profitable novelty, controlling his diet, habits, and isolation, then abandoned him once the child prodigy's appeal faded. Luzhin's mother died while they were abroad. The adult Luzhin's chess career is marked by early brilliance followed by a long plateau. Though ranked among the world's top grandmasters, he has been unable to recapture his youthful fire, and the Italian grandmaster Turati now represents his chief rival.
Luzhin's companion at the resort is revealed: A young Russian woman of 25, the unnamed daughter of a wealthy émigré businessman. She finds Luzhin strange and uncouth but deeply compelling, perceiving in him the aura of artistic genius. She possesses an instinctive compassion for helpless creatures, and Luzhin stirs this feeling intensely. After a comically botched attempt to show her a hotel wing, Luzhin abruptly departs for Berlin, then immediately returns, bursts into her room, declares she will be his wife, and collapses into tears. Her mother, arriving shortly after, is appalled by Luzhin's manners.
Despite the mother's fierce objections, the engagement proceeds. Luzhin departs for the Berlin tournament, his thoughts interweaving his chess defense against Turati with the joy of his fiancée's promise to follow him.
The tournament begins brilliantly. Luzhin plays with stunning clarity, winning game after game, but the boundary between chess and reality dissolves. He sees chess patterns in shadows, furniture arrangements, and everyday objects. His fiancée notices his deteriorating appearance and anxiously awaits the tournament's end.
The decisive match against Turati arrives. Turati does not play his famous opening, rendering Luzhin's prepared defense useless. The game builds into a magnificent, complex battle. Hours in, Luzhin burns his fingers on a forgotten match and glimpses the "full horror of the abysmal depths of chess." The game is adjourned with no clear advantage. Afterward, Luzhin cannot emerge from the chess world. He wanders into the Berlin night in a fugue state, believing he is searching for his childhood country manor, and collapses unconscious on a sidewalk.
Two drunk young Germans find him and, using an address on a postcard in his pocket, deliver him by taxi to his fiancée's family apartment. He is taken to a sanatorium. The fiancée's parents plead with her to abandon the engagement, but she refuses. The psychiatrist confirms that Luzhin's condition results from prolonged strain and that chess must be permanently forbidden. At the sanatorium, the fiancée tells Luzhin she will stop loving him if he thinks about chess. Luzhin slowly recovers by revisiting his pre-chess childhood memories, finding unexpected sweetness in recollections he had previously avoided. Her parents reluctantly accept the engagement.
Luzhin is fitted for new suits and outwardly renovated. A civil wedding takes place, followed by a church ceremony. On their wedding night, Luzhin falls asleep before his wife finishes her bath. Mrs. Luzhin devotes herself to filling her husband's days with harmless diversions: an atlas, a typewriter, museum visits, the cinema, and drawing. Yet at unavoidable moments of solitude, Luzhin senses blank spots in his new life.
At a Russian charity ball, Luzhin meets Petrishchev, a former classmate who cheerfully reminisces about school and mentions chess. Luzhin flees in panic. In the following nights, he begins to sense that a chess-like combination is being played against him, that events from his childhood are being systematically replicated in his present life. A lady visiting from Soviet Russia inadvertently reinforces this perception by mentioning Luzhin's aunt, who taught "her little nephew" chess. Luzhin discovers a pocket chess set in his old jacket and sets out the position of his interrupted game with Turati, confirming to himself that the pattern is real.
Mrs. Luzhin subscribes to émigré newspapers and organizes intellectual gatherings, not realizing Luzhin secretly solves chess problems from the papers. Valentinov telephones the apartment; Mrs. Luzhin intercepts the call and blocks contact. Luzhin, meanwhile, conceives an "experimental defense" of random acts to break the pattern. On a Thursday afternoon, he slips away from his wife and finds Valentinov waiting outside with a limousine. Valentinov sweeps Luzhin to the offices of a film company, where the sound of Valentinov's voice triggers an overwhelming flood of chess memories. Luzhin grasps the key to the combination: The repetition is designed to draw him back to chess, which will destroy him. Valentinov pitches a film requiring Luzhin to appear in a staged tournament alongside Turati. Luzhin recognizes this as the culminating move.
Luzhin flees, returns to the apartment, and refuses to explain. He paces through the rooms, then stops by the phonograph and methodically empties his pockets, laying out his possessions as if divesting himself of worldly things. He approaches his wife, kisses both her hands, and says: "The only way out. I have to drop out of the game." The doorbell rings; in the confusion, Luzhin slips into the bathroom and locks the door.
He smashes the frosted-glass window with a chair. His wife and guests pound on the door. He hoists himself to the upper window frame and hangs by his hands from the ledge. Before letting go, he looks down and sees the dark courtyard resolve into an orderly pattern of dark and pale squares, a chessboard spread out by eternity. He releases his grip. The door is burst open. Voices cry out his full name, "Aleksandr Ivanovich," the only time it is spoken in the novel, but there is no Aleksandr Ivanovich.