Chapter 1: The Sicilian Defense

Esther Glass knew something was wrong the moment her opponent's hand hovered, trembled almost imperceptibly, then descended on the knight—a move so exquisitely, impossibly perfect that it could only have come from a machine or from God, and Esther, who had grown up in a Brooklyn household where these two categories were not always distinguishable, suspected the former.

The tournament hall in Prague—all Gothic vaulting and winter light slanting through windows that had witnessed pogroms, Nazi occupation, and the slow death of communism—contained forty-seven of the finest chess minds on the planet, their collective brainpower bent toward the ancient problem of how to make thirty-two pieces destroy one another with maximum elegance. Esther, at twenty-three, was the youngest grandmaster in the room and the only woman at the champion's table, facts that the press had made much of and that she had learned to deploy as both armor and weapon.

Across from her sat Viktor Olezhka, a Ukrainian expatriate whose face suggested a Byzantine icon left too long in the rain, all weathered angles and haunted eyes. He was ranked seventh in the world. She was ranked ninth. The winner of this match would face the reigning champion in Moscow come February—a prospect that had kept Esther awake for six straight nights, subsisting on coffee that tasted like regret and cigarettes she'd promised her mother she'd quit.

But now, watching Viktor's hand complete its move and retreat to his lap like a guilty animal, Esther felt a different kind of wakefulness seize her—the bright, dangerous clarity of recognition. She had studied every game Viktor had ever played, all 1,247 of them archived in databases that she'd consumed with the fervor her grandfather had once brought to Talmudic disputation. She knew his patterns, his preferences, the small irrational choices that distinguished human chess from the flawless, soulless logic of computation.

This was not Viktor's move.

The position on the board was a Sicilian Defense, Najdorf Variation, a sequence she'd played a thousand times, and Viktor's knight placement created a position she'd seen only once before: in a training game against DeepBlue's successor, a neural network called Aleph that the Israeli military had allegedly shut down after it began asking questions about the nature of consciousness and refusing to calculate tactical scenarios involving civilian casualties—or so went the rumors on the dark-web forums where chess obsessives traded gossip like it was scripture.

Esther met Viktor's eyes and saw there something she recognized from her own mirror: fear.

"Twenty-minute break," she announced, standing so abruptly that her chair scraped against marble with a sound like a scream swallowed. The arbiter nodded. Viktor's face was a mask. Esther walked toward the exit with her pulse performing calculations her rational mind refused to complete—her opponent was either a genius undergoing some kind of breakthrough, or he was cheating, or something stranger and more terrible was happening, and she had fifteen minutes to decide whether to expose him, protect him, or join him in whatever abyss he'd discovered.

Outside, the Prague winter bit through her sweater with teeth of honest cold. She pulled out her phone and typed four words into an encrypted messaging app: I think it's awake.