The story goes that Elias Thorne, a retired Grandmaster known for his erratic "hyper-modern" play, discovered the bot during a bout of insomnia. He expected a typical tactical brute. Instead, Horvig played like a ghost. It would sacrifice its Queen for a single tempo, or move its King into the center of the board in the opening—moves that engines usually flag as blunders—only to reveal a forced checkmate thirty moves later.
: Click on the bottom-right corner of the chess board and hold for one second. chess bot horvig 7z