Jacob Courtemanche: The Chess Cell Whisperer
Meet Jacob Courtemanche, also known in the chess world by the username JackoLeCerveau, a player whose rating has evolved like a well-adapted organism navigating the complex ecosystem of the chessboard. With a rapid rating blossoming from 444 in 2022 to a peak of 858 in 2025, Jacob has proven he's not just playing chess, he's evolving through it.
Jacob’s playing style is a fascinating study in chess biology: a blend of endurance with an average of 55 moves per win, showing his preference for the long game, much like a patient predator stalking its prey. His endgame frequency stands high at 49.31%, revealing a knack for thriving in those critical survival moments. Despite an early resignation rate of nearly 14%, when he fights on, he’s as resilient as a chessboard mitochondrion powering through challenges.
His tactical awareness is something to marvel at—a comeback rate of 66.25%, along with an astounding 100% win rate after losing a piece, proving that even when parts of his chess "organism" are lost, the whole remains alive and kicking. His psychological resilience keeps the tilt factor modest at 9, a testament to a brain finely tuned for the mental rigors of competition.
Jacob favors the French Defense and its variations in rapid play, boasting win rates north of 58%, and demonstrates a cerebral affinity for Nimzowitsch and Alekhine’s Defense across different time controls. Playing with both White and Black, he maintains a nearly balanced win ratio, with a slight edge playing Black at 51.51%, perhaps thriving in the shadows like a nocturnal chess creature.
When it comes to opponents, Jacob has a mixed record—his nemesis list includes tough competitors like moongel18 and dondawidon, who’ve pulled off wins against him, but he also has a repertoire of victories against varied challengers, some with perfect win rates. It seems he knows how to adapt his game’s DNA to counter each rival.
Ratings fluctuate, but like a cell undergoing mitosis and mutation, Jacob’s ratings in rapid, blitz, and bullet chess have all seen steady growth, especially notable in rapid chess where he climbs toward grandmaster-level territory, peaking at 858 by 2025. He’s equally lively online at odd hours, showing peak winning probabilities during midday hours and a curious 100% win rate at 9 AM—proof that even chess organisms need their prime feeding time to perform best.
Above all, Jacob Courtemanche is a living, breathing chess experiment in resilience, adaptation, and strategic evolution. He continues to test the limits of his mental mitochondria on every board, proving once and for all that chess is much more than a game—it’s a biological marvel in motion.
