Josman Efendi

Josman Efendi: The Chessboard Biologist

Meet Josman Efendi, a player whose chess moves are as cunning as a predator in the wild and whose strategies evolve like DNA strands in a petri dish. Known in the chess ecosystem as Sparx79, Josman’s rating has blossomed to a solid rapid peak of 801 in 2025, showing a stunning ability to adapt and multiply his wins on the board.

Josman’s approach is a fascinating mix of patience and precision – with an average of nearly 62 moves per win, he thrives deep into the endgame, where the real biological drama unfolds. His endgame frequency of 58.39% suggests he’s comfortable in the critical survival zones, like a queen bee fiercely defending her hive.

The openings Josman favors are a veritable genome of chess culture: from the classic King's Pawn to the crafty Scandinavian Defense and Caro-Kann Defense, he maintains win rates around or above 50%, proving that his opening repertoire is well-adapted for survival. The Scandinavian and Three Knights Opening, with win rates over 55% in rapid games, highlight his evolved tactical instincts.

His blitz battles, though less rated, showcase a fast-paced neural response with a max rating close to 400. With a comeback rate of 74.57% and a perfect win rate after losing a piece, Josman refuses to be preyed upon by early setbacks — a true apex predator on the board!

Yet, like any biological organism, Josman sometimes experiences “tilt,” with a modest tilt factor of 12%, but generally keeps a cool cellular environment with a low early resignation rate of 3.3%.

Josman Efendi’s daily life on the chessboard is a curious interplay of biology and strategy: he plays strongest around midday (60.67% win rate at 13:00) when his neurons are firing on all cylinders and enjoys a slight edge when playing black (49.7% win rate) versus white (48.15%). His overall win/loss record in rapid games (544 wins against 520 losses) shows just how finely balanced and competitive his ecosystem is.

Off the board, his most common opponents include the likes of jhon_wesley and yuleopratama, reminding us that in this sprawling chess biosphere, every opponent plays a role in the survival of the fittest.

In the grand arboretum of chess players, Josman Efendi is a resilient specimen – evolving, adapting, and checkmating his way through the rugged cellular maze of the chessboard.