Meet Buddy JKA
Buddy JKA, also known as jkaRUSSIA, is an online chess marathoner. Across more than 10,000 analyzed games, Buddy has built a reputation as a player who wins with white, survives with black, and always shows up for the next round. The platform says the preferred time control is Rapid, and Buddy's record there is almost absurd.
A Rapid Force
In Rapid, Buddy's style is a mix of patience and punishment. The stats are stunning: 66 wins, 7 losses, and a nearly perfect January 2024 run of 19 wins and one draw. That consistency lifted the profile to 2490 (2025-12-28). For good measure, Buddy also touched 2824 (2026-03-04) in Blitz and 2901 (2026-02-19) in Bullet, so this is not a one-trick pony.
The Opening Menu
Buddy is a proud 1.d4 grinder. The Caro-Kann Defense is a constant companion with the black pieces, backed by hundreds of games and a healthy win rate. On the white side, the London System appears in a sharp Poisoned Pawn flavor, while the Australian Defense has quietly become an unexpected scoring weapon in faster games.
A Rivalry for the Ages
No biography of Buddy JKA is complete without David Zhurbinsky. The two have faced each other 137 times, with Buddy taking 63 wins and cm_rui answering with 68. It is a rivalry with enough twists to fill a telenovela, and it probably explains a large slice of Buddy's marathon volume. Expect more chapters ahead.
Quirks of a Grinder
Buddy plays best at 08:00, converts comebacks at an insane 89.51%, and wins after losing a piece 44.79% of the time. The longest winning streak was 24 games, and the longest losing streak was 12, which means Buddy's resilience is as real as the queen checks he loves to deliver. Endgames appear in 84.61% of his games, and he avoids early resignation like a plague.
- Endgame frequency: 84.61%
- Comeback rate: 89.51%
- Win rate after losing a piece: 44.79%
- Longest winning streak: 24