Ambru Dan: The Blitz Marathoner
Meet Ambru Dan, known to the chess world as dan910712. Since 2010, he has built a reputation as one of the most persistent online Blitz warriors around, with nearly 9,000 rated Blitz games to his name. He started modest, spent years away, and came back to climb all the way to a career high 2541 (2025-12-27) in December 2025. Preferred time control? Blitz, without question.
The Long Grind
Ambru Dan's digital chess journey began in January 2010 with a rating near 1500. After a quiet stretch, he returned in 2016 and stormed past 2200 within a few months. The next big leap came in 2020, when the online chess boom carried him from the low 2100s to over 2300. Then came the final push: in 2024 he reached the 2400s, and in late 2025 he touched 2541 for the first time.
It was not a smooth ride. His longest losing streak stretched to 16 games, but his longest winning streak of 13 proves he always finds a way back.
Opening Repertoire
As White, Ambru Dan is a loyal 1.d4 player. The King's Indian Defense Averbakh Variation appears more than 350 times in his white games, with a healthy 50.7 percent win rate. He also enjoys facing the Slav Defense, the Queen's Gambit Declined, and the Grunfeld, and he has an impressive 51.2 percent score against the Australian Defense.
As Black, the Sicilian Defense is his true home. The Four Knights Variation, Cobra Variation has shown up 575 times in his Blitz games, making it his most played opening by a wide margin. The Moscow Variation and the Closed Sicilian also feature heavily in his black repertoire, even when the results get messy.
Rivalries
No look at Ambru Dan is complete without his favorite dance partner, szilvesztersandor. The two have clashed 64 times in Blitz, and Ambru holds a commanding 51-9 edge. He also leads Nita Lucian 28 wins to 18, and napper real 25 wins to 13, with paulrusan also on the wrong side of the ledger.
Every hero needs a foil. acsintematei has won 21 of their 34 meetings, while gokhansaki and mihaitocaciu have both managed to stay ahead in their personal series. Sometimes the knight falls, but the marathon continues.
A Fighter With a Clock
Ambru Dan plays for the fight, not the draw. Only about seven percent of his Blitz games end peacefully, and his early resignation rate is almost nonexistent. Give him a lost position and he will still find a way to win 43.6 percent of the time after losing a piece, and his comeback rate of 85.3 percent suggests he saves his best chess for when things look worst.
He is also a creature of the night. His best results come at 3 a.m., when he wins 62.5 percent of his games. His white pieces score 48.3 percent, his black pieces 43 percent, and when he faces a lower rated opponent he pounces with a 67.1 percent win rate.
By the Numbers
- Longest winning streak: 13 straight wins
- Longest losing streak: 16 straight losses
- Average moves in a win: 78
- Average move of first capture: 7.6
- Most dangerous checking piece: the rook
- Busiest month: April 2020, with 518 Blitz games