A 13-year-old Japanese girl has become the youngest-ever professional title holder in the strategic board game "Go."

Nakamura Sumire won the female Kisei title on Monday at 13 years and 11 months. The former record of 15 years and nine months was set by double-title holder Fujisawa Rina in 2014.

The third-dan-ranked Nakamura faced double-title holder Ueno Asami, aged 21, in their third match of the best-of-three Kisei title series at the Nihon Ki-in in Tokyo.

Nakamura played calmly and took a commanding lead from the middle stages.

After the match, Nakamura told reporters that although there were some areas where she could have done better, it was good for her to be able to win with a fighting mindset. She said she realized hard work can produce a good result.

Ueno said Nakamura showed strength at critical moments.

Nakamura started playing Go when she was 3 years old under the tutelage of her father Shinya, a ninth-dan-ranked professional Go player.

At age 7, she started visiting South Korea, a powerhouse of the game, for training from time to time. She became the youngest professional Go player at the age of 10.