Podcast in English
Text size
Bulgarian National Radio © 2025 All Rights Reserved

Kaloyan Geshev becomes world champion in mental calculation for the 4th time

Kaloyan Geshev
Photo: ruo-sofia-grad.com

Eighth-grader Kaloyan Geshev from the 125th Secondary School Boyan Penev in Sofia won his 4th world title in mental calculation thanks to his speed, accuracy and incredible concentration. The 2025 Mental Calculations World Championships Final took place online on April 13. Finalists from Serbia, Bulgaria, India and Italy competed in one of the highest levels of intellectual competition, said the Regional Department of Education- Sofia.

The Bulgarian News Agency (BTA) recalls that in November 2024, Kaloyan Geshev also achieved success at the Memoriad World Mental Olympics in the United Arab Emirates. Kaloyan Geshev won three medals in the competition, which featured over 150 participants from different countries. In September 2024, he also became the world vice-champion in mental speed calculation in one of the most difficult disciplines – inexact square roots.



Последвайте ни и в Google News Showcase, за да научите най-важното от деня!
Listen to the daily news from Bulgaria presented in "Bulgaria Today" podcast, available in Spotify.

More from category

The weather remains mostly cloudy and rainy, but with no precipitation in the southwestern regions

On Friday , the lowest temperatures will be between 5 and 10°C; in Sofia - it will be around 6°C. During the day it will be cloudy and with precipitation. In Northwestern Bulgaria the amounts will be significant. Almost no..

published on 11/6/25 7:50 PM
Iliana Iotova

Iliana Iotova: No one has reassured Bulgarians that there will be no fuel problems

''I am not surprised that the president’s veto concerning the sale of Lukoil’s assets was overturned, because even on such a delicate, serious and worrying issue, there were no arguments or discussion'', Vice President Iliana Iotova told journalists..

published on 11/6/25 5:54 PM
A press conference of the Bulgarian Association of Sterility and Reproductive Health

Birth rate in Bulgaria has decreased by 33% since 1994

Birth rate in Bulgaria has decreased by 33% over the past three decades. In 1994, 79,442 live births were registered in the country, while in 2024 the number dropped to 53,428. 6.5% of Bulgarian children are now born through in vitro fertilization..

published on 11/6/25 5:15 PM