Gennadij Timoscenko (born October 15, 1949 in Kyiv, Ukraine) is a Slovak chess Grandmaster and international FIDE trainer. He achieved his Grandmaster title in 1980. During his decades-long career, Timoshchenko has competed in numerous international tournaments such as the Baguio Zonal Tournament in 1976, the Lugano Interzonal Tournament in 1976, and the Moscow Interzonal Tournament in 1982. He finished in the top three of the German Chess Championship seven times, and second in the Ukrainian Championship in 1973.
Timochenko settled in Bratislava, Slovakia, where he has trained many young players as a coach. He was awarded the FIDE Trainer title in 2005 and became an Honored Trainer of the Slovak Republic in 2007. Additionally, in 2007, he won the Karl’s Prize for his contribution to chess in Slovakia.
M. Broz, E. Mazuch, J. Benes, J. Michalek, and A. Stratil were guided by Timoshenko in the European Youth Chess Championship 2012 and World Youth Chess Championship 2013. Timoshchenko’s strong belief in the ability of children to excel in chess led him to create the Chess School of GM Gennadij Timoshchenko in 2006. This school is located in Bratislava, along with other educational institutions.
Timoshchenko is also known for his work in chess theory. He has authored several publications, including "Vector evaluate in chess" which was published in 2012, and "My system in chess", released in 2015.