Yandex Money is one of the most popular payment methods in Russia and the Russian speaking countries. It is an e-wallet, owned by Yandex, known as the Russian Google, and Sberbank, one of the largest banks in Eastern Europe.
Russia and the countries from the former Soviet Union have a firm stance against online gambling, but it does not mean local players are out of options. Online casinos accepting Russian players usually allow them to make Yandex Money deposits. Of course, the legitimacy of these casinos, accepting players from a country where gambling is strictly prohibited, remains dubious. They usually hold an offshore license, and players cannot count on any protection if they fall a victim of a fraud. The most viable solution in such case is to deposit a small amount just to check how fast the casino would process a withdrawal and if you would end up with confiscated winnings for no apparent reason.