The Russia Tizen App Challenge was launched this year to mainly focus on Apps for the Samsung Z, but unfortunately as this handset hasn't launched, the scope of this challenge has had to change.
Now looking at the official T&C's the application target devices are now the Tizen Samsung Gear 2 and Gear 3 (which I'm sure should read Gear S). Everything else of the challenge remains the same in terms of schedules and requirements.
The competition has started on the 9th June and is open to citizens of the Russia or Ukraine, Azerbaijan, Armenia, Belarus, Kazakhstan, Kyrgyzstan, Moldova, Tajikistan, Turkmenistan and Uzbekistan with permanent or temporary registration in the territory of Russia.
That makes a total prize fund of over 7,000,000 rubles
For more information can be found at http://www.tizenappchallenge.ru