What kind of snakes are in this photo?
Based on the species description in Speybroeck et al. 2016 and pattern of stripes (one central stripe with stripes on each side), and the lack of a distinct neck, the specimen in the top left appears to be an Eastern slow worm (Anguis colchica). That species is known to occur in Tbilisi.
Based on the species description in Speybroeck et al. 2016 a smooth snake (Coronella austriaca), also known from Tbilisi. The reddish color, two rows of dark spots, and the markings on the head are typical of this species. Also it can be seen that the anal scales are divided, which is a characteristic of this species. 
Cited
Speybroeck et al. 2016. Field Guide to the Amphibians and Reptiles of Britain and Europe. Bloomsbury Natural History (publ).