Modern map of the center of Kaliningrad from OpenStreetMap in Russian, showing 8 bridges between the 2 sides of the river and 2 islands, in a solvable configuration (west island has 1 bridge north, 1 south, and one east, east "island" has 2 north, 1 west, and 3 south)
https://social-media.mildlyfunctional.gay/media_attachments/files/111/908/870/555/039/428/original/dd153987e60b3434.png