To maximize your puzzling space, click on the Maximize button in the lower right corner of the puzzle screen for fullscreen mode. Click on it again to return to normal mode.

For more tips, see the Online Puzzle Tips page.

Russian Railroad EP3D puzzle, based on an original photo by Alexandr Zaleskiy (photo copyright Alexandr Zaleskiy -- used with permission). Photographed at Nizhniy Novgorod, Russia, September 15, 2019. Click here for more information about this photograph