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.

Union Pacific GP15-1 puzzle, based on an original photo by Patrick McGee (photo copyright Patrick McGee -- used with permission). Photographed at Tulsa, Oklahoma, May 7, 2019. Click here for more information about this photograph