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.

Durango & Silverton Narrow Gauge Railroad DL535E puzzle, based on an original photo by Mike Stupar (photo copyright Mike Stupar -- used with permission). Photographed at Rockwell, Colorado, June 18, 2021. Click here for more information about this photograph