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.

WRS (Widmer Rail Services AG) Re 4/4 II puzzle, based on an original photo by Reinhard Reiss (photo copyright Reinhard Reiss -- used with permission). Photographed at Mühlhausen-Ehingen, Germany, April 25, 2018. Click here for more information about this photograph