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.

Citicorp Railmark Incorporated (CREX) ES44AC puzzle, based on an original photo by Frank Orona (photo copyright Frank Orona -- used with permission). Photographed at Sedalia, Colorado, September 22, 2018. Click here for more information about this photograph