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.

OeBB Oensingen-Balsthal-Bahn RBe 2/4 puzzle, based on an original photo by Richard Behrbohm (photo copyright Richard Behrbohm -- used with permission). Photographed at Jestetten, Germany, September 15, 2017. Click here for more information about this photograph