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.

SBB RABe 511 puzzle, based on an original photo by Christian Waelti (photo copyright Christian Waelti -- used with permission). Photographed at Oberwinterthur, Switzerland, November 25, 2017. Click here for more information about this photograph