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| Credit: Wikimedia photo by Lothar Spurzem licensed under Creative Commons   To view the original image and license: https://commons.wikimedia.org/wiki/File:Koblenz,_Vier_T%C3%BCrme,_Markstra%C3%9Fe_1_-_Detail_(2021-06-14_Sp).JPG   The older Java version of this picture puzzle is available if needed. | 
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| Click for Puzzle Instructions | 
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